Service Manual, 4EOZ/3.5EFOZ (TP-6137)

Service Manual, 4EOZ/3.5EFOZ (TP-6137)
Service
Marine Generator Sets
(Includes Engine Maintenance)
Models:
4EOZ
3.5EFOZ
TP-6137 5/03
Product Identification Information
Product identification numbers determine service parts.
Record the product identification numbers in the spaces
below immediately after unpacking the products so that
the numbers are readily available for future reference.
Record field-installed kit numbers after installing the
kits.
Generator Set Identification Numbers
Record the product identification numbers from the
generator set nameplate(s).
Model Designation
Specification Number
Serial Number
Accessory Number
Accessory Description
Engine Identification
Record the product identification information from the
engine nameplate.
Manufacturer
Model Designation
Serial Number
x:in:007:001a
Table of Contents
Product Identification Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside front cover
Safety Precautions and Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i
Service Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i
Section 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Service Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1
1
2
3
4
Section 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Prestart Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Marine Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Angular Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Operation in European Union Member Countries . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Exercising the Generator Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Starting and Stopping Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.1
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.2
Starting the Generator Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.3
Stopping the Generator Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.4
Engine Safety Shutdown Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6.5
Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Remote Panel Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7.1
Remote Start/Stop Panel Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7.2
Remote Panel Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
5
5
5
5
6
6
6
7
7
7
8
8
8
8
Section 3 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Service Schedule—3.5EFOZ and 4EOZ Models . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1
Oil Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2
Oil Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.3
Oil Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Generator Storage Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1
Lubricating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.3
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.4
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.5
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
9
10
12
12
12
12
14
15
15
15
15
15
15
Section 4 Intake and Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Air Intake Silencer/Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Mixing Elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17
17
18
18
Section 5 Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Fuel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Fuel Injector Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 Excess Fuel Start Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.6 The Injection Pump’s Fuel Starting Delivery Point . . . . . . . . . . . . . . . . . . . . . . . . . .
5.7 Fuel Pump Adjustment Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
19
19
20
21
23
24
25
TP-6137 5/03
Table of Contents
5.8 Fuel Pump and Gear Cover Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.9 Bleeding the Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.10 Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Section 6 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Direct Water Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 Seawater Pump and Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Siphon Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5 Anticorrosion Zinc Anode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
31
32
32
33
35
Section 7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Section 8 Controller Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.1
On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.2
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.3
Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.4
On/Off Switch (Stop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Engine Safety Shutdown Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2.1
Low Oil Pressure (LOP) Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2.2
High Water Temperature and High Exhaust Temperature
Shutdown Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.3 Operation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41
42
42
42
42
42
43
43
Section 9 Generator Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Theory of Operation,
Brushless Generator Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3 Output Voltage and Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3.1
Voltage Rating and Rotation Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3.2
Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.4 Rotor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.5 Field Diode Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.6 Stator Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.7 Alternator Excitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51
51
Section 10 Generator and Engine Disassembly/Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.1 Generator Alternator Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.2 Generator Alternator Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.3 Generator Engine Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.4 Generator Engine Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.5 Engine Component Dimensions and Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
57
57
61
63
74
88
43
45
47
52
52
52
52
53
54
55
56
Section 11 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.1 Wiring Diagram, Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
11.2 Wiring Diagram, Point-to-Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Appendix A Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Appendix B Common Hardware Application Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-3
Appendix C General Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-4
Appendix D Common Hardware Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-5
Appendix E Common Hardware List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-6
Table of Contents
TP-6137 5/03
Safety Precautions and Instructions
IMPORTANT
SAFETY
INSTRUCTIONS. Electromechanical
equipment, including generator sets,
transfer switches, switchgear, and
accessories, can cause bodily harm
and pose life-threatening danger when
improperly installed, operated, or
maintained. To prevent accidents be
aware of potential dangers and act
safely. Read and follow all safety
precautions and instructions. SAVE
THESE INSTRUCTIONS.
This manual has several types of safety
precautions and instructions: Danger,
Warning, Caution, and Notice.
DANGER
Danger indicates the presence of a
hazard that will cause severe
personal injury, death, or substantial
property damage.
WARNING
Warning indicates the presence of a
hazard that can cause severe
personal injury, death, or substantial
property damage.
CAUTION
Caution indicates the presence of a
hazard that will or can cause minor
personal injury or property damage.
NOTICE
Accidental Starting
WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
Disabling
the
generator set.
Accidental starting can cause
severe injury or death.
Before
working on the generator set or
equipment connected to the set,
disable the generator set as follows:
(1) Press the generator set on/off
button to shut down the generator set.
All indicator lamps dim. (2) Disconnect
the power to the battery charger, if
equipped. (3) Remove the battery
cables, negative (--) lead first.
Reconnect the negative (--) lead last
when reconnecting the battery. Follow
these precautions to prevent the
starting of the generator set by the
remote start/stop switch.
Battery
WARNING
Notice communicates installation,
operation, or maintenance information
that is safety related but not hazard
related.
Safety decals affixed to the equipment
in prominent places alert the operator
or service technician to potential
hazards and explain how to act safely.
The decals are shown throughout this
publication to improve operator
recognition.
Replace missing or
damaged decals.
TP-6137 5/03
Sulfuric acid in batteries.
Can cause severe injury or death.
Wear protective goggles and
clothing. Battery acid may cause
blindness and burn skin.
Battery electrolyte is a diluted
sulfuric acid. Battery acid can cause
severe injury or death. Battery acid
can cause blindness and burn skin.
Always wear splashproof safety
goggles, rubber gloves, and boots
when servicing the battery. Do not
open a sealed battery or mutilate the
battery case. If battery acid splashes in
the eyes or on the skin, immediately
flush the affected area for 15 minutes
with large quantities of clean water.
Seek immediate medical aid in the case
of eye contact. Never add acid to a
battery after placing the battery in
service, as this may result in hazardous
spattering of battery acid.
Battery acid cleanup. Battery acid
can cause severe injury or death.
Battery acid is electrically conductive
and corrosive. Add 500 g (1 lb.) of
bicarbonate of soda (baking soda) to a
container with 4 L (1 gal.) of water and
mix the neutralizing solution. Pour the
neutralizing solution on the spilled
battery acid and continue to add the
neutralizing solution to the spilled
battery acid until all evidence of a
chemical reaction (foaming) has
ceased. Flush the resulting liquid with
water and dry the area.
Battery gases. Explosion can cause
severe injury or death. Battery gases
can cause an explosion. Do not smoke
or permit flames or sparks to occur near
a battery at any time, particularly when
it is charging. Do not dispose of a
battery in a fire. To prevent burns and
sparks that could cause an explosion,
avoid touching the battery terminals
with tools or other metal objects.
Remove all jewelry before servicing the
equipment. Discharge static electricity
from your body before touching
batteries by first touching a grounded
metal surface away from the battery. To
avoid sparks, do not disturb the battery
charger connections while the battery
is charging. Always turn the battery
charger off before disconnecting the
battery connections. Ventilate the
compartments containing batteries to
prevent accumulation of explosive
gases.
Safety Precautions and Instructions
I
Battery short circuits. Explosion
can cause severe injury or death.
Short circuits can cause bodily injury
and/or
equipment
damage.
Disconnect
the
battery
before
generator
set
installation
or
maintenance. Remove all jewelry
before servicing the equipment. Use
tools with insulated handles. Remove
the negative (--) lead first when
disconnecting the battery. Reconnect
the negative (--) lead last when
reconnecting the battery.
Never
connect the negative (--) battery cable
to the positive (+) connection terminal
of the starter solenoid. Do not test the
battery condition by shorting the
terminals together.
Combustible materials. A fire can
cause severe injury or death.
Generator set engine fuels and fuel
vapors are flammable and explosive.
Handle these materials carefully to
minimize the risk of fire or explosion.
Equip the compartment or nearby area
with a fully charged fire extinguisher.
Select a fire extinguisher rated ABC or
BC for electrical fires or as
recommended by the local fire code or
an authorized agency.
Train all
personnel
on
fire extinguisher
operation
and
fire
prevention
procedures.
Exhaust System
WARNING
Engine Backfire/Flash
Fire
WARNING
Fire.
Can cause severe injury or death.
Do not smoke or permit flames or
sparks near fuels or the fuel system.
Servicing the fuel system. A flash
fire can cause severe injury or death.
Do not smoke or permit flames or
sparks near the carburetor, fuel line,
fuel filter, fuel pump, or other potential
sources of spilled fuels or fuel vapors.
Catch fuels in an approved container
when removing the fuel line or
carburetor.
Servicing the air cleaner. A sudden
backfire can cause severe injury or
death. Do not operate the generator
set with the air cleaner/silencer
removed.
Combustible materials. A sudden
flash fire can cause severe injury or
death. Do not smoke or permit flames
or sparks near the fuel system. Keep
the compartment and the generator set
clean and free of debris to minimize the
risk of fire. Wipe up spilled fuels and
engine oil.
II
Safety Precautions and Instructions
Carbon monoxide.
Can cause severe
fainting, or death.
nausea,
The exhaust system must be
leakproof and routinely inspected.
Carbon
monoxide
symptoms.
Carbon monoxide can cause severe
nausea, fainting, or death. Carbon
monoxide is a poisonous gas present in
exhaust gases. Carbon monoxide
poisoning symptoms include but are
not limited to the following:
D Light-headedness, dizziness
D Physical fatigue, weakness in
joints and muscles
D Sleepiness, mental fatigue,
inability to concentrate
or speak clearly, blurred vision
D Stomachache, vomiting, nausea
If experiencing any of these symptoms
and carbon monoxide poisoning is
possible, seek fresh air immediately
and remain active. Do not sit, lie down,
or fall asleep. Alert others to the
possibility of carbon monoxide
poisoning. Seek medical attention if
the condition of affected persons does
not improve within minutes of breathing
fresh air.
Copper tubing exhaust systems.
Carbon monoxide can cause severe
nausea, fainting, or death. Do not
use copper tubing in diesel exhaust
systems. Sulfur in diesel exhaust
causes rapid deterioration of copper
tubing exhaust systems, resulting in
exhaust/water leakage.
Inspecting the exhaust system.
Carbon monoxide can cause severe
nausea, fainting, or death. For the
safety of the craft’s occupants, install a
carbon monoxide detector. Consult the
boat builder or dealer for approved
detector location and installation.
Inspect the detector before each
generator set use. In addition to routine
exhaust system inspection, test the
carbon monoxide detector per the
manufacturer’s instructions and keep
the detector operational at all times.
Operating the generator set. Carbon
monoxide can cause severe nausea,
fainting, or death. Carbon monoxide
is an odorless, colorless, tasteless,
nonirritating gas that can cause death if
inhaled for even a short time. Use the
following precautions when installing
and operating the generator set. Do not
install the exhaust outlet where exhaust
can be drawn in through portholes,
vents, or air conditioners.
If the
generator set exhaust discharge outlet
is near the waterline, water could enter
the exhaust discharge outlet and close
or restrict the flow of exhaust. Never
operate the generator set without a
functioning carbon monoxide detector.
Be especially careful if operating the
generator set when moored or
anchored under calm conditions
because gases may accumulate. If
operating the generator set dockside,
moor the craft so that the exhaust
discharges on the lee side (the side
sheltered from the wind). Always be
aware of others, making sure your
exhaust is directed away from other
boats and buildings. Avoid overloading
the craft.
TP-6137 5/03
Fuel System
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
The fuel system. Explosive fuel
vapors can cause severe injury or
death. Vaporized fuels are highly
explosive. Use extreme care when
handling and storing fuels. Store fuels
in a well-ventilated area away from
spark-producing equipment and out of
the reach of children. Never add fuel to
the tank while the engine is running
because spilled fuel may ignite on
contact with hot parts or from sparks.
Do not smoke or permit flames or
sparks to occur near sources of spilled
fuel or fuel vapors. Keep the fuel lines
and connections tight and in good
condition. Do not replace flexible fuel
lines with rigid lines. Use flexible
sections to avoid fuel line breakage
caused by vibration. Do not operate the
generator set in the presence of fuel
leaks, fuel accumulation, or sparks.
Repair fuel systems before resuming
generator set operation.
Draining the fuel system. Explosive
fuel vapors can cause severe injury
or death. Spilled fuel can cause an
explosion. Use a container to catch fuel
when draining the fuel system. Wipe up
spilled fuel after draining the system.
Installing the fuel system. Explosive
fuel vapors can cause severe injury
or death. Fuel leakage can cause an
explosion. Do not modify the tank or
the propulsion engine fuel system.
Equip the craft with a tank that allows
one of the two pickup arrangements
described in the installation section.
The tank and installation must conform
to USCG Regulations.
TP-6137 5/03
Pipe sealant. Explosive fuel vapors
can cause severe injury or death.
Fuel leakage can cause an explosion.
Use pipe sealant on all threaded fittings
to prevent fuel leakage. Use pipe
sealant that resists gasoline, grease,
lubrication oil, common bilge solvents,
salt deposits, and water.
Ignition-protected
equipment.
Explosive fuel vapors can cause
severe injury or death. Gasoline
vapors can cause an explosion.
USCG Regulation 33CFR183 requires
that all electrical devices (ship-to-shore
transfer switch, remote start panel,
etc.) must be ignition protected when
used in a gasoline and gaseous-fueled
environment. The electrical devices
listed above are not ignition protected
and are not certified to operate in a
gasoline
and
gaseous-fueled
environment such as an engine room or
near fuel tanks. Acceptable locations
are the wheelhouse and other living
areas sheltered from rain and water
splash.
Hazardous Noise
CAUTION
Hazardous noise.
Can cause hearing loss.
Never operate the generator set
without a muffler or with a faulty
exhaust system.
Engine noise. Hazardous noise can
cause hearing loss. Generator sets
not equipped with sound enclosures
can produce noise levels greater than
105 dBA. Prolonged exposure to noise
levels greater than 85 dBA can cause
permanent hearing loss. Wear hearing
protection when near an operating
generator set.
Hazardous Voltage/
Electrical Shock
WARNING
Hazardous voltage. Moving rotor.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Grounding electrical equipment.
Hazardous voltage can cause
severe injury or death. Electrocution
is possible whenever electricity is
present.
Open the main circuit
breakers of all power sources before
servicing the equipment. Configure the
installation to electrically ground the
generator set, transfer switch, and
related equipment and electrical
circuits to comply with applicable codes
and standards.
Never contact
electrical leads or appliances when
standing in water or on wet ground
because these conditions increase the
risk of electrocution.
Disconnecting the electrical load.
Hazardous voltage can cause
severe injury or death. Disconnect
the generator set from the load by
opening the line circuit breaker or by
disconnecting the generator set output
leads from the transfer switch and
heavily taping the ends of the leads.
High voltage transferred to the load
during testing may cause personal
injury and equipment damage. Do not
use the safeguard circuit breaker in
place of the line circuit breaker. The
safeguard circuit breaker does not
disconnect the generator set from the
load.
Safety Precautions and Instructions
III
Short
circuits.
Hazardous
voltage/current can cause severe
injury or death. Short circuits can
cause bodily injury and/or equipment
damage. Do not contact electrical
connections with tools or jewelry while
making adjustments or repairs.
Remove all jewelry before servicing the
equipment.
Handling the capacitor. Hazardous
voltage can cause severe injury or
death. Electrical shock results from
touching the charged capacitor
terminals. Discharge the capacitor by
shorting the terminals together.
(Capacitor-excited models only)
Electrical backfeed to the utility.
Hazardous backfeed voltage can
cause severe injury or death.
Connect the generator set to the
building/marina electrical system only
through an approved device and after
the building/marina main switch is
opened. Backfeed connections can
cause severe injury or death to utility
personnel working on power lines
and/or personnel near the work area.
Some states and localities prohibit
unauthorized connection to the utility
electrical
system.
Install
a
ship-to-shore transfer switch to prevent
interconnection of the generator set
power and shore power.
Testing live electrical circuits.
Hazardous voltage or current can
cause severe injury or death. Have
trained and qualified personnel take
diagnostic measurements of live
circuits. Use adequately rated test
equipment with electrically insulated
probes and follow the instructions of the
test equipment manufacturer when
performing voltage tests. Observe the
following precautions when performing
voltage tests: (1) Remove all jewelry.
(2) Stand on a dry, approved electrically
insulated mat. (3) Do not touch the
enclosure or components inside the
enclosure. (4) Be prepared for the
system to operate automatically.
(600 volts and under)
IV
Safety Precautions and Instructions
Hot Parts
WARNING
WARNING
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until
it cools.
Servicing the exhaust system. Hot
parts can cause severe injury or
death. Do not touch hot engine parts.
The engine and exhaust system
components become extremely hot
during operation.
Moving Parts
WARNING
Hazardous voltage. Moving rotor.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
WARNING
Rotating parts.
Can cause severe injury or death.
Operate the generator set only when
all guards, screens, and covers are in
place.
Airborne particles.
Can cause severe
blindness.
injury
or
Wear protective goggles and clothing
when using power tools, hand tools,
or compressed air.
Tightening the hardware. Flying
projectiles can cause severe injury
or death. Loose hardware can cause
the hardware or pulley to release from
the generator set engine and can cause
personal injury.
Retorque all
crankshaft and rotor hardware after
servicing. Do not loosen the crankshaft
hardware or rotor thrubolt when making
adjustments or servicing the generator
set. Rotate the crankshaft manually in
a clockwise direction only. Turning the
crankshaft bolt or rotor thrubolt
counterclockwise can loosen the
hardware.
Servicing the generator set when it
is operating. Exposed moving parts
can cause severe injury or death.
Keep hands, feet, hair, clothing, and
test leads away from the belts and
pulleys when the generator set is
running. Replace guards, screens, and
covers before operating the generator
set.
Sound shield removal. Exposed
moving parts can cause severe
injury or death. The generator set
must be operating in order to perform
some
scheduled
maintenance
procedures. Be especially careful if the
sound shield has been removed,
leaving the belts and pulleys exposed.
(Sound-shield-equipped models only)
TP-6137 5/03
Notice
NOTICE
This generator set has been
rewired from its nameplate voltage
to
246242
NOTICE
Voltage reconnection. Affix a notice
to the generator set after reconnecting
the set to a voltage different from the
voltage on the nameplate. Order
voltage reconnection decal 246242
from
an
authorized
service
distributor/dealer.
TP-6137 5/03
NOTICE
NOTICE
Hardware damage. The engine and
generator set may use both American
Standard and metric hardware. Use
the correct size tools to prevent
rounding of the bolt heads and nuts.
Fuse replacement. Replace fuses
with fuses of the same ampere rating
and type (for example: 3AB or 314,
ceramic). Do not substitute clear
glass-type fuses for ceramic fuses.
Refer to the wiring diagram when the
ampere rating is unknown or
questionable.
NOTICE
When replacing hardware, do not
substitute with inferior grade
hardware.
Screws and nuts are
available in different hardness ratings.
To indicate hardness, American
Standard hardware uses a series of
markings, and metric hardware uses a
numeric system. Check the markings
on the bolt heads and nuts for
identification.
NOTICE
Saltwater damage. Saltwater quickly
deteriorates metals. Wipe up saltwater
on and around the generator set and
remove salt deposits from metal
surfaces.
Safety Precautions and Instructions
V
Notes
VI
Safety Precautions and Instructions
TP-6137 5/03
Introduction
This manual provides troubleshooting and repair
instructions for 4EOZ/3.5EFOZ model generator sets.
Refer to the engine service manual for generator set
engine service information.
x:in:001:001
This manual may be used for models not listed on the
front cover.
Information in this publication represents data available
at the time of print. Kohler Co. reserves the right to
change this publication and the products represented
without notice and without any obligation or liability
whatsoever.
Read this manual and carefully follow all procedures
and safety precautions to ensure proper equipment
operation and to avoid bodily injury. Read and follow the
Safety Precautions and Instructions section at the
beginning of this manual. Keep this manual with the
equipment for future reference.
The equipment service requirements are important for
safe and efficient operation. Inspect the parts often and
perform required service at the prescribed intervals.
Maintenance work must be performed by appropriately
skilled and suitably-trained maintenance personnel
familiar with generator set operation and service.
x:in:001:003
Service Assistance
For professional advice on generator power
requirements and conscientious service, please contact
your nearest Kohler distributor or dealer.
D Consult the Yellow Pages under the heading
Generators—Electric
D Visit
the Kohler Power Systems website at
KohlerPowerSystems.com
D Look at the labels and stickers on your Kohler product
or review the appropriate literature or documents
included with the product
D Call toll free in the US and Canada 1-800-544-2444
D Outside the US and Canada, call the nearest regional
office
Africa, Europe, Middle East
London Regional Office
Langley, Slough, England
Phone: (44) 1753-580-771
Fax: (44) 1753-580-036
Asia Pacific
Power Systems Asia Pacific Regional Office
Singapore, Republic of Singapore
Phone: (65) 264-6422
Fax: (65) 264-6455
TP-6137 5/03
China
North China Regional Office, Beijing
Phone: (86) 10 6518 7950
(86) 10 6518 7951
(86) 10 6518 7952
Fax: (86) 10 6518 7955
East China Regional Office, Shanghai
Phone: (86) 21 6288 0500
Fax: (86) 21 6288 0550
India, Bangladesh, Sri Lanka
India Regional Office
Bangalore, India
Phone: (91) 80 3366208
(91) 80 3366231
Fax: (91) 80 3315972
Japan, Korea
North Asia Regional Office
Tokyo, Japan
Phone: (813) 3440-4515
Fax: (813) 3440-2727
Latin America
Latin America Regional Office
Lakeland, Florida, USA
Phone: (863) 619-7568
Fax: (863) 701-7131
X:in:008:001a
Introduction
i
Notes
ii
Service Assistance
TP-6137 5/03
Section 1 Specifications
1.1 General
This manual covers the operation, maintenance,
troubleshooting, and repair of the alternating current
marine generator sets.
Have an authorized service dealer/distributor perform
required servicing to assure your unit continues to meet
USCG requirements.
Please take a few moments to read this manual, then
carefully follow all service recommendations. Keep this
manual aboard your craft for future reference. See
Figure 1-1 for identification and location of components.
The 4EOZ/3.5EFOZ models are powered by a
Farymann one-cylinder, direct water-cooled, four-cycle
diesel engine.
Kohler Co. develops all Kohlerr marine generator set
ratings using accepted reference conditions of 25_C
(77_F) and pressure of 98.9 kPa (29.2 in. Hg) dry
barometer. ISO 3046 and ISO 8528-1 include reference
conditions and output calculations. Obtain technical
information bulletin (TIB-101) on ratings guidelines for
complete ratings definitions.
Your craft is equipped with a dependable 120 volt
(60 Hz) or 230 volt (50 Hz), single phase, alternating
current generator set.
1.2 Generator
Generator Model
Dimensions, mm (in.)
Length
Width
Height
Weight, kg (lbs.)
Air requirements—combustion, L/min. (cfm)
Fuel consumption, Lph. (gph) at % load
25%
50%
75%
100%
Generator type
Coupling type
Excitation type
Shaft RPM
Number of output leads
Voltage regulation model
Voltage regulation
Frequency regulation
Voltage
Amps @ 25 °C (77 °F)
kW/kVA @ 25 °C (77 °F)
Phase (Hz)
Cold main field (rotor) resistance (ohms)
Cold stator resistance (ohms)
1--2
3--4
C1--C2
10--11
TP-6137 5/03
4EOZ
3.5EFOZ
560 (22.05)
390 (15.35)
490 (19.29)
209.5 (95.0)
436 (15.4)
363 (12.8)
0.64 (0.17)
0.60 (0.16)
1.02 (0.27)
0.96 (0.25)
1.36 (0.36)
1.28 (0.34)
1.70 (0.45)
1.60 (0.42)
2 pole, rotating field
Tapered hub
Brushless exciter
3600
3000
4
2
Capacitor type
±5 %
±3 %
120
230
29.2/14.6
13.9
3.5
3.2
1 (60 Hz)
1 (50 Hz)
2.57
0.96
0.96
2.32
0.068
1.23
-2.87
0.091
Section 1 Specifications
1
1.3 Service Views
5
2
3
Service-Side View
Circuit Breaker Panel
14
4
15
13
6
19
7
Engine-End View
1
20
18
21
12
11
10
9
22
8
Service-Side View
(Shown without sound shield doors and panels)
26
23
17
27
38
16
24
28
37
29
30
36
25
31
35
32
33
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Cooling air inlet
On/off button
Hourmeter
Start button
Circuit breaker panel
Remote panel connector
Fuel inlet
Fuel return
Water outlet/exhaust outlet
Siphon break connection
Customer load lead access
Remote panel harness access
AC circuit breaker
Input fuse
Customer load lead access connection
Fuel injection pump
Oil fill
Oil drain valve and hose
Fuel filter
Figure 1-1
2
34
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
ADV6652-
High engine water temperature safety shutdown switch
Air cleaner
Fuel feed pump
Governor
Battery connection (--)
Oil check
Battery connection (+)
Starter solenoid/starter motor
Lifting eye
Mixing elbow
High exhaust temperature safety shutdown switch
Low oil pressure safety shutdown switch
Control panel connector
Seawater inlet
Ground lug (equipment ground)
Seawater pump (water inlet)
Anticorrosion zinc anode
Controller
Nameplate
Service Views
Section 1 Specifications
TP-6137 5/03
1.4 Engine
Generator Model
Engine manufacturer
Engine model
Number of cylinders
Cylinder block material
Cylinder head material
Piston rings
Crankshaft material
Connecting rod material
Governor
Bore x stroke, mm (in.)
Displacement, L (cu. in.)
Compression ratio
Horsepower, 60/50 Hz
RPM, 60/50 Hz
Direction of rotation (as viewed from generator end)
Lubrication system
Lube oil capacity w/filter, L (qts.)
Oil recommendation, API
Fuel injection timing (BTDC)
Fuel injection pressure, bar (psi)
Combustion system
Battery voltage
Battery recommendation, min.
Battery charging (alternator)
Fuel recommendation
Fuel shutoff solenoid system
Fuel feed pump
Fuel pump priming
Max. recommended fuel pump lift, m (ft.)
Thermostat, freshwater/seawater
Starter motor
Intake/exhaust valve clearance (cold), mm (in.)
Inlet water line hose ID
(seawater pump inlet), mm (in.)
Outlet water line hose ID
(mixing elbow outlet), mm (in.)
Fuel inlet (fuel pump inlet)
Fuel return size type
TP-6137 5/03
4EOZ
3.5EFOZ
Farymann Diesel
18 W
1
Cast iron
Cast iron
2 compression/1 oil
Stamped forging
Aluminum
Centrifugal, mechanical
82 x 55 (3.23 x 2.17)
0.29 (17.7)
20:1
5.9
3600
5.6
3000
Counterclockwise
Pressure, trochoid pump
1.25 (1.32)
CD, CD/CC, or CC
22°--22.5°
17°--18.5°
200 (2900)
Direct injection
12 volt, negative ground
500 CCA, 100 amp hr.
15 amps @ 12 volts
Diesel, DIN 51601
(ASTM D 975--67 ID + 2D/BS 2869 1967 A1 + A2)
Electric
Electric, solenoid type
Electric
0.9 (3)
75°C (167°F)/50°C (122°F)
12 volt
0.2 (0.008)
16 (5/8)
51 (2.0)
1/4 NPT
1/4 NPT
Section 1 Specifications
3
1.5 Torque Specifications
Torque Specifications—Nm (ft. lbs.)
4EOZ/3.5EFOZ
Cylinder head nuts
Connecting rod nuts
Valve cover nuts
Main bearing plate nuts
Fuel pump nuts
Delivery valve holder--fuel pump
High pressure fuel pipe nut--fuel pump
High pressure fuel pipe nut--injector
Injector clamp nuts
Governor on crankshaft
Flywheel nut
Gear cover screws
Tappet block screws
Oil pump screws
Oil cooler screws
Banjo bolt on fuel pump
Body--injector nut
Starter screws
Flywheel/rotor hub nuts
Nut fixing the rotor
Stator screws
Alternator bracket screws
Engine bracket screws
30--33 (22--24.5)
30--33 (22--24.5)
8--12 (6--9)
30--33 (22--24.5)
30--33 (22--24.5)
34--39 (25--29)
18--22 (13.5--16)
25--30 (18.5--22)
8--12 (6--9)
55--60 (40.5--44.5)
216--226 (159.5--166.5)
34--38 (25--28)
8--10 (6--7.5)
16--20 (12--15)
9--11 (6.5--8)
25--35 (18.5--26)
25--30 (18.5--22)
20 (15)
25 (18.5)
25 (18.5)
30 (22)
50 (37)
50 (37)
4
Section 1 Specifications
TP-6137 5/03
Section 2 Operation
2.1 Prestart Checklist
Oil Level. Maintain the oil level at or near, not over, the
full mark on the dipstick.
To ensure continued satisfactory operation perform the
following checks or inspections before or at each
startup, as designated, and at the intervals specified in
the service schedule. In addition, some checks require
verification after the unit starts.
Operating Area. Check for obstructions that could
block the flow of cooling air. Keep the air intake area
clean. Do not leave rags, tools, or debris on or near the
generator set.
Air Inlets. Check for clean and unobstructed air inlets.
Air Shrouding. Check for securely installed and
positioned air shrouding.
Battery. Check for tight battery connections. Consult
the battery manufacturer’s instructions regarding
battery care and maintenance.
Seawater Pump Priming. Prime the seawater pump
before initial startup. To prime the pump: (1) close the
seacock, (2) remove the hose from the water-filter
outlet, (3) fill the hose and seawater pump with clean
water, (4) reconnect the hose to the water filter outlet,
and (5) open the seacock. Confirm seawater pump
operation on startup as indicated by water discharge
from the exhaust outlet.
Exhaust System. Check for exhaust leaks and
blockages. Check the silencer and piping condition and
check for tight exhaust system connections.
2.2 Marine Inspection
Inspect the exhaust system components (exhaust
manifold, mixing elbow, exhaust line, hose clamps,
silencer, and outlet flapper) for cracks, leaks, and
corrosion.
Kohler Co. recommends that all boat owners have their
vessels—especially the exhaust system attached to the
generator set—inspected at the start of each boating
season by the local Coast Guard Auxiliary. If there is no
Coast Guard Auxiliary in the area, contact an authorized
Kohler distributor/dealer for the inspection.
D Check the hoses for softness, cracks, leaks, or dents.
Replace the hoses as needed.
D Check for corroded or broken metal parts and replace
them as needed.
D Check for loose, corroded, or missing clamps.
Tighten or replace the hose clamps and/or hangers
as needed.
D Check that the exhaust outlet is unobstructed.
D Visually inspect for exhaust leaks (blowby). Check
for carbon or soot residue on exhaust components.
Carbon and soot residue indicates an exhaust leak.
Seal leaks as needed.
D Ensure that the carbon monoxide detector(s) is (1) in
the craft, (2) functional, and (3) energized whenever
the generator set operates.
Note: Never operate the generator set without a
functioning carbon monoxide detector.
Fuel Level. Check the fuel level and keep the tank(s)
full to ensure adequate fuel supply.
TP-6137 5/03
2.3 Angular Operation
See Figure 2-1 for angular operation limits for units
covered in this manual.
Continuous
Intermittent—
3 minutes or less
25_
30_
Maximum value for all directions
Figure 2-1
Angular Operation
m:op:001:004
2.4 Operation in European Union
Member Countries
This generator set is specifically intended and approved
for operation below the deck in the engine compartment.
Operation above the deck and/or outdoors would
constitute a violation of European Union Directive
2000/14/EC noise emission standard.
Section 2 Operation
5
2.5 Exercising the Generator Set
2.6.1
Operate the generator set under load once each week
for one hour with an operator present.
The following table describes the controls and indicators
located at the controller. See Figure 2-2.
The operator should perform all of the prestart checks
before starting the exercise procedure. Start the
generator set according to the starting procedure in the
controller section of this manual. While the generator
set is operating, listen for a smooth-running engine and
visually inspect the generator set for fluid or exhaust
leaks.
Controls and Indicators
Name
On/Off Button
Description
Use this button to initiate the start
procedure or to stop the generator set.
Press the button to the ON position
before starting the generator set.
Press the button to the OFF position to
stop the generator set.
Start Button
Use this button to start the generator
set. Press the start button to start the
generator set.
Hourmeter
The meter records total generator set
operating hours for reference in
maintenance scheduling.
AC Circuit
Breaker
The circuit breaker trips when a fault
occurs in the output circuit. During
maintenance of craft or generator set
wiring, the circuit breaker disconnects
the generator set. Place the circuit
breaker(s) in the ON position to close
the circuit breaker. See Figure 1-1.
Oil Pressure
Lamp
The lamp illuminates (red) if the
generator set shuts down because of
low oil pressure.
Engine Lamp
The lamp illuminates (red) if the
generator set shuts down because of
high engine temperature.
Exhaust Lamp
The lamp illuminates (red) if the
generator set shuts down because of
high exhaust temperature.
Remote Start
Connectors
A 4-pin connector on the controller’s
side allows the connection of the
(optional) remote start/stop switch
and hourmeter panel kit. See
Figure 2-3.
x:op:001:005
2.6 Starting and Stopping
Procedure
Note: Opening seacock. Before starting the generator
set, open the seacock to allow cooling water
passage. Failure to do so could damage the
seawater pump impeller and cause serious
engine overheating damage.
Note: Transfer switch.
Check that the marine
ship-to-shore transfer switch, if equipped, is in
the ship position.
Note: Close seacock if engine fails to start. If the
engine fails to start after the first attempt, close
the seacock before the next starting attempt.
Failure to close the seacock may cause seawater
to enter the exhaust piping, silencer, and/or
engine.
A water-filled exhaust piping and
silencer may further hinder generator starting
and cause seawater entry into the engine
cylinder through the exhaust valve. Water
ingested into the engine may cause major engine
damage that the Kohler Co. warranty does not
cover.
Note: Close seacock if water enters the exhaust
system. If water enters the exhaust system,
close the seacock and drain the water from the
exhaust system at the silencer’s drain plug before
attempting to start the generator set. If excessive
cranking is a chronic problem, have the unit,
including the exhaust system, serviced by an
authorized Kohlerr distributor/dealer.
A 25-pin connector underneath the
controller allows the connection of the
(optional) remote start/stop switch,
hourmeter, and indicator panel kit.
See Figure 2-3.
Note: Starter motor cooldown. Do not crank the
engine continuously for more than 10 seconds at
a time. Allow a 60-second cooldown period
between cranking attempts if the engine does not
start. If the unit fails to start after 3 attempts,
contact an authorized Kohlerr distributor/ dealer
for repair. Failure to follow these guidelines may
result in starter motor burnout.
6
Section 2 Operation
TP-6137 5/03
2.6.2
The following table describes the actions required to
start the generator set.
1
Step
1
2
6
3
5
Hourmeter
On/Off button
Oil pressure lights
Engine temperature lights
Exhaust temperature lights
Start button
Figure 2-2
Initiate Starting
Press the controller on/off button to the ON position.
Note: The controller’s oil pressure, engine, and
exhaust lamps illuminate.
3
Starting
Hold the generator set controller start button until the
generator set starts. Green LEDs indicate good
water
engine
and
exhaust
temperature
performance.
Note: If the start button is pressed before a normal
start procedure, an electrical device disconnects the
starter pinion.
2.6.3
Controls and Indicators
1
Action
Fuel shutoff valve
Open the manual fuel shutoff valve, if equipped.
2
4
1.
2.
3.
4.
5.
6.
Starting the Generator Set
Stopping the Generator Set
The following table describes the actions required to
stop the generator set.
2
Step
1
Action
Cooldown
Run the generator set at no load for 5 minutes to
ensure adequate engine cooldown.
2
Stopping
Press the controller on/off button to the OFF position
to stop the generator set.
Note: The controller’s oil pressure, engine, and
exhaust lamps darken.
3
Fuel shutoff valve
Close the manual fuel shutoff valve, if equipped.
2.6.4
Engine Safety Shutdown Switches
The engine is protected by 3 shutdown switches which
automatically reset when the engine failure is corrected.
The engine safety shutdown switches become
functional when the unit comes up to speed, AC voltage
is available, and after a 3--5 second time delay.
1. 4-pin connector
2. 25-pin connector
Figure 2-3
Remote Panel Connections
The engine will shut down when:
D The engine oil pressure is 0.3--0.7 bar (30--70 kPa) or
less.
D The engine water temperature is 78--83_
C
(172--181_ F) or higher.
D The water temperature in the mixer elbow is
94--100_ C (201--212_ F) or higher
Note: The low oil pressure switch is not a low oil level
shutdown. Check the oil level regularly to protect
against engine damage from low oil level.
TP-6137 5/03
Section 2 Operation
7
2.6.5
Circuit Protection
2.7.2
The AC circuit breaker trips when a fault is detected in
the output circuit. After correcting the fault, reset the AC
circuit breaker by placing in the ON position. See
Figure 1-1 for circuit breaker location.
Note: Replace the 25-amp fuse installed in the control
box after a fault. See Figure 1-1 for the fuse
location. Unit is now ready for restart.
Remote Panel Kit
The remote panel kit includes a start button, an on/off
button, an hourmeter to record total generator set
operating hours, an engine oil pressure light, an engine
water temperature light, and an exhaust gas light. Order
additional extension harnesses for panel connection to
the 25-pin connector.
1
2.7 Remote Panel Kits
Remote start/stop panels allow starting or stopping the
generator set from a remote location.
2
6
3
2.7.1
Remote Start/Stop Panel Kit
4
The remote start/stop panel includes an hourmeter and
start/stop switch. The generator set includes a 4-pin
connector for connection of the remote start/stop panel.
Order a 4- to 6-pin harness kit to connect the panel to the
4-pin connector located at the controller. See Figure 2-4
and Figure 2-5.
5
GM207681.
2.
3.
4.
5.
6.
Hourmeter
On/Off button
Oil pressure lights
Engine temperature lights
Exhaust temperature lights
Start button
Figure 2-6
1
Remote Panel Features
3
2
A-226965-A
1. Hourmeter
2. Start/Stop switch
3. 6-pin connector
Figure 2-4
Remote Start/Stop Panel Features
1
1. Start/Stop switch connection
Figure 2-5
8
Remote Start/Stop Panel Connection
Section 2 Operation
TP-6137 5/03
Section 3 Scheduled Maintenance
NOTICE
3.1 General
WARNING
Saltwater damage. Saltwater quickly deteriorates metals.
Wipe up saltwater on and around the generator set and
remove salt deposits from metal surfaces.
NOTICE
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or equipment connected to the set, disable the
generator set as follows: (1) Press the generator set on/off
button to shut down the generator set. All indicator lamps dim.
(2) Disconnect the power to the battery charger, if equipped.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--) lead last when reconnecting the
battery. Follow these precautions to prevent the starting of the
generator set by the remote start/stop switch.
WARNING
Rotating parts.
Can cause severe injury or death.
Operate the generator set only when
all guards, screens, and covers are in
place.
Servicing the generator set when it is operating. Exposed
moving parts can cause severe injury or death. Keep
hands, feet, hair, clothing, and test leads away from the belts
and pulleys when the generator set is running. Replace
guards, screens, and covers before operating the generator
set.
Hardware damage. The engine and generator set may use
both American Standard and metric hardware. Use the correct
size tools to prevent rounding of the bolt heads and nuts.
See the Safety Precautions and Instructions at the
beginning of this manual before attempting to service,
repair, or operate the generator set. Have an authorized
distributor/dealer perform generator set service.
Engine Service. Perform generator set engine service
at the intervals specified by the engine operation
manual.
Generator Set Service. Perform generator set service
at the intervals specified.
If the generator set operates under dusty or dirty
conditions, use dry compressed air to blow dust out of
the alternator. With the generator set running, direct the
stream of air in through the cooling slots at the alternator
end.
Routine Maintenance. Refer to the following generator
set service schedule, the engine service schedule, and
the hourmeter located on the generator set controller to
determine when to schedule routine maintenance.
Service more frequently generator sets that are subject
to extreme weather or dusty or dirty conditions.
Service Log. Use the Operating Hour Service Log
located in the back of this manual to document
performed services.
Service Schedule. Perform maintenance on each item
in the service schedule at the designated intervals for
the life of the generator set. For example, an item
requiring service every 100 hours or 3 months also
requires service after 200 hours or 6 months, 300 hours
or 9 months, and so on.
x:sm:004:001
Sound shield removal. Exposed moving parts can cause
severe injury or death. The generator set must be operating
in order to perform some scheduled maintenance procedures.
Be especially careful if the sound shield has been removed,
leaving the belts and pulleys exposed.
(Sound-shield-equipped models only)
TP-6137 5/03
Section 3 Scheduled Maintenance
9
3.2 Service Schedule—3.5EFOZ and 4EOZ Models
Perform Service at Intervals
Indicated (X)
Daily
Every
50 Hrs.
or 1
Month
Every
Every
100 Hrs. 200 Hrs.
or 3
or 6
Months Months
Every
400 Hrs.
or 12
Months
Every
600 Hrs.
or 18
Months
FUEL SYSTEM
Check the fuel level and fill as necessary
Check for any abnormal fuel injection sound [
X
(Before
operation)
X
(During
operation)
Remove the sediment from the fuel tank and drain the fuel
tank [w
X
X
(Break-in
period)
Drain water from the fuel filter and strainer *[
X
X
Clean the filter inserts of the fuel transfer pump *[
Replace the fuel filter *
Check the fuel injection nozzles/check the injection spray
condition *[]
X
X
LUBRICATION SYSTEM
Check the crankcase oil level and add oil as necessary
X
(Before
operation)
X
(Break-in
period)
Replace the oil in the crankcase *
X
X
Clean the oil strainer *[
COOLING SYSTEM
Check the seawater outlet and clean as necessary
Check the function of the siphon break, if equipped
Check the anticorrosion zinc anode’s condition *
Check/replace the seawater pump impeller *[
Replace the anticorrosion zinc anode *[
*
[
]
w
k
10
X
X
X
X
(Check)
X
(Replace)
X
Requires removal of the sound shield, if installed
Consult your local distributor/dealer for service
Read the WARNING found at the beginning of the manual
Consult the operating instructions supplied with the craft
Should be performed by your local distributor/dealer
Section 3 Scheduled Maintenance
TP-6137 5/03
Perform Service at Intervals
Indicated (X)
Daily
Every
50 Hrs.
or 1
Month
Every
Every
100 Hrs. 200 Hrs.
or 3
or 6
Months Months
Every
400 Hrs.
or 12
Months
Every
600 Hrs.
or 18
Months
INTAKE/EXHAUST SYSTEM
X
(Before
operation)
X
Check the exhaust gas condition. If the exhaust is blue or
(During
black, contact your local distributor/dealer
operation)
Clean the intake silencer element *
Clean the exhaust/water mixing elbow *[
Replace the intake silencer element *
Inspect the complete exhaust system k
Inspect the exhaust system components *
X
X
X
X
ELECTRICAL SYSTEM
Keep the battery charged and in good condition w
X
(Before
operation)
Check and tighten the electrical connections *
Clean the battery cables [
X
X
ENGINE AND MOUNTING
Check for water, fuel, and oil leakage *[]
Retighten any loose nuts and bolts *
X
(After
operation)
X
(Before
operation)
X
Check the mounting bolts/vibromounts and tighten if
necessary *
Adjust the intake/exhaust valve clearance *[
Head bolt retightening *[
X
X
X
REMOTE CONTROL SYSTEM
Check the remote control operation
X
(Break-in
period)
X
GENERATOR
Test run the generator set
Blow dust out of the generator *[
*
[
]
w
k
X
(Weekly)
X
Requires removal of the sound shield, if installed
Consult your local distributor/dealer for service
Read the WARNING found at the beginning of the manual
Consult the operating instructions supplied with the craft
Should be performed by your local distributor/dealer
TP-6137 5/03
Section 3 Scheduled Maintenance
11
3.3 Lubrication System
See the Service Schedule for oil change and oil filter
replacement intervals. See Section 1 for the oil drain, oil
check, and oil fill locations.
3.3.1
2
Oil Specifications
Use HD oil that meets the American Petroleum Institute
(API) classification of CD, CC/CD, or CC. Using an
unsuitable oil or neglecting an oil change may result in
damage and a shorter engine life. Figure 3-1 shows the
recommended Society of Automotive Engineers (SAE)
viscosity designation for given operating temperature
ranges.
1
TP-5586-3
1. Min mark
2. Max mark
Figure 3-2
Note: Do not operate the set if the oil level is below the
Min mark or above the Max mark.
3.3.3
SAE
Service
Grade
Oil Level Check Marks
Oil Change
Change the oil more frequently if the generator operates
under dirty, dusty conditions. See Figure 3-3 for oil
capacities.
5W20/5W30
10W30
20W40
Model
L (Qts.)
3.5EFOZ/4EOZ
15W40
Figure 3-3
1.25 (1.32)
Oil Capacities
10W40
°C
--30
--20
--10
0
10
20
30
40
°C
100
°F
Oil Change Procedure
Whenever possible, drain the oil while it is still warm.
°F
--20
0
20
40
60
Operating Temperature
Figure 3-1
80
1. Drain the oil.
TP-5856-1
Engine Oil Selection
a. Press the generator set on/off button to stop the
generator set.
Note: Failure to observe the oil specifications may
cause inadequate lubrication/oil pressure and
cold-starting difficulties.
b. Disconnect the power to the battery charger, if
equipped.
3.3.2
c. Disconnect the generator set engine starting
battery, negative (--) lead first.
Oil Check
Check the oil level in the crankcase daily or before each
startup to ensure that the level is in the safe range. To
check the oil level, remove the dipstick and wipe the end
clean, reinsert as far as possible, and remove. Maintain
the oil level between the Min and Max marks on the
dipstick, as shown in Figure 3-2. See Section 1,
Figure 1-1, for dipstick location.
12
Section 3 Scheduled Maintenance
TP-6137 5/03
d. Remove the oil drain hose from its retaining
clip. See Figure 3-4. Remove the cap from the
oil drain hose and lower the hose into an oil
collection container.
Electric Oil Drain/Oil Fill Pump Procedure:
Connect the pump to the end of the oil drain
hose. Place the outlet of the pump into an oil
collection container. Remove the oil fill cap.
1
2
1
TP-6134
1. Oil fill cap
2. Flange
TP-6134
1. Oil drain hose
Figure 3-4
Oil Drain Hose
e. Allow time for the engine oil to drain completely.
Electric Oil Drain/Oil Fill Pump Procedure:
Activate the pump until all of the oil is removed.
Go to step 2.
Figure 3-5
Oil Strainer
3. Fill with oil. Add new oil of the weight, grade, and
quantity specified in Section 3.3.3.
Electric Oil Drain/Oil Fill Pump Procedure:
Disconnect the pump. Close the oil drain valve.
Replace the cap on the oil drain hose.
4. Check for leaks.
f. Replace the cap on the oil drain hose. Replace
the oil drain hose in its retaining clip.
a. Check that the generator set on/off button is in
the OFF position.
Note: Dispose of all waste materials (engine
oil, fuel, filter, etc.) in an environmentally
safe manner.
b. Reconnect the generator set engine starting
battery, negative (--) lead last.
2. Oil Strainer Service. Clean the oil strainer at the
interval listed in the Service Schedule.
c. Reconnect the power to the battery charger, if
equipped.
x:sm:001:003:
a. Remove the flange on the crankcase. See
Figure 3-5 for location.
b. Remove the end of the oil drain hose.
c. Remove the metallic screen (oil strainer).
d. Clean the oil stainer using diesel oil, but no
gasoline.
Consult the engine operation
manual.
TP-6137 5/03
Section 3 Scheduled Maintenance
13
3.4 Battery
Consult the battery manufacturer’s
regarding battery care and maintenance.
instructions
WARNING
Sulfuric acid in batteries.
Can cause severe injury or death.
Battery gases. Explosion can cause severe injury or
death. Battery gases can cause an explosion. Do not smoke
or permit flames or sparks to occur near a battery at any time,
particularly when it is charging. Do not dispose of a battery in a
fire. To prevent burns and sparks that could cause an
explosion, avoid touching the battery terminals with tools or
other metal objects. Remove all jewelry before servicing the
equipment. Discharge static electricity from your body before
touching batteries by first touching a grounded metal surface
away from the battery. To avoid sparks, do not disturb the
battery charger connections while the battery is charging.
Always turn the battery charger off before disconnecting the
battery connections. Ventilate the compartments containing
batteries to prevent accumulation of explosive gases.
Wear protective goggles and
clothing. Battery acid may cause
blindness and burn skin.
Battery electrolyte is a diluted sulfuric acid. Battery acid
can cause severe injury or death. Battery acid can cause
blindness and burn skin. Always wear splashproof safety
goggles, rubber gloves, and boots when servicing the battery.
Do not open a sealed battery or mutilate the battery case. If
battery acid splashes in the eyes or on the skin, immediately
flush the affected area for 15 minutes with large quantities of
clean water. Seek immediate medical aid in the case of eye
contact. Never add acid to a battery after placing the battery in
service, as this may result in hazardous spattering of battery
acid.
14
Section 3 Scheduled Maintenance
TP-6137 5/03
3.5 Generator Storage Procedure
Perform the following storage procedure before taking a
generator set out of service for three months or longer.
Follow the engine manufacturer’s recommendations, if
available, for fuel system and internal engine
component storage.
1. Unscrew the seawater pump cover to drain the
cooling water from the engine.
2. Remove the hose from the fitting to drain the
cooling water from the alternator.
3.5.4
Exterior
x:sm:002:001
Prepare the exterior for storage as follows:
3.5.1
Lubricating System
1. Clean the exterior surface of the generator set.
Prepare the engine lubricating system for storage as
follows:
1. Run the generator set for a minimum of 30 minutes
to bring it to normal operating temperature.
2. Stop the generator set.
3. With the engine still warm, drain the oil from the
crankcase.
4. Refill the crankcase with oil suited to the climate.
2. Seal all engine openings except for the air intake
with nonabsorbent adhesive tape.
3. To prevent impurities from entering the air intake
and to allow moisture to escape from the engine,
secure a cloth over the air intake.
4. Mask electrical connections.
5. Spread a light film of oil over unpainted metallic
surfaces to inhibit rust and corrosion.
x:sm:002:006a
5. Run the generator set for two minutes to distribute
the clean oil.
6. Stop the generator set.
3.5.5
Battery
Perform battery storage after all other storage
procedures.
7. Check the oil level and adjust, if needed.
x:sm:002:002
3.5.2
Fuel System
1. Place the generator set master switch in the
OFF/RESET position.
2. Disconnect the battery(ies), negative (--) lead first.
Prepare the fuel system for storage as follows:
3. Clean the battery.
Diesel-Fueled Engines
4. Place the battery in a cool, dry location.
1. Fill the fuel tank with #2 diesel fuel.
2. Condition the fuel system with compatible
additives to control microbial growth. See the
engine operation manual.
3. Change the fuel filter and bleed the fuel system.
See Section 5.
5. Connect the battery to a float/equalize battery
charger or charge it monthly with a trickle battery
charger.
Refer to the battery charger
manufacturer’s recommendations.
Maintain a full charge to extend battery life.
x:sm:002:007
x:sm:002:004
3.5.3
Cooling System
Prepare the cooling system for storage as follows:
TP-6137 5/03
Section 3 Scheduled Maintenance
15
Notes
16
Section 3 Scheduled Maintenance
TP-6137 5/03
Section 4 Intake and Exhaust System
4.1 Air Intake Silencer/Filter
Air Cleaner Service/Replacement
At the interval specified in the service schedule, clean
the air intake screen. Clean the silencer more frequently
if the generator set operates in dirty, dusty conditions.
A dry-type air cleaner silences and filters the intake air.
The air intake silencer assembly connects to the intake
manifold via a flexible hose.
1
1. Remove the four screws to remove the air cleaner
cover.
2. Remove the air cleaner screen.
3. Tap the screen lightly against a flat surface to
dislodge loose surface dirt. Do not clean in any
liquid or use compressed air as these will damage
the screen.
4. Examine the screen and housing for damage and
wear. Replace the screen or housing if necessary.
5. Wipe the air cleaner cover and base with a clean
rag to remove any dirt. Ensure that dirt does not
enter the intake port.
TP-6134
1. Air Cleaner
Figure 4-1
Air Cleaner
6. Make sure that the sealing surfaces fit correctly,
and replace the four screws.
1
TP-6134
1. Air cleaner screen
Figure 4-2
TP-6137 5/03
Air Cleaner Screen
Section 4 Intake and Exhaust System
17
4.2 Exhaust System
4.3 Mixing Elbow
Check the mixing elbow for carbon buildup and
corrosion inside the pipe. Clean the residual carbon
buildup with a wire brush. Inspect the exhaust manifold
flange for cracking and corrosion. The mixing elbow
combines high temperature exhaust and cooling
seawater. The mixture, when exposed to engine
vibration, makes conditions conducive to rapid
deterioration and failure if not correctly maintained. If
any damage is detected with the mixing elbow or other
exhaust components, replace the damaged components
to prevent engine exhaust (carbon monoxide) leakage.
WARNING
Carbon monoxide.
Can cause severe
fainting, or death.
nausea,
The exhaust system must be
leakproof and routinely inspected.
Inspecting the exhaust system. Carbon monoxide can
cause severe nausea, fainting, or death. For the safety of
the craft’s occupants, install a carbon monoxide detector.
Consult the boat builder or dealer for approved detector
location and installation. Inspect the detector before each
generator set use. In addition to routine exhaust system
inspection, test the carbon monoxide detector per the
manufacturer’s instructions and keep the detector operational
at all times.
1
At the interval specified in the service schedule, inspect
the exhaust system. See Section 1 for the exhaust
outlet location.
Inspection Points
Inspect the the exhaust system components (exhaust
manifold, mixing elbow, exhaust line, hose clamps,
silencer, and outlet flapper) for cracks, leaks, and
corrosion.
TP-6134
1. Mixing Elbow
Figure 4-3
Mixing Elbow Location
D Check the hoses for softness, cracks, leaks, or dents.
Replace the hoses as needed.
D Check for corroded or broken metal parts and replace
them as needed.
D Check for loose, corroded, or missing clamps.
Tighten or replace the hose clamps and/or hangers
as needed.
D Check that the exhaust outlet is unobstructed.
D Visually inspect for exhaust leaks (blowby). Check
for carbon or soot residue on exhaust components.
Carbon and soot residue indicates an exhaust leak.
Seal leaks as needed.
D Ensure that the carbon monoxide detector is (1) in the
craft, (2) functional, and (3) energized whenever the
generator set operates.
x:op:001:002
18
Section 4 Intake and Exhaust System
TP-6137 5/03
Section 5 Fuel System
5.1 General
6
4
7
WARNING
3
5
8
2
9
Fire.
Can cause severe injury or death.
Do not smoke or permit flames or
sparks near fuels or the fuel system.
Combustible materials. A sudden flash fire can cause
severe injury or death. Do not smoke or permit flames or
sparks near the fuel system. Keep the compartment and the
generator set clean and free of debris to minimize the risk of
fire. Wipe up spilled fuels and engine oil.
In most installations, both the generator set and the
propulsion engine operate from a common fuel tank with
a dual dip tube arrangement. The generator set dip tube
is shorter than the propulsion engine’s dip tube. With
this arrangement, fuel may not be available to the
generator set when the fuel supply is low.
Description
An electric fuel pump draws fuel from the tank. The fuel
flows in the fuel supply line, through the electric pump,
the filter, the engine stop solenoid, and then reaches the
fuel injection mechanical pump.
The injection pump pushes the fuel from the nipple valve
to the injector. The injector ejects and atomizes the
required fuel at high pressure before the piston reaches
TDC. Any excess fuel returns to the tank. The rubber
pipe located between the mechanical pump and the
injector’s banjo return bolt allows for bleeding air from
the fuel system.
1
10
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Fuel tank
Electric fuel pump
Fuel supply line
Fuel filter
Stop solenoid
Air bleeding pipe
Injector assembly
High pressure fuel line
Fuel injection pump (mechanical)
Fuel return line
Figure 5-1
Fuel System Schematic Typical
5.2 Fuel Specifications
Use a clean, good quality diesel fuel oil with a cetane
number of 45 or greater. Clean fuel prevents diesel fuel
injectors and pumps from clogging.
Fuel Recommendation
DIN 51601
(ASTM D 975
975--67
67 ID + 2D/BS 2869 1967 A1 + A2)
Note: Never store diesel fuel in galvanized containers;
diesel fuel and the galvanized coating react
chemically to produce flaking that quickly clogs
filters or causes fuel pump or injector failure.
Avoid storing fuel for more than one month. Take special
precautions to keep all dirt, water, and other
contaminants out of fuel to prevent the growth of
microbes. Microbes form slime that clogs the fuel filter
and lines.
Do not run the generator set out of fuel because the fuel
lines will draw in air and necessitate bleeding the fuel
system before restarting the unit.
TP-6137 5/03
Section 5 Fuel System
19
5. Remove and discard the fuel filter.
5.3 Fuel Filter
The fuel filter prevents the entry of dirt into the fuel
system and preserves the injector and fuel injection
pump. The quality and condition of the fuel largely
determine the filter’s useful life. Replace the fuel filter as
listed in the service schedule. See Figure 5-2.
Note: Dispose of all waste materials (engine oil,
fuel, filter, etc.) in an environmentally safe
manner.
6. Replace the fuel filter with the arrow on the fuel filter
housing indicating the direction of fuel flow. See
Figure 5-4.
1
TP-6134
1. Fuel filter
Figure 5-2
Fuel Filter Location
Fuel Filter Cleaning/Replacement Procedure
1. Close the fuel supply valve.
Figure 5-4
Fuel Filter Arrow
2. Using a rag, clean the fuel line.
7. Reconnect the pipes to the fuel filter.
3. To avoid fuel leakage, clamp off the fuel supply line
near the filter.
4. Disconnect the inlet and outlet lines to the fuel filter.
Ensure that dirt does not enter the fuel system. See
Figure 5-3.
Figure 5-3
20
8. Remove the clamp from the fuel supply line.
9. Open the fuel supply valve.
10. Bleed the system. See Section 5.9, Bleeding the
Fuel System.
Disconnect the Fuel Line
Section 5 Fuel System
TP-6137 5/03
5.4 Fuel Injector Nozzle
Injector Pressure Test
The fuel injector nozzle ejects and atomizes the fuel in
the cylinder under high pressure. As it is located in the
combustion chamber, it operates at high temperatures
and strong mechanical stress. Clean and adjust the
injector as described below.
Injector Cleaning
1. Use a brass wire brush to remove residual
combustion products on the nozzle’s surface.
2. A special tool/needle is required to clean the
injector nozzle’s spray hole. Consult the engine
service manual for more information.
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
1. Connect the injector to a tester to check the
injection pressure value. See Figure 5-6.
2. Using the hand pump lever of the tester, pump fuel
in the injector until it ejects at the specified
pressure.
3. During this operation, the ejected fuel must be
evenly atomized without leakage or dripping.
Figure 5-5
Injector
Figure 5-6
TP-6137 5/03
Tester
Section 5 Fuel System
21
Injector Overhaul
Injector Adjustment
1. If, during the injector pressure test, the pressure
values are not correct, replace the shims in the
injector.
1. Inspect the injector assembly to ensure that the
nozzle’s needle is in the hole of the pressure piece.
2. If the nozzle leaks or does not atomize, replace the
entire nozzle.
a. Unscrew the injector nut.
b. Remove the nozzle assembly, pressure piece,
spring seat’s conical stop, spring, and shims.
See Figure 5-7.
3. Lapping of the nozzle needle is not recommended.
Note: A change of 0.1 mm (.004 in.) shim size can
modify the pressure value of the injector of
10 bar (145 psi). The thicker shim increases
the pressure value of the injector while the
thinner shim decreases the pressure value
of the injector. Add or remove shims to
obtain the correct pressure value.
5
4
3
2
1
1.
2.
3.
4.
5.
Injector nut
Nozzle assembly
Pressure piece
Spring seat’s conical stop
Spring
Figure 5-7
22
Injector Components
Section 5 Fuel System
TP-6137 5/03
5.5 Excess Fuel Start Device
The engine is equipped with a device that supplies extra
fuel to facilitate engine starting. See Figure 5-8. When
the device’s button is pulled down, its upper conical
surface releases the fuel control lever and the fuel
injection pump pin performs a longer movement thus
increasing the fuel rate at the injector.
Before pulling down the device’s button, start the engine
without load to allow it to reach it’s highest engine speed.
Note: To avoid heavy engine damage and engine
overload, never operate with the device’s button
pulled down.
The engine’s output power is dependant upon the
position of the upper conical surface of the excess fuel
button in the gear cover. The shorter its insertion in the
gear cover, the more fuel arrives at the injector. The
longer its insertion in the gear cover, the less fuel arrives
at the injector.
Note: The unit’s output power with the correct
adjustment of the excess fuel device is factory
set. Do not alter its setting. However, if the
excess fuel device and or gear cover are
removed or replaced, the high rate of supplied
fuel at the injector must be readjusted on the test
bench.
Figure 5-8
Excess Fuel Start Device Button
If the excess fuel start device is activated, the engine,
without load, reaches the higher speed. The governor
pushes the injection pump’s control lever towards the
lower value of supplying fuel and the excess fuel start
device button returns to its initial position.
1
2
3
1. Conical surface of the excess fuel starting device
2. Yoke of the inner control lever
3. Pin of the fuel injection pump
Figure 5-9
TP-6137 5/03
Excess Fuel Start Device Button
Section 5 Fuel System
23
5.6 The Injection Pump’s Fuel
Starting Delivery Point
For proper engine operation, ensure the correct
adjustment of the fuel starting delivery point. As the fuel
pump timing is fixed, check or readjust it only when
altering engine speed, installing a new injection pump,
or replacing the camshaft or gear cover.
1. Move the engine towards the compression stroke.
2. Put a mark on the flywheel at the 5 o’clock position
with the piston that is before Top Dead Center
(TDC).
3. Remove the injection pump’s allen head screw and
sealing washer from the fuel pump body and install
in its place a drip tube with a sealing washer located
between the pump and the tube. See Figure 5-10.
4. To locate the injection pump’s fuel starting delivery
point, put the accelerator lever in the higher speed
position and keep the inner control lever in the
higher fuel rate position.
Note: In order for fuel to reach the injection pump,
perform this check with the fuel solenoid valve
and the electric fuel pump energized.
5. Engine stop condition. Move the engine in the
counterclockwise direction (as viewed from the
flywheel) and check the drip tube. Fuel will flow
freely and then cease.
6. Obtain the correct fuel starting delivery point when
the plunger has reached and closed the injection
pump’s allen head screw’s hole and only a drop of
fuel comes out from the tube every second. See
Figure 5-11.
Note: Fuel will flow from the pump immediately after
loosening the allen screw.
Figure 5-11 Fuel Drop
Figure 5-10 Drip Tube
24
Section 5 Fuel System
TP-6137 5/03
5.7 Fuel Pump Adjustment Timing
To obtain the correct adjustment timing of the fuel pump,
use a ruler and measure the distance between the mark
on the flywheel and the mark on the crankcase when the
plunger is in the fuel starting delivery point. See
Figure 5-12.
Acceptable values are between
40±2 mm (1.5748±0.0394 in.) for 3000 RPM units and
50±1 mm (1.968±0.0394 in.) for 3600 RPM unit.
5.8 Fuel Pump and Gear Cover
Installation
1. If replacing one of these parts, check the distance
between the fuel pump surface on the gear cover
and the roller tappet cam follower edge.
2. Measure the distance between the parts and add
the shim thickness. Total distance should be
between 57.5--59.1 mm (2.263--2.327 in.). See
Figure 5-13.
If this value is not obtained, readjust the fuel starting
delivery point by adding or removing shims between the
pump and the gear cover’s surface.
Every thickness of ±1/10 mm (0.0040 in.) under the
injection pump increases or decreases the distance
between the marks on the flywheel and crankcase by
±2 mm (±0.78 in.).
Adding or removing shims between the gear cover and
the fuel pump’s body decreases or increases the
distance between the fuel pump flange and the cam of
the camshaft. Adjust the starting delivery point so that
its value is within the above mentioned value.
Figure 5-13 Acceptable Distance
Note: The thickness of the fitted shims under the
injection pump is stamped on the front surface of
the pump in 1/10 mm (0.004 in.) (e.g. 15 indicates
1.5 mm (0.0600 in.) thickness).
Note: The value stamped on the pump is for factory
installed fuel pumps. Fuel pump or injection
timing modifications alter the thickness values.
Figure 5-12 Flywheel Mark
Figure 5-14 Stamp
TP-6137 5/03
Section 5 Fuel System
25
5.9 Bleeding the Fuel System
Bleed air from the fuel system to prevent starting failures
and/or erratic operation. One or more of the following
causes air to collect in the fuel system:
Procedure to Bleed the Fuel System
1. Loosen the vent screw. See Figure 5-15.
Engine-End View
1
D Operating the generator set until the fuel supply is
emptied.
D Developing air leaks in the suction side of the fuel
system.
D Replacing the fuel filter.
1. Vent screw
ADV-6652-
Figure 5-15 Vent Screw Location
2. Operate the generator set until fuel, free of air
bubbles, flows from the vent screw.
3. Tighten the screw.
Note: Wipe up all spilled diesel fuel after bleeding the
system. Wash hands after any contact with fuel
oil.
26
Section 5 Fuel System
TP-6137 5/03
5.10 Governor
1
7
2
1.
2.
3.
4.
5.
6.
7.
8.
3
4
5
8
6
Governor body
Pin
Spacer
Bridge
Spring retainer
Full speed spring
Idle speed spring
Cross slot nut
Figure 5-16 Governor Components
The centrifugal, mechanical governor keeps the engine
speed constant by automatically adjusting the amount
of fuel supplied to the engine according to changes in
the load. No regular service is required on the governor.
The factory adjusts the governor during run-in, and
further adjustment should not be needed unless poor
governor control develops after extended generator
usage.
Governor Construction and Function
The governor consists of two flyweights and a set of
springs that balance the centrifugal forces of the
governor flyweights.
TP-6137 5/03
The governor is installed at the crankshaft and turns with
similar speed. If the engine operates with a decreasing
load, the engine speed will increase. The centrifugal
force spreads the governor weights and its pin pushes
the tappet bolt of the inner control lever. It pivots on the
eccentric shaft so that the injection pump pin moves
towards the position for lower fuel supply rate. During
conditions with less fuel, the engine speed decreases,
the governor pin returns to its hole, and the inner control
lever moves the injection pump pin towards the position
for higher fuel supply rate to increase the engine speed.
Consequently, the engine speed has permanent
oscillations but these are so small that only a very
sensitive revolution meter could detect them.
Section 5 Fuel System
27
1
5. Screw the taplet bolt completely until it rests on the
inner control lever.
2
6. Insert a screwdriver between the flyweights and
force them apart to the maximum opening. See
Figure 5-19.
4
5
3
7. Turn the taplet bolt until it contacts the governor
pin.
Note: No play should be felt when pushing the inner
control lever with the hand.
7
8. Release the flyweights and turn the taplet bolt a half
turn further.
6
1.
2.
3.
4.
5.
6.
7.
Injection pump
Control lever
Taplet bolt
Inner retainer ring
Ratchet plate
Accelerator lever
Eccentric shaft
Figure 5-17 Speed Controller Shaft Assembly
Components
Governor and Speed Controller Shaft Adjustment
If the governor or the speed controller shaft has been
removed or tampered with, they need to be readjusted.
Figure 5-19 Taplet Bolt Position
9. Hold the taplet bolt in this position and tighten the
nut. See Figure 5-19.
10. Bend the lock plate and reassemble the cover plate
on the gear cover.
Figure 5-18 Cover Plate
1. Remove the governor cover plate on the gear
cover. See Figure 5-18.
2. Move the engine until the governor flyweights are
in the vertical position.
3. Keep the accelerator lever in the higher engine
speed position.
4. Open the lock plate of the taplet bolt and loosen the
nut.
28
Section 5 Fuel System
Note: It is essential for adequate engine operation to
obtain the correct adjustment between the taplet
bolt and the governor pin. The engine will go into
overspeed if a clearance exists between the
taplet bolt and the governor pin while a forced
contact produces an engine speed drop.
11. With the engine stopped, adjust both the cross
slotted nuts so that their upper surfaces are at the
same height as the governor bolt.
See
Figure 5-20.
12. Start the engine and check its speed.
TP-6137 5/03
13. If the engine speed needs modification, turn the
cross slotted nuts.
Accelerator Lever
The accelerator lever is fixed by its hole at the pin of the
eccentric shaft. The ratchet plate is installed with its slot
at the eccentric shaft pin and kept in place with an 8 mm
nut. As the ratchet plate spring is used as a buffer for
engine deceleration (it holds the accelerator lever in the
higher engine speed position), the correct adjustment
between the accelerator lever and the ratchet plate is
very important. Perform this adjustment leaving a half
notch of the plate visible. See Figure 5-21.
If an incorrect adjustment is achieved and more notches
are visible, a manual engine stop operation may be
obstructed because the accelerator lever touches the
lower stop notch on the crankcase without cutting off the
fuel supply at the engine. If no notch is visible, damage
to the speed controller shaft linkage may occur.
To relocate the ratchet plate and accelerator lever on the
speed controller shaft, hold the accelerator lever and
move the ratchet plate until its slot is against the speed
shaft pin. At this position, tighten the 8 mm nut.
Figure 5-20 Engine Speed Adjustment
Note: Tightening both cross slot nuts increases engine
speed because the axial movement of the
governor pin does not permit the control lever to
push the fuel pump pin in a position for lower fuel
supply.
Loosening both cross slot nuts decrease engine
speed because the governor pin pushes the
control lever towards the position for lower fuel
supply.
A half turn (180_) of both cross slot nuts generally
change the engine speed ±50 RPM.
Note: Keep the cross slotted nuts at least on the flat end
of the stud bolt. Otherwise the nuts self-securing
effect will not work. Normally, the stud bolt
protrudes out of the cross slotted nuts.
For larger speed variations, replace the governor
springs. Replace the cross slotted nuts whenever
unscrewing a nut.
Check every engine speed
modification in a controlled environment on a test bench
or with a revolution counter.
TP-6137 5/03
Figure 5-21 Ratchet Plate Notches
Section 5 Fuel System
29
Notes
30
Section 5 Fuel System
TP-6137 5/03
Section 6 Cooling System
6.1 Direct Water Cooled
In a direct seawater cooling system, the impeller pump
circulates the seawater around the cylinder and through
the cylinder head. A thermostat controls the cooling water
circuit temperature. Consult Figure 6-1 and the engine
operation manual for the cooling water circuit diagrams.
NOTICE
Saltwater damage. Saltwater quickly deteriorates metals.
Wipe up saltwater on and around the generator set and
remove salt deposits from metal surfaces.
6
8
7
9
10
11
3
5
4
2
1
TP-6134-
1.
2.
3.
4.
5.
6.
Intake strainer
Seacock
Seawater strainer
Engine-driven seawater pump
Oil exchanger
Alternator water cooler
Figure 6-1
TP-6137 5/03
7.
8.
9.
10.
11.
Zinc plug
Exhaust manifold elbow
Exhaust hose
Silencer (customer supplied)
Outlet flapper (exhaust/water discharge)
Direct Water-Cooled Cooling System (3.5EFOZ and 4EOZ Models)
Section 6 Cooling System
31
6.2 Thermostat
3. Remove the impeller.
In a direct seawater cooling system, the impeller pump
circulates the seawater around the cylinder and through
the cylinder head. A thermostat controls the cooling water
circuit temperature.
See Figure 6-2 for thermostat
settings. Consult the engine operation manual for the
thermostat cleaning and checking procedures.
4. Inspect the impeller for damaged, cracked, broken,
missing or flattened vanes. The impeller vanes
should be straight and flexible. See Figure 6-4.
Replace the impeller if it is damaged.
1
2
Thermostat Settings
(Max. Temp.)
Seawater
50_C (122_F)
Freshwater
75_C (167_F)
Figure 6-2
3
Thermostat Settings
6.3 Seawater Pump and Impeller
TP-6053
The gear driven seawater pump is located on the
alternator side of the generator set. Check and change
the seawater pump impeller at the interval specified in
the service schedule. Follow the instructions included
with the impeller kit. If the instructions are not included
with the kit, use the following procedure:
Impeller Inspection and Replacement Procedure:
1. Close the seacock.
2. Remove the seawater pump coverplate.
Figure 6-3.
See
1
1. Flattened vane
2. Crack
3. Broken vane
Figure 6-4
Worn Impeller
5. Lubricate the impeller with soapy water before
installation.
6. Install the impeller.
Note: During installation push and rotate the
impeller in the same direction as the engine
rotation until it is thoroughly seated in the
impeller housing.
7. Inspect the coverplate and gasket for corrosion
and/or damage.
Replace components as
necessary.
8. Lubricate the gasket with silicon grease and attach
the gasket and coverplate to the seawater pump
housing.
2
9. Open the seacock.
3
4
10. Start the generator set and check for leaks.
5
6
1. Seawater pump
2. Coverplate
3. Gasket
Figure 6-3
32
TP-6053
4. Impeller
5. Bearing
6. Housing
11. Stop the generator set and repair leaks or replace
damaged or worn components.
m:sm:003:008
Seawater Pump, Typical
Section 6 Cooling System
TP-6137 5/03
6.4 Siphon Break
A siphon break prevents seawater entry into the
generator set’s engine when the engine exhaust
manifold outlet is less than 230 mm (9 in.) above the
waterline of a fully loaded, docked or stationary craft.
The siphon break may malfunction when the generator
set operates while the craft is in contaminated waters or
saltwater. Use the following procedure to inspect the
siphon break at the intervals listed in the service
schedule.
6. Install the reed valve into the mounting base with
the valve downward. See Figure 6-5, item 3.
7. Install and only finger tighten the retaining cap. Do
not overtighten it.
2
3
Siphon Break Inspection
1
1. Stop the generator set.
2. Remove the retaining cap and remove the reed
valve for inspection. See Figure 6-5.
3. Use a mild detergent to remove residue and
oxidation from the reed valve.
1. Mounting base
2. Retaining cap
3. Reed valve
Figure 6-5
TP-5856-3
Siphon Break
m:sm:003:007
4. Clear blockages from the reed valve opening.
5. Replace the siphon break if the reed valve is
cracked or if the reed valve material has hardened
or deteriorated.
TP-6137 5/03
Section 6 Cooling System
33
4
3
Waterline
14
1
5
9
2
15
6
13
10
7
11
12
1. Silencer vertical lift 1.2 m (4 ft.) max.
2. Exhaust outlet distance from the waterline. Use a siphon break if
the exhaust mixer outlet is located less than 23 cm (9 in.) above
the waterline.
3. Siphon break distance above waterline 30.5 cm (1 ft.) min.
4. Siphon break
5. Exhaust outlet
6. Seawater strainer
7. Seacock
Figure 6-6
8.
9.
10.
11.
12.
13.
14.
15.
8
TP-5586-3
Intake strainer
Gear-driven seawater pump
Exhaust hose pitch 1.3 cm per 30.5 cm (0.5 in. per ft.) min.
Water lock (optional)
Silencer distance from exhaust outlet 3 m (10 ft.) max.
Silencer (customer supplied)
Exhaust hose pitch 1.3 cm per 30.5 cm (0.5 in. per ft.) min.
Exhaust outlet distance above the waterline 10 cm (4 in.) min.
Siphon Break, Plastic “U” Type
Note: Do not locate the siphon break directly above the
generator set.
34
Section 6 Cooling System
TP-6137 5/03
6.5 Anticorrosion Zinc Anode
Anticorrosion Zinc Anode Replacement
The generator set includes an anticorrosion zinc anode
(plug) to prevent electrolytic corrosion by seawater.
Check and replace the anticorrosion zinc anode at
intervals recommended in the service schedule.
Depending upon operating conditions and seawater
properties, the anticorrosion zinc anode may require
more frequent replacement. See Figure 6-7 for the
location and use the following procedure.
New Anode
Dimensions mm (in.)
Replace When Percent
of Zinc Remaining Is:
10 (0.39) x 20 (0.79)
<50% of
length/diameter
Figure 6-8
Anticorrosion Zinc Anode (Plug)
Measurements
1
2
TP-5586-3
3
1
Figure 6-9
2
TP-6134
1. Seawater pump
2. Water-cooled alternator
3. Anticorrosion zinc anode (seawater drain)
Figure 6-7
1. Diameter: 9.5 mm (0.375 in.)
2. Length: 19.05 mm (0.75 in.)
Anticorrosion Zinc Anode
Anticorrosion Zinc Anode (Plug)
4. If necessary, cut the anticorrosion zinc to the
correct length. Clean the threaded hole of the
engine and coat the threads of the anticorrosion
zinc anode (plug) with pipe sealant suitable for
marine applications. Install the anticorrosion zinc
anode into the threaded hole.
5. Close the petcock on the engine and open the
seacock.
6. Refill the seawater cooling system.
Anticorrosion Zinc Anode Replacement
1. With the generator set cooled, close the seacock,
open the petcock on the engine, and drain the
coolant into a suitable container.
2. Remove the anticorrosion zinc anode (plug).
7. Start the generator set and check for leaks at the
anticorrosion zinc anode location. The pump is
operating if the cooling water flows from the
exhaust outlet. If water is not discharging at the
exhaust outlet, see Section 2, Prestart Checklist,
Seawater Pump Priming in the operation manual.
3. Use a wire brush to remove the loose corrosion on
the anticorrosion zinc anode. Replace the anode
according to Figure 6-8 and Figure 6-9.
TP-6137 5/03
Section 6 Cooling System
35
Notes
36
Section 6 Cooling System
TP-6137 5/03
Section 7 Troubleshooting
7.1 General
When troubles occur, do not overlook simple causes.
Improper fuel or an empty fuel tank could cause a
starting problem. The following charts indicates some
common problems. Consult the safety precaution
section of this manual before servicing the generator
set. If the procedures in this manual do not explain how
Problem
Unit will not crank
Unit cranks but will not start
Engine starts but does not
continue to run after start switch
is released
TP-6137 5/03
to correct the problem, bring the generator set to an
authorized Kohler distributor or dealer.
Tell the
distributor or dealer exactly what happened when the
problem occurred and any adjustments made to the
generator set.
Possible Cause
Corrective Action
Weak or dead battery.
Recharge or replace the battery.
Reversed or poor battery connections.
Poor ground.
Check the connections.
Circuit breaker tripped in the controller.
Reset the circuit breaker.
Inoperative start/stop switch.
Check function; replace as necessary.
Inoperative starter solenoid.
Check the starter solenoid and wiring.
Replace as necessary.
Inoperative starter.
Attempt starting by direct connection to the
battery. Repair/replace as necessary.
Fault shutdown.
Check the shutdown switches.
Out of fuel.
Replenish fuel supply.
Fuel shut-off valve closed.
Open the fuel shut-off valve.
Inoperative fuel feed pump.
Replace the fuel feed pump.
Clogged fuel filter.
Service the fuel filter element.
Air in the fuel system.
Bleed the air.
Water or dirt in the fuel system.
Drain and flush the fuel system.
Dirty or faulty fuel injectors.
Contact your local Kohler generator set
distributor for service.
Incorrect compression.
Contact your local Kohler generator set
distributor for service.
Incorrect fuel type.
Use the correct fuel type. Consult the fuel
supplier.
Incorrect lube oil type for ambient
temperature.
Use the correct lube oil.
Faulty fuel solenoid.
Replace the solenoid.
Air intake screen clogged.
Clean or replace.
Faulty ground (--) connection.
Clean and retighten.
Weak or dead battery.
Recharge or replace.
Engine malfunction.
Contact your local Kohler generator set
distributor for service.
Inoperative high exhaust temperature
(HET), low oil pressure (LOP), and/or high
water temperature (HWT) shutdown
switch(es).
Check the HET, LOP and/or HWT
shutdown switch(es).
No/low oil pressure.
Check the oil pressure and pump.
No generator output voltage.
Check the AC voltage.
Section 7 Troubleshooting
37
Problem
Stops suddenly
Operates erratically
Engine knocks
Loses power
38
Section 7 Troubleshooting
Possible Cause
Corrective Action
Out of fuel.
Replenish fuel supply.
Air intake clogged.
Service the air intake screen.
Circuit breaker tripped in the controller.
Reset the circuit breaker.
Inoperative seawater pump impeller.
Replace the impeller.
Clogged seawater strainer.
Clean the strainer.
Fuel line restricted.
Check the fuel lines and the fuel tank.
Dirty fuel filter.
Clean the fuel filter.
No/low oil pressure.
Check the oil pressure and pump.
High temperature.
Check the engine cooling system.
Inoperative high exhaust temperature
(HET), low oil pressure (LOP), and/or high
water temperature (HWT) shutdown
switch(es).
Check the HET, LOP, and HWT shutdown
switch(es).
Loss of AC output.
Contact your local Kohler generator set
distributor for service.
Air intake clogged.
Service the air intake screen.
Stale or bad fuel.
Replace the fuel.
Clogged fuel filter.
Service the fuel filter.
Vent in fuel tank cap obstructed.
Clean the cap in solvent; blow dry.
Water, dirt, or air in the fuel system.
Drain, flush, fill, and bleed air in the
system.
Dirty or faulty injectors.
Contact your local Kohler generator set
distributor for service.
Faulty governor link.
Contact your local Kohler generator set
distributor for service.
Inoperative fuel feed pump.
Replace the fuel feed pump.
Incorrect valve clearance.
Contact your local Kohler generator set
distributor for service.
Inoperative valve spring.
Contact your local Kohler generator set
distributor for service.
Incorrect compression.
Contact your local Kohler generator set
distributor for service.
Improper fuel type.
Use proper fuel type; consult fuel supplier.
Improper fuel injection timing.
Contact your local Kohler generator set
distributor for service.
Improper cylinder top clearance.
Contact your local Kohler generator set
distributor for service.
Inoperative piston or piston ring.
Contact your local Kohler generator set
distributor for service.
Inoperative crankshaft bearing or piston
pin bearing.
Contact your local Kohler generator set
distributor for service.
Improper valve clearance piston pin
bearing.
Contact your local Kohler generator set
distributor for service.
Air in injectors.
Bleed air.
Air intake clogged.
Service the air intake screen.
Bad or stale fuel.
Replace the fuel.
Engine not operating at rated RPM.
Check the governor.
Governor adjustments incorrect.
Adjust the governor.
TP-6137 5/03
Problem
Loses power (continued)
Overheats
Engine emits black or gray
exhaust smoke.
Low lube oil pressure
High lube oil consumption
TP-6137 5/03
Possible Cause
Corrective Action
Carbon build up.
Clean the carbon from the cylinder head.
Improper cooling.
Inspect the cooling system.
Fuel line restricted.
Check the fuel lines.
Engine overloaded.
Reduce the load.
Dirty fuel filter.
Service the fuel filter.
Improper valve clearance.
Contact your local Kohler generator set
distributor for service.
Dirty or faulty injectors.
Contact your local Kohler generator set
distributor for service.
Incorrect fuel injection timing.
Contact your local Kohler generator set
distributor for service.
Improper engine compression.
Contact your local Kohler generator set
distributor for service.
Vent in fuel tank obstructed.
Clean the cap in solvent; blow dry.
Improper cooling.
Check the intake and outlet openings.
Check the raw water strainer.
Inoperative thermostat.
Replace the thermostat.
Air intake clogged.
Service the air intake screen.
Engine overloaded.
Reduce the load.
Cooling system need flushing.
Flush the cooling system.
Inoperative temperature switches.
Replace shutdown switches.
Cooling water leaks from the water
passage.
Check the water passage.
Incorrect fuel type.
Use correct fuel.
Clogged or dirty air intake screen.
Service the air intake screen.
Inoperative injection pump.
Contact your local Kohler generator set
distributor for service.
Faulty injectors.
Contact your local Kohler generator set
distributor for service.
Incorrect fuel injection timing.
Contact your local Kohler generator set
distributor for service.
Incorrect valve clearance.
Contact your local Kohler generator set
distributor for service.
Lube oil level too high.
Drain out surplus.
Incorrect lube oil.
Use correct viscosity oil.
Low lube oil level.
Add lube oil.
Incorrect lube oil viscosity.
Drain; fill with correct lube oil.
Inoperative lube oil pump.
Contact your local Kohler generator set
distributor for service.
Inoperative oil pressure switch.
Replace the shutdown switch.
Too light viscosity oil.
Use correct viscosity lube oil.
Oil leaks.
Check for leaks in lines, around gasket,
and drain plug.
Incorrect oil type.
Use correct viscosity lube oil.
Clogged breather system.
Clean the breather system.
Inoperative piston ring, piston, cylinder
block, valve guide, and seat.
Contact your local Kohler generator set
distributor for service.
Section 7 Troubleshooting
39
Problem
High fuel consumption
Unit is noisy
Abnormal noise
Battery will not charge
Starter does not work properly
Starter cranks slowly
40
Section 7 Troubleshooting
Possible Cause
Corrective Action
Incorrect fuel type.
Use correct fuel.
Clogged or dirty air intake screen.
Service the air intake screen.
Engine overloaded.
Reduce the load.
Incorrect valve clearance.
Contact your local Kohler generator set
distributor for service.
Incorrect fuel injection timing.
Contact your local Kohler generator set
distributor for service.
Low engine temperature.
Check the thermostat.
Incorrect compression.
Contact your local Kohler generator set
distributor for service.
Fuel leakage.
Check for leaks at the fuel tank, lines, and
engine fuel system.
Exhaust system leak.
Check the exhaust system.
Exhaust system not securely installed.
Check for loose parts.
Broken or damaged vibromounts.
Check the vibromounts.
No installation clearance. Units hits the
craft structure or compartment.
Check the clearance.
No compartment sound insulation.
Install approved insulation.
Excessive vibration.
Contact your local Kohler generator set
distributor for service.
Loose or vibrating sheet metal.
Tighten all bolts.
Worn or inoperative bearing or gear.
Contact your local Kohler generator set
distributor for service.
Loose bolt or screw.
Tighten the hardware.
Low lube oil level.
Add lube oil.
Loose or corroded connections.
Clean and tighten connections.
Sulfated or worn battery connections.
Check the electrolyte level and specific
gravity (batteries with filler caps only).
Inoperative battery charging system.
Check the charging system.
Battery charging fuse blown.
Replace the fuse. If the fuse blows again,
contact your local Kohler generator set
distributor for service.
Loosened or corroded connections.
Clean and tighten the loose connections.
Low battery output power.
Check the electrolyte level and specific
gravity (batteries with filler caps only).
Check battery voltage.
Inoperative starter solenoid.
Replace the starter solenoid.
Inoperative start/stop switch.
Replace the switch.
Inoperative wiring.
Check the wiring.
Low battery output.
Check the electrolyte level and specific
gravity (batteries with filler caps only).
Too heavy viscosity lube oil.
Use proper viscosity oil.
Loosened or corroded wiring.
Clean and tighten loose connections.
High starter current draw.
Rebuild or replace the starter.
Battery cable undersized.
See the installation manual.
TP-6137 5/03
Section 8 Controller Troubleshooting
Starter motor
K1 relay protects the
starter motor in the
event of an improper
engine start.
K2 relay energizes
the fuel pump (FP)
and the fuel solenoid
(FS).
The electric fuel
pump (FP) refills the
fuel supply line.
If the fuel solenoid
(FS) is energized, fuel
flows to the injection
pump.
Engine battery
charger regulator.
The generator set
starts. The starting
cycle is completed.
The low oil pressure
switch (LOP) contacts
open.
The generator
set starts.
Figure 8-1
TP-6137 5/03
Generator Set Starting Cycle
Section 8 Controller Troubleshooting
41
8.1 General
8.1.1
The following section covers the controller
troubleshooting procedure. Refer to Figure 8-2 to
identify the controller components.
After pressing the On/Off switch on the control panel
(local or remote), two green LEDs and one red LED (oil
engine) light. This operation energizes the control panel
and permits DC to the K2 relay. This in turn energizes
the fuel solenoid (FS) and the fuel pump (FP) because
the normally open contacts of the K2 relay close.
1
2
3
8.1.2
4
6
7
12
11
10
8.1.3
VR
F2
BH1
9
DC supplied to the starter is interrupted, every starting
operation is eliminated.
F1
K2
LO TB1
K3
P1
P3
GRD
15
1.
2.
3.
4.
5.
6.
7.
8.
9.
Control panel
Hourmeter
On/off switch
Start switch
Green/red oil pressure
LEDs
Green/red engine water
temperature LEDs
Green/red exhaust
temperature LEDs
Control box
25 amp fuse
Figure 8-2
42
14
16
Run
After reaching correct engine and generator set
performance, the two generator set wires marked
10 and 11 energize the K3 relay (AC crank disconnect)
that opens its normally closed contacts.
8
K1
Start
Press the START switch (local or remote) the K1 relay
energizes. The normally open K1 contacts close
allowing DC to the normally open contacts of the starter
motor’s solenoid (S). The energized starter starts the
generator set’s engine.
5
13
On/Off Switch
17
10.
11.
12.
13.
14.
15.
16.
17.
18
10 amp fuse
Bridge rectifier
K1 relay
K2 relay
K3 relay
Engine voltage regulator
Electrical connection plate
Harness control box (to
engine connector)
18. Harness control box (to STD
panel connector)
Controller Internal Components
Section 8 Controller Troubleshooting
The generator set wires marked C1 and C2 connect at
the capacitor supplying AC. As it gives or receives
current in accordance with variable loads, its capacity
changes to hold the correct AC voltage value.
When good engine oil pressure operation is reached,
the normally closed contacts of the low oil pressure
(LOP) switch close. The red LED on the control panel
cuts off and the green LED lights.
If all three green LEDs on the control panel are lit at the
same time, good engine performance is achieved and
AC is supplied to the windings L1, L2, L3 and L4.
8.1.4
On/Off Switch (Stop)
If the On/Off switch (local or remote) is repressed, the K2
relay deenergizes. The fuel solenoid (FS) and fuel
pump (FP) do not receive DC, the normally open K2
contacts reopen and the engine stops.
TP-6137 5/03
8.2 Engine Safety Shutdown
Switches
8.2.2
8.2.1
If high engine water temperature or exhaust gas
temperature is encountered, the normally open contacts
of the HCHT and HET switch close. DC travels to
connection 3 or 4 on the control panel deenergizing the
K2 relay.
Low Oil Pressure (LOP) Shutdown
If the oil pressure drops while operating the engine, the
normally closed low oil pressure (LOP) switch contacts
close. DC travels to connection 5 on the control panel
and the K2 relay is deenergized.
DC does not travel to the fuel solenoid (FS) or to the fuel
pump (FP) and the engine stops. The red oil pressure
LED on the control panel lights immediately while the
green oil pressure LED cuts off.
Check and correct the generator set fault.
TP-6137 5/03
High Water Temperature and High
Exhaust Temperature Shutdown
Switch
DC does not travel to the fuel solenoid (FS) or to the fuel
pump (FP) and the engine stops. The red LED of the
high water temperature and/or high exhaust gas
temperature light immediately while the corresponding
green LED cuts off.
Check and correct the generator set fault.
Section 8 Controller Troubleshooting
43
1
2
3
5
6
7
4
8
1.
2.
3.
4.
5.
6.
7.
8.
Control panel
Connector (to STD control panel connector)
0.63 amp fuse
J3 connector (to control panel)
P5 connector (to remote panel harness)
P6 connector (to remote start/stop switch connector)
J6 remote start/stop switch connector
Remote start/stop switch
Figure 8-3
44
8
Control Panel
Section 8 Controller Troubleshooting
TP-6137 5/03
8.3 Operation Sequence
Use the following controller operation sequence to help
localize and control possible inconveniences. Follow
the wiring diagram sequence shown in Section 10. If a
repair is needed, be sure to disconnect the battery.
Consult the safety precautions in the beginning of this
manual.
3.5EFOZ/4EOZ Kohler generator
starting operation.
By the operator.
By the separate control.
Push the ON/OFF switch.
The panel control energizes.
Push the START switch.
The relay (K1) is energized.
The relay (K2) is energized.
The starter motor solenoid (S) is
energized.
The battery charging voltage
regulator (VR) is excited.
The electric fuel pump (FP) is
energized.
The stop solenoid (FS) is energized
and opens. Fuel flows to the pump.
AC is supplied for the load and
for the static exiting circuit.
The unit operates.
AC energizes the relay (K3) that
disconnects the starter.
The engine alternator charges
the battery.
The relay (K1) is deenergized.
Release the START switch. The
generator set is operating
because the relay (K2) is
energized by the control panel.
Figure 8-4
TP-6137 5/03
The engine speed opens the low
oil pressure switch (LOP)
contacts and avoids stopping the
engine.
The unit operates because the
High Cylinder Head Temperature
(HCHT) and High Exhaust
Temperature (HET) contacts that
are normally opened, are still
opened together with the low oil
pressure switch (LOP) contacts.
Starting Operation
Section 8 Controller Troubleshooting
45
4EOZ/3.5EFOZ Kohler generator
stopping operation.
The unit stops due to High
Cylinder Head Temperature
(HCHT) or High Exhaust
Temperature (HET) condition.
The operator stops the unit (local
or remote).
The unit stops due to a Low Oil
Pressure (LOP) condition.
The high temperature contacts
deenergizes the relay (K2).
Push the ON/OFF switch.
The low oil pressure
deenergizes the relay (K2).
The electric fuel pump (FP) and
the stop solenoid (FS) are
deenergized and the unit stops.
The relay (K2) is deenergized.
The electric fuel pump (FP) and
the stop solenoid (FS) are
deenergized and the unit stops.
Check the unit for causes of the
high temperature failure.
The electric fuel pump (FP) and
the stop solenoid (FS) are
deenergized.
Check the unit for causes of the
low oil pressure failure.
The unit stops. Release the
ON/OFF switch.
Figure 8-5
46
Stopping Operation
Section 8 Controller Troubleshooting
TP-6137 5/03
8.4 Troubleshooting
Use the following flowcharts as an aid in troubleshooting
the main control panel and the entire generator set. If
the prescribed remedy does not correct the problem,
replace the control panel.
Consult the safety
precautions in the beginning of this manual.
Push the on/off switch
(local or remote).
Are the two green LEDs and
the red LED (oil pressure) lit
on the control panel?
Yes
Does the
engine
crank?
Push the start switch (local
or remote).
No
Yes
Go to A
(next
page).
No
Is the 25 amp fuse okay?
No
Is the 12 DC voltage present
on the coil of the K1 relay?
Yes
No
Yes
Is current present on the
terminals of the solenoid (S)
of the starter engine?
Change
the fuse.
No
D Check the 0.63 amp fuse
on the control panel.
D Check the conditions of the
battery connections.
D Check the conditions of the
P1 connections (7-GND).
D Check the conditions of the
TB1 connections (7-GND).
D Check the conditions of the
P3 connections (7-GND).
D Check the conditions of the
1-2 connections on the
terminal board of the
control panel.
D Are these checks okay?
D Check the conditions of the
K1 connections (5-GND).
D Check the conditions of the
K3 connections (5).
D Check the conditions of the
TB1 connections (5-GND).
D Check the conditions of the
P3 connections (5-GND).
D Check the conditions of the
2-6 connections on the
terminal board of the
control panel.
D Reset
the
failed
connections to energize
the coil of the K1 relay.
D Check the conditions of the
S connections (9-GND).
D Check the conditions of the
P1 connections (9-GND).
D Check the conditions of the
TB1 connections (9-GND).
D Check the conditions of the
K1 connections (7-9).
D Check the conditions of the
TB1 connections (7-GND).
D Reset
the
failed
connections to energize
the coil of the solenoid (S)
on the starter motor.
Yes
Yes
Change the control panel.
Change the control panel.
No
Is the current present on the
contacts of the S solenoid
(starter motor side)?
Yes
Change the starter motor.
Figure 8-6
TP-6137 5/03
Troubleshooting Relay Controller Control Panel (1 of 4)
Section 8 Controller Troubleshooting
47
Does the engine crank?
A
Go to B
(next
page).
Yes
No
Is the 12 DC voltage present
on the K2 relay coil?
No
D Check the conditions of the
K2 connections (6-GND).
D Check the conditions of the
TB1 connections (6-GND).
D Check the conditions of the
P3 connections (6-GND).
D Check the conditions of the
2-7 connections on the
terminal board of the
control panel.
D Reset the failed
connections to energize
the K2 relay.
Figure 8-7
48
Yes
Is current present on the coils
of the fuel pump (FP) and the
cut-off solenoid (FS)?
No
D Check the conditions of the
FP connections (8-GND).
D Check the conditions of the
FS connections (8-GND).
D Check the conditions of the
P1 connections (8-GND).
D Check the conditions of the
TB1 connections (8-GND).
D Check the continuity of the
K2 connections (7-8).
D Reset the failed
connections to energize
the fuel pump (FP) and
the cut-off solenoid (FS).
Yes
Change the fuel pump (FP)
or the cut-off solenoid (FS) if
these are inoperative.
Troubleshooting Relay Controller Control Panel (2 of 4)
Section 8 Controller Troubleshooting
TP-6137 5/03
B
After the start switch is
release, is the engine
operating?
Yes
No
Can you stop the engine
using the on/off switch?
Yes
Generator set checks out
okay.
No
Is 12 DC voltage present on
the K2 relay coil?
Are the 30-87 terminals of
the K2 relay open?
No
Change the K2 relay.
No
Is any red LEDs (LOP, HET,
HCHT) lit?
No
Yes
D LOP—Check the oil level,
the oil pressure, and the
alarm switch.
D HET and HCHT—Check if
water flows out of the
exhaust manifold and if the
two alarm switches work.
D Are these checks okay?
Change the control panel.
Yes
Change the control panel.
Figure 8-8
TP-6137 5/03
Troubleshooting Relay Controller Control Panel (3 of 4)
Section 8 Controller Troubleshooting
49
C
If there AC output when the
on/off switch is held and the
unit is running?
Yes
Is AC output at the correct
voltage (e.g. 120 volts AC)?
No
Yes
Is 12 volts DC present on
the coil of the K3 relay?
No
Yes
No
Is AC voltage present on the
capacitor (CAP) connections
(C1--C2)? See Section 11.
Yes
Check the stator and the
rotor. See Section 9.
Are the K3 relay contacts
opened (30--87a)?
Yes
No
Is the 10-amp fuse (F2)
okay?
Yes
No
Change the K3 relay.
Check the stator winding
connections. See Section 9
and Section 11.
Are the CAP connections
(C1--C2) okay?
No
Reset the connections.
Yes
Change the fuse (F2).
D Charge the capacitor to
reset
the
magnetic
retentivity.
D Check the performance of
the capacitor.
D Check if the diodes
(D4--D5) work correctly.
D Check if the rotor works
correctly.
D Check if the stator works
correctly.
Is the bridge rectifier (BR1)
okay?
No
Change the bridge rectifier.
Note: Follow the procedures
included in the Engine
Service Manual and
Section 9 of this
manual.
Yes
D Check the K3 connection
condition.
D Check the BRI connection
condition (10-11).
D Check the TB1 connection
condition (10-11).
D Are these checks okay?
Yes
Check the stator winding
(10--11).
Note: See Section 9.
Figure 8-9
50
Troubleshooting Relay Controller Control Panel (4 of 4)
Section 8 Controller Troubleshooting
TP-6137 5/03
Section 9 Generator Troubleshooting
9.1 General
Before beginning the following troubleshooting
procedures, read all the safety precautions at the
beginning of this manual. The following tests include
additional safety precautions; OBSERVE THESE
PRECAUTIONS!
WARNING
Hazardous voltage. Moving rotor.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death. Electrocution is possible
whenever electricity is present. Open the main circuit
breakers of all power sources before servicing the equipment.
Configure the installation to electrically ground the generator
set, transfer switch, and related equipment and electrical
circuits to comply with applicable codes and standards. Never
contact electrical leads or appliances when standing in water
or on wet ground because these conditions increase the risk of
electrocution.
High voltage test. Hazardous voltage can cause severe
injury or death. Follow the instructions of the test equipment
manufacturer when performing high-voltage tests on the rotor
or stator. An improper test procedure can damage equipment
or lead to generator set failure.
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily injury
and/or equipment damage.
Do not contact electrical
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
Handling the capacitor. Hazardous voltage can cause
severe injury or death.
Electrical shock results from
touching the charged capacitor terminals. Discharge the
capacitor by shorting the terminals together.
(Capacitor-excited models only)
AC Output
STATOR
Residual magnetism of the
rotor starts the process
CAPACITOR
ROTOR
RECTIFIER
Automatic Exciter
Figure 9-1
TP-6137 5/03
Alternator and Exciter Diagram
Section 9 Generator Troubleshooting
51
9.2 Theory of Operation,
Brushless Generator Sets
9.3.1
These generator sets use a two-pole, revolving-field
alternator.
Always check the generator set’s output voltage at the
nominal speed rotation. The alternators are preset at
the factory to supply voltage slightly higher (5--6%) than
the voltage at the nominal engine speed rotation.
The generator set’s alternator is a “brushless” design,
utilizing capacitor excitation. This system does not use
brushes, slip rings, or a voltage regulator. In order to
obtain generator output, the rotor (field) must be
energized and moving. The rotor is directly connected
to the flywheel by a tapered coupling. A ball bearing,
located in the stator frame, holds the rear portion of the
rotor. The engine moves the rotor (field) past the stator
main winding, which induces an AC voltage across the
stator leads. The rotor core holds enough residual
magnetism to produce low AC output from the stator
during start-up. As the generator speed increases, the
stator auxiliary winding connected to the capacitor
(leads C1 and C2) induces a voltage on the rotor field
winding. A diode on the rotor rectifies the voltage to
produce DC field current in the rotor. AC output is drawn
from the stator winding that supplied 12 VDC to the K3
relay (start protection) and feed the capacitor. As
current in the stator main winding increases with the
load, additional current is induced in the rotor field to
supplement the current being supplied by the stator
auxiliary winding.
Voltage Rating and Rotation
Speed
The difference between the engine rotation and the
nominal one can cause slight deviation of output
voltage. Keep in mind that the output voltage varies
proportionally to the rotation speed. If requiring output
voltage correction of the generator set at a defined
rotation, vary the capacity of the excitation capacitor. By
increasing or decreasing the capacity value of the
capacitor, voltage changes.
Note: Do not operate the generator set with voltages
that deviate more than 10% of the nominal speed
rotation.
9.3.2
Bearing
The alternator’s rear bearings are self-lubricating and
do not require maintenance for 10,000 operating hours.
Replace the rear bearings during a complete engine
overhaul.
The generator cannot be disconnected or removed from
the engine as a single unit.
9.3 Output Voltage and Frequency.
The 3.5EFOZ model generator set supplies 230 volts at
50 Hz while the 4EOZ model supplies 120/240 volts at
60 Hz in accordance with the preselected winding
connection and engine speed.
52
Section 9 Generator Troubleshooting
TP-6137 5/03
9.4 Rotor Test
The two-pole rotor creates the magnetic field needed to
raise the alternating current in the stator windings.
Before testing, inspect the rotor for visible damage to the
pole shoes, insulation, and exposed coil windings.
Check the rotor bearings for noisy operation, excessive
wear, and heat discoloration. Replace or repair these
components if any of the above conditions exist.
Procedure to test the rotor’s continuity.
1. Using an Ohmmeter test, check if the rotor winding
is opened. See Figure 9-3. If an accurate
ohmmeter is not available, check the circuit’s
continuity using a 12 VDC battery and a suitable
lamp. See Figure 9-4. Replace the rotor if it is
grounded, has an opened or short circuit.
Procedure to test the rotor’s insulation.
1. Disconnect the two rotor field diodes (D4 and D5).
See the wiring diagrams in Section 11.
2. Using a Megger set at 500 volts DC, check the
winding insulation resistance value to ground.
Check every part isolated from the others. See
Figure 9-2 Normally, windings with a resistance
value to ground greater than 1 MOhm are
considered good. If resistance is lower than 1
MOhm, replace the rotor.
Figure 9-2
TP-6137 5/03
Figure 9-3
Rotor Continuity Test with Ohmmeter
Figure 9-4
Rotor Continuity Test with AC Test Lamp
Rotor Insulation Test
Section 9 Generator Troubleshooting
53
Procedure to test the rotor’s resistance.
1. To test the rotor resistance, use a Wheatstone
bridge. See Figure 9-5. See Figure 9-6 for
resistance values.
Diode
Positive
Varistor
Figure 9-7
Field Diodes and Varistors Test
Failed Diodes Replacement
Figure 9-5
The rectifier assemblies are two sets of diodes and two
varistors, one for each rotor winding. Take care to
ensure that each diode is installed with the correct
polarity:
Rotor Resistance Test
Model
Resistance
in Ohms at 20_ C (68 _ F)
4EOZ (60 Hz)
2.57 ±10%
3.5EFOZ (50 Hz)
2.57 ±10%
Figure 9-6
Rotor Resistance Values
9.5 Field Diode Test
Check the rotor’s field diodes using a multimeter.
Disconnect the field diodes from the rotor and check the
forward and reverse resistance.
A good diode
performance is indicated with a very high resistance in
the reverse direction and a low resistance in the forward
direction. See Figure 9-7. A failed diode gives a full
deflection reading in both directions with the ohmmeter
on 10,000 Ohms or an infinity reading in both directions.
54
Section 9 Generator Troubleshooting
1. Check that the arrow on the diode surface direct
towards the fixing plate.
2. Check that the wire end with the eye terminal is
located between the diode and the fixing plate. The
other winding end must be welded at the upper part
of the diode.
3. While fitting the diodes at the plate, carefully
tighten the nuts to ensure good mechanical and
electrical contacts.
Surge Suppressor
The surge suppressor is a metal-oxide varistor shunted
to the field diodes to prevent high transient reverse
voltages in the field windings thus damaging the diodes.
The varistor is not polarized and shows, on a standard
ohmmeter, a virtually infinitive reading in both directions.
See Figure 9-7. If it is defective, normally a visible
inspection shows burning signs, it gives a full deflection
reading (short circuit).
TP-6137 5/03
9.6 Stator Test
1
2 3 4 10 11 C1 C2
Stator Insulation, Continuity, and Winding
Resistance Test
1. Disconnect the generator set’s AC output leads
from the control box.
Note: Refer to the Wiring Diagrams in Section 11 and
Figure 9-8 for output lead coding.
2. Check the windings insulation resistance to
ground.
Note: Remember that while checking, isolate each part
from the others.
3. Use a Megger set at 500 volts DC. If winding
resistance values to ground is ≥ 1 MOhm, consider
the insulation good. If the resistance is lower than
1 MOhm, replace the stator.
4. Using an ohmmeter, test for an open circuit in the
stator winding.
1 2 10 11 C1 C2
60 Hz
Note: If an accurate ohmmeter is unavailable, check
the circuit’s continuity using a 12 volt DC battery
and a suitable lamp.
5. Replace the stator if it has an open or short circuit in
the windings.
Note: Some generators have ground connections to
the frame (to ground), check the Wiring Diagrams
in Section 11.
6. Using a Kelvin bridge or an accurate
microhmmeter, test the resistance of each stator
windings and compare the resistances obtained.
See Figure 9-9. All windings of equal output
voltage should indicate about the same resistance.
An unusually low reading indicates a short circuit
while a high reading indicates an open circuit.
50 Hz
7. If an open or short circuit exists, replace the stator.
Figure 9-8
Stator Windings
Resistance in Ohms at 20_ C (68_ F)
Stator Leads
1--2
Model
4EOZ (60 Hz)
3.5EFOZ (50 Hz)
Figure 9-9
TP-6137 5/03
1--2
3--4
C1--C2
10--11
0.96
±10%
2.32
±10%
0.068
±10%
2.87
±10%
0.091
±10%
1.23
±10%
Resistance Values
Section 9 Generator Troubleshooting
55
Alternator Troubleshooting and Corrective Action
Problem
No output
p
Low no-load voltage
g
High
g no-load voltage
g
Correct no-load voltage
g but low
voltage
l
at load
l d
Unstable voltage
g
Unit is noisy
y
Possible Cause
Corrective Action
Low revolving speed
Check and adjust the revolving speed.
Incorrect connections
Check the wiring diagram and reset the
connections.
Inoperative capacitor
Replace the capacitor.
Winding breakage
Check the winding resistance and
replace the damaged parts.
Rotating diode(s) damage
Check and replace the diode(s).
Low revolving speed
Check and adjust the revolving speed.
Rotating diode(s) damage
Check and replace the diode(s).
Capacitor with low capacity
Increase the capacitor capacity.
Winding breakage
Check the winding resistance and
replace the damaged parts.
Capacitor with high capacity
Reduce the capacitor capacity.
High speed
Adjust the revolving speed.
Rotating diode(s) damage
Check and replace the diode(s).
Low speed at full load
Operate on the speed governor.
Load too high
Reduce the voltage supplied
Uneven rotation
Check the engine
Poor connection contacts
Check the wiring diagram and reset the
connections.
Uneven load
Check the load and eliminate the
uneven loads.
Poor coupling
Check and correct the coupling.
Short circuit in winding or load
Check windings and loads and replace
the damaged parts.
Bearing breakage
Replace the broken bearing
9.7 Alternator Excitation
As a result of disassembling the generator set, the
alternator can get deenergized. It is then necessary to
excite the alternator (after reassembly to the engine) by
applying 12 volts DC to the line terminals. Connect in
series a 10 amp, 250 volt fuse to the positive wire going
to the battery. See Figure 9-10.
Figure 9-10 Alternator Excitation
56
Section 9 Generator Troubleshooting
TP-6137 5/03
Section 10 Generator and Engine Disassembly/Reassembly
10.1 Generator Alternator
Disassembly
1
2
3
Disconnect all the external connections—battery cables
at the battery (negative (--) lead first), AC-output leads in
the controller, remote start panel at the controller
connector, water line at the seawater pump, fuel line at
the fuel pump filter inlet, and exhaust line at the mixing
elbow. Observe all the safety precautions listed at the
beginning of this manual during the disassembly/
reassembly procedures.
4
5
6
7
8
3
1
2
3
1.
2.
3.
4.
5.
6.
7.
8.
Standard controller panel
Hourmeter
On/Off switch
Start switch
Engine low oil pressure LEDs
Engine water overheating temperature LEDs
Exhaust gas overheating temperature LEDs
Connection between the standard controller panel and the
controller box
Figure 10-3 Controller Components
1. Standard controller panel
2. Harness outlet hole to the remote control panel
3. AC harness inlet holes to the control panel
Figure 10-1 Remote Controller Panel Components
1
2
3
Controller Removal
1. Using a 10 mm socket wrench, loosen the four M6
nuts that hold the controller box on the stator
housing. See Figure 10-4.
Figure 10-4 Controller Box Removal
1. Controller box
2. Circuit breaker
3. Controller fuse
2. Disconnect all of the controller box wires that do not
permit its removal.
Figure 10-2 Controller Components
TP-6137 5/03
Section 10 Generator and Engine Disassembly/Reassembly
57
Note: It is possible to connect the output leads in
various positions for different volt configurations.
Marks the leads for correct reconnection.
3. Carefully lift the controller box. See Figure 10-5.
Figure 10-7 Seawater Pump Impeller
Seawater Pump Housing Removal
Figure 10-5 Controller Box Removal
Seawater Pump Cover Removal
1. Using a 7 mm socket wrench, release the four
M4 x 8 screws from the seawater pump cover. See
Figure 10-6.
1. After disconnecting the inlet and outer water tubes
from the seawater pump housing, loosen the three
M5 x 40 socket screws with a 4 mm setscrew
wrench.
2. Remove the housing from the alternator.
Note: Remove the entire seawater pump every time
alternator disassembly is required in order to
check electrical components.
1
1. Seawater pump housing
Figure 10-6 Seawater Pump Cover Removal
Figure 10-8 Seawater Pump Housing
Seawater Pump Impeller Removal
1. Carefully remove the seawater pump impeller from
its housing. See Figure 10-7.
58
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
1
1
2
3
1. M10 x 140 Screws (qty. 4)
4
5
1.
2.
3.
4.
5.
Cover for field diode and rotor inspection
Stator housing (alternator)
Seawater pump shaft
Vibromount nut
Alternator bracket
Figure 10-9 Alternator Components
Engine and Stator Housing Disconnection
Figure 10-11 Disconnect the Alternator
3. Release the two M8 nuts from the vibromounts
using a 13 mm socket wrench.
4. Using a hoist, hook the stator bracket and lift the
alternator to release the vibromount bolts from the
alternator bracket.
5. Install a jawpuller with three M5 threaded screws
into the seawater pump housing holes. See
Figure 10-12.
1. Using a 27 mm socket wrench, unscrew the
seawater pump shaft nut. See Figure 10-10.
Figure 10-12 Jawpuller Installation
Figure 10-10 Seawater Pump Shaft Nut
2. Using a 17 mm socket wrench, loosen the four
M10 x 140 screws to disconnect the alternator from
the engine flywheel housing. See Figure 10-11.
TP-6137 5/03
6. Slowly turn the jawpuller bolt to free the alternator
from the engine.
7. As the puller bolt turns on the head of the alternator
through stud, ensure no damage occurs.
Section 10 Generator and Engine Disassembly/Reassembly
59
Note: With a suitable puller it is possible to reuse the
original seawater pump screws.
8. Remove the stator housing from the rotor. See
Figure 10-13.
Engine and Rotor Hub Disconnection
1. Using a 13 mm socket wrench, loosen the four
M8 x 35 screws and remove the alternator/engine
hub from the engine flywheel. See Figure 10-15.
Figure 10-15 Engine/Rotor Hub
Stator Removal
Figure 10-13 Remove the Stator Housing
Rotor and Alternator Through Stud Disconnection
1. With an uphand hammer, tap the outer surface of
the rotor and release the connection between the
rotor and the alternator through stud.
See
Figure 10-14.
1. The moveable and permanent magnet rotor is
connected at the engine flywheel with five M6 x 30
socket screws. The stator is installed with three
M6 x 16 bolts on the engine flywheel housing. See
Figure 10-16.
1
2
Figure 10-14 Rotor Removal
1. Permanent magnet
2. Stator
Figure 10-16 Stator and Flywheel
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
10.2 Generator Alternator
Reassembly
Note: See Section 1.5 for specified torque values.
Engine and Rotor Hub Installation
1. To reinstall the engine/rotor hub at the flywheel,
tighten the four M8 x 35 screws at the specified
torque (see section 1.5) with a 13 mm socket
wrench. See Figure 10-17.
Figure 10-18 Rotor Replacement
Stator Housing Installation
1. Guide the stator housing towards the engine
flywheel housing as far as possible. An O-ring in
the bearing seat hole stops it.
Figure 10-17 Engine/Rotor Hub
Rotor Installation
1. Apply antiseize compound to the keyed end of the
rotor shaft.
2. Ensure that the holes of the fixing stator housing
screws (M10 x 140) are aligned with the screws of
the engine flywheel housing.
3. Using a light uphand hammer, turn the stator
housing towards the engine flywheel until it enters
and the stator housing rear side supports the rotor
bearing. See Figure 10-19.
2. Guide the rotor on the alternator through stud and
push it towards the flywheel. See Figure 10-18.
Note: To prevent the rotor from falling, screw (without
tightening) the 27 mm nut of the seawater pump
shaft on the rotor through stud.
Figure 10-19 Stator Housing Replacement
4. Screw (without tightening) the four M10 x 140
stator housing screws with a 17 mm socket
wrench. See Figure 10-20.
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Section 10 Generator and Engine Disassembly/Reassembly
61
Figure 10-20 Stator Housing
5. Tighten the four M10 x 140 screws at the specified
torque. See section 1.5. See Figure 10-21.
Figure 10-22 Seawater Pump Shaft
Seawater Pump Installation
1. Assemble on the rear side of the stator housing the
seawater pump housing. Tighten the three M5 x 40
screws at the specified torque (see section 1.5)
with a 4 mm setscrew wrench.
2. Push the impeller in the housing turning it slowly
until it is on the shaft. See Figure 10-23.
Figure 10-21 Alternator Connection
6. Put the holes of the alternator bracket on the two
vibromount mounting bolts and screw the two M8
nuts at the specified torque (see section 1.5) with a
13 mm socket wrench.
7. Tighten the 27 mm nut of the seawater pump shaft
at the specified torque (see section 1.5) to
strengthen the tapered connection between the
rotor and the alternator through stud.
See
Figure 10-22.
Figure 10-23 Seawater Pump Impeller
3. Set the O-ring and install the seawater pump cover.
Tighten the four M4 x 8 screws at the specified
torque (see section 1.5) with a 6 mm socket
wrench.
Note: Check the generator set’s nameplate to verify the
original voltage configuration. See Section 10 for
more
information
regarding
voltage
reconnection.
4. Reconnect all external connections—the exhaust
line to the mixing elbow, the fuel lines, the water line
to the seawater pump, the remote panel, the AC
output leads, and the battery cable to the battery
(negative (--) lead last).
5. Open the seacock and the fuel valve.
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
10.3 Generator Engine Disassembly
Disconnect all the external connections—battery cables
at the battery (negative (--) lead first), AC-output leads in
the controller, remote start panel at the controller P3
connector, water line at the seawater pump, fuel line at
the fuel pump filter inlet, and exhaust line at the mixing
elbow. Observe all the safety precautions listed at the
beginning of this manual during the disassembly/
reassembly procedures.
2. Before removing the electric fuel pump, clean the
inside of the antiresonator housing with a rag.
3. Ensure that dirt or debris does not enter the
cylinder.
4. Remove the antiresonator housing by removing
the two screws. See Figure 10-25.
5. Discard the gasket located between the housing
and the engine head.
Note: This
section
includes
engine
disassembly/reassembly procedures unique to
the marine generator set. Consult the engine
service manual for engine torque specs, special
tool requirements, and further engine service
information.
Oil Drain
1. Place a container under the oil drain hole.
2. Remove the oval flange of the oil drain.
Figure 10-24.
See
3. Drain the oil. Allow time for a complete oil drain.
Note: If necessary, slightly tip the engine to ensure a
complete oil drain.
Figure 10-25 Antiresonator Housing
Remove the exhaust elbow (mixer)
1. Disconnect the water pipe located between the
thermostat and the exhaust elbow.
See
Figure 10-26.
2. Loosen the upper clamp on the outlet water pipe.
3. Remove the two hex socket screws that attach the
exhaust elbow to the engine head.
Figure 10-24 Oil Drain
Remove the air intake’s antiresonator device
4. Remove the exhaust elbow without damaging the
high exhaust temperature switch or its electrical
connection.
1. Remove the air cleaner cover’s four flat screws.
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Section 10 Generator and Engine Disassembly/Reassembly
63
5. Discard the gasket located between the exhaust
elbow and the engine head.
Figure 10-27 Rocker Cover
Disconnect the high-pressure fuel line
1. Hold a 14 mm wrench on the fuel injector pump’s
nipple valve. See Figure 10-28.
Figure 10-26 Exhaust Elbow (Mixer)
2. Loosen the high-pressure line using a 17 mm
wrench.
Disconnect the fuel supply and return lines
1. To remove the fuel supply line and prevent fuel
spills, close the fuel supply line using a clamp or a
flat-nose pliers located between the filter and the
electric fuel pump.
2. Close the fuel return line to the tank using another
clamp located after the injector’s banjo fitting.
Remove the rocker cover
1. Remove the two rocker cover nuts, washer, cover
and gasket. See Figure 10-27.
Note: If the cover is difficult to remove, tap it lightly with
a soft-faced hammer.
Figure 10-28 High-Pressure Fuel Line on the
Delivery Valve
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
3. Repeat this procedure on the nut that connects the
high-pressure line to the injector body. See
Figure 10-29.
Remove the cylinder head
1. Remove the two locknuts and washers that hold
the protective tube retaining spring.
2. Loosen and remove the four cylinder head nuts.
See Figure 10-31.
Figure 10-29 High Pressure Fuel Line on the Fuel
Injector
Remove the fuel injector
1. Remove the two nuts from the injector clamp. See
Figure 10-30.
2. Remove the injector from its seat. If it’s locked, tap
the injector lightly and carefully with a soft-faced
hammer. Be careful not to damage the injector.
Figure 10-31 Cylinder Head
Remove the rocker arms
1. Using a chisel and hammer, drive out the rocker
arm shaft. See Figure 10-32.
2. Remove the rocker arms and push rods.
Note: Remove the copper washer located between the
head and the injector.
3. The cup-shaped cover holds the arm’s shaft in its
bracket. Remove any snap rings during this
disassembly.
4. Hold the protective tube and remove the cylinder
head. See Figure 10-33.
Figure 10-30 Fuel Injector
Figure 10-32 Rocker Arms
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Section 10 Generator and Engine Disassembly/Reassembly
65
Replacing the valve guides
1. If valve guide replacement is necessary, use the
proper driver and press out the old guides from the
head. See Figure 10-35.
Figure 10-33 Protective Tube
Disassembly the valves
1. Use the special tool shown in Figure 10-34 to
disassemble the valves. Consult the engine
service manual.
Note: Be aware of the two thin steel washers located
under the intake valve spring.
Figure 10-35 Valve Guide
Replacing the seats
The cylinder head is equipped with two valve ring seats
of wear-resistant steel. Consult the engine service
manual and the following procedure if the head seats
are so worn that a grinding valve rework will not ensure a
good gas proof. Use a valve seat cutter if a surface
rework is needed.
1. Insert the guide pin into the valve guide.
2. Rotate the cutting surface of the T-handled tool
applying light pressure to touch the ring seat. See
Figure 10-36.
Note: Do not cut too deep or use grinding compound.
Observe the allowable valve recess.
To check the sealing valves:
1. Put the sealing valves in their guides.
Figure 10-34 Valve
2. Install the springs and fill the intake/exhaust
openings on the head with a small amount of diesel
fuel oil.
3. A good valve seal occurs when the diesel fuel oil
leaks about 2 drops per minute.
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Cylinder
1. Rotate the flywheel until the piston reaches the
Bottom Dead Center (BDC) so that the studs are a
guideline to remove the cylinder from the
crankcase. See Figure 10-38.
Note: If the repair does not require replacing the piston
or liner, keep the liner on the piston. Lift up the
liner enough so that the piston pin hole is free.
Continue with the following step.
Figure 10-36 T-Handle Tool
Tappets block
1. Release the two push rods by loosening the two
hex cap screws and removing them from the upper
surface of the gear case. See Figure 10-37
Figure 10-38 Cylinder
Figure 10-37 Gear Case
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Section 10 Generator and Engine Disassembly/Reassembly
67
Piston
1. Rotate the flywheel until the piston reaches Top
Dead Center (TDC).
2. Using a needle-nose pliers, remove the piston pin
retainer from the groove in the piston. See
Figure 10-39.
2. Move the flywheel until the piston reaches the
Bottom Dead Center (BDC) of its stroke.
3. Loosen the six hex cap head screws of the oil
cooler housing and remove it from the engine. If
the screws are tight, tap them with a hammer and a
flat-faced punch to loosen them.
See
Figure 10-41.
4. Using a 13 mm socket wrench, unscrew the two
connecting rod nuts. Pull the connecting rod cap
downwards while pushing the connecting rod
upwards. See Figure 10-42.
5. If the two half shells of the connecting rod need to
be reinstalled, mark them so that proper
repositioning occurs during reassembly.
Figure 10-39 Piston
3. Gently push the piston pin out of the piston from the
flywheel side. See Figure 10-40.
Note: If the piston pin sticks in the piston, remove the
piston together with the connecting rod. Remove
the assembly from the engine and hammer out
the piston pin.
Figure 10-41 Oil Cooler Housing
Figure 10-40 Piston
Figure 10-42 Connecting Rod Nuts
Connecting Rod
1. Lay the engine, on its flywheel side, on a work
bench.
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Gear Cover
1. Remove the six hex cap head screws to remove the
gear cover. If necessary, tap the cover with a
soft-faced hammer to remove it. See Figure 10-43.
2. If, during cover removal, the cover catches on the
governor, move the flywheel to release the
governor’s cover. Do not disassemble or remove
the gear cover any further unless necessary.
Otherwise, modifications to the delivery start of the
fuel pump, gear timing adjustment, and the engine
speed values may be required.
Figure 10-44 Injection Pump Removal
Camfollower
Figure 10-43 Gear Cover
1. To remove the camfollower, unscrew the screw
shown in Figure 10-45 through the oil filling hole.
3. If disassembly of the injection pump, camfollower,
camshaft, camshaft gear, or camshaft bearing is
necessary, proceed to the following sections.
1
Injection Pump
1. Remove the two hex nuts of the injection pump and
remove the pump from the gear cover.
Note: To avoid losing the shims or the gasket, reinstall
them on the cover and reinstall the washers and
nuts. See Figure 10-44.
1. Screw
Figure 10-45 Camfollower
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Section 10 Generator and Engine Disassembly/Reassembly
69
Camshaft Bearing
Camshaft
1. Release the snap ring that holds the camshaft in
the gear cover.
2. Using a driver, press out the camshaft.
Figure 10-46.
1. Remove the camshaft’s ball bearing from inside of
the gear cover by using a socket pushed with a
hydraulic press. See Figure 10-48.
See
Figure 10-48 Camshaft Bearing
Figure 10-46 Camshaft
Camshaft Gear
1. Remove the gear from the camshaft using a puller
or by pressing it off from the shaft.
See
Figure 10-47.
Figure 10-47 Camshaft
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Governor
Speed Control Shaft
1. Put the gear cover on the work bench.
2. Using a pliers, remove the inner retainer ring from
the eccentric shaft.
3. Pull the eccentric shaft towards the outer side of the
gear cover so that the fuel pump pin is released.
WARNING
1. Install a holding device and remove the governor
pin. See Figure 10-50.
2. Spread the flyweights with a sturdy driver.
3. Use a socket wrench to unscrew the governor.
Note: The governor has a left--hand thread. Unscrew
the governor in a clockwise direction.
Rotating parts.
Can cause severe injury or death.
Operate the generator set only when
all guards, screens, and covers are in
place.
4. Carefully, using a pliers, unhook the outer torsional
return spring from its boss.
5. Hold the inner control lever and turn down the
accelerator lever until the inner torsional return
spring releases its tension.
Figure 10-50 Governor
6. Release the inner control lever from the eccentric
shaft.
Figure 10-49 Speed Control Shaft
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Section 10 Generator and Engine Disassembly/Reassembly
71
Oil Pump
1. Loosen the three hex cap screws to remove the oil
pump from the crankcase. See Figure 10-51.
Figure 10-52 Flywheel Nut
Figure 10-51 Oil Pump
Flywheel
1. Use a socket wrench and striker tool to loosen the
flywheel nut two turns. Keep the flywheel nut on the
shaft. See Figure 10-52.
Note: If removing the flywheel from the engine without
removing the governor, place the accelerator
lever in the higher speed (full load) position.
Otherwise, damage may occur to the regulation
linkage.
Figure 10-53 Flywheel
2. Install the flywheel puller.
3. Turn the two screws until the flywheel breaks loose
from the tapered side of the engine crankshaft.
See Figure 10-53.
4. Remove the nut and the flywheel.
72
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Main Bearing Cover
1. Put the engine crankcase on the work bench so
that the flywheel side is in the upper position.
2. Remove the four main bearing cover nuts and
washers.
3. Install two screws (M6 x 30) in the threaded holes of
the cover and turn them until the cover is released
from the crankcase. See Figure 10-54.
4. Remove the key, O-ring, two angle rings, and two
elastic washers.
See Figure 10-55 and
Figure 10-56.
Figure 10-56 Main Bearing
Crankshaft
1. Carefully remove
crankcase.
the
crankshaft
from
the
Note: Avoid touching/scratching the main bearing
bushing.
Figure 10-54 Main Bearing Cover
2. Use a puller to release the gear wheel from the
crankshaft. See Figure 10-57.
Figure 10-57 Crankshaft
3. For ball bearing replacement:
Figure 10-55 Main Bearing
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Section 10 Generator and Engine Disassembly/Reassembly
73
a. Place the main bearing cover under a press
and support its outer side with two mountings.
b. Press out the crankshaft. See Figure 10-58.
Figure 10-58 Crankshaft
c. Remove the snap ring of the bearing’s outer
race.
d. With a socket, press on the inner race until the
bearing is out from its seat.
Figure 10-59 Crankcase Bushing
Crankshaft Gear
1. To install the crankshaft gear, heat it in an oil bath or
on an electrical heater plate at a temperature of
90--100_ C (195--210_ F). See Figure 10-60.
Note: The engine is completely disassembled. Clean
all parts with suitable cleaning solution. After the
parts are dried, check for any damage, wear or
tear. Replace any parts that are questionable.
10.4 Generator Engine Reassembly
Crankcase Bushing
1. Using a driver, press the crankshaft’s bush bearing
on the crankcase. Ensure that its edge is inside the
crankcase as indicated in Figure 10-59. Also,
ensure that its oil holes are horizontal and aligned
with the crankcase groove.
Figure 10-60 Crankshaft Gear
2. Using a socket and a hydraulic press, push it down
on the shaft.
3. Lubricate the bush bearing and slide the crankshaft
into the housing without damaging the bush
bearing with the gear teeth. See Figure 10-61.
74
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
2. Lock the bearing’s outer race with the snap ring in
the cover.
3. Set the crankshaft on the board of a press and
carefully clean the tapered surface of the bearing
seat.
4. Put the main bearing cover on the crankshaft so
that the snap ring is towards the flywheel side.
5. Using a socket, press the main bearing cover on
the crankshaft until the inner race bearing is in its
seat, against the shoulder of the crankshaft.
6. Lubricate the oil seal lip and the tapered surface of
the crankshaft and assemble the oil seal on the
cover. Do not use grease.
Figure 10-61 Bush Bearing
Main Bearing Cover
1. Using a hydraulic press and socket, install the ball
bearing in the main bearing cover until the outer
race is against its seat. See Figure 10-62.
7. Put the O-ring between the crankcase and cover
and tap lightly with a soft-faced hammer to seat the
cover.
8. Tighten the nuts to the appropriate torque. See
Section 1.5.
9. Install on the outside of the main bearing cover the
O-ring, the angle ring, and the two elastic washers
as shown in Figure 10-62.
1
2
3
4
5
Note: The cover installs correctly on the crankcase by
turning it in the correct position.
6
7
2
1
1.
2.
3.
4.
5.
6.
7.
O-Ring between the crankcase and cover
Bearing snap ring
Oil seal
Angle ring
Elastic washers
O-Ring under the angle ring
Bearing
Figure 10-62 Main Bearing Cover Assembly
Figure 10-63 Main Bearing Cover
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Section 10 Generator and Engine Disassembly/Reassembly
75
Flywheel
1. Remove any oil or grease from the flywheel and the
tapered side of the crankshaft.
2. Place the flywheel key in its groove.
3. Install the flywheel on the tapered side of the
crankshaft and tighten the nut at the specified
torque. See Section 1.5. See Figure 10-64.
Figure 10-65 Oil Pump
Figure 10-64 Flywheel
Oil Pump
1. Assemble the oil pump together with the thin
covering plate valve and gasket to the crankcase.
See Figure 10-65 and Figure 10-66.
2. Pull the pump downwards before tightening the
screws at the specified torque. See Section 1.5.
3. The clearance on the pump screw holes allows
enough backlash between the crankshaft gear and
the pump gear.
Figure 10-66 Oil Pump
Note: The 4EOZ/3.5EFOZ model’s engine have a
counterclockwise rotation (as viewed from the
engine flywheel). Also, the oil pump is located on
the crankcase’s left side.
76
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Governor
1. Install the holding device so that all of its teeth are
engaged with the teeth of the crankshaft gear. See
Figure 10-67.
2. Remove any oil or grease from the threaded hole of
the crankshaft and governor screw. Apply a thin
film of Loctite No. 270 (or equivalent) on the
governor screw threads.
Note: The governor screw has left--hand threads. To
correctly install the governor, ensure that the
governor flyweights have spread entirely and that
the socket wrench holds the entire head of the
governor screw. Tighten the screw at the
specified torque value and remove the holding
device. See Section 1.5.
Connecting Rod
1. To install new bearing shells, take a half shell and
place it about 3/4 into the connecting rod cap.
2. Using a sliding movement, press the shell in its seat
until the lip goes into its relief.
Note: Avoid touching/scratching the connecting
rod bushing.
3. Repeat this procedure for the other half shell to be
placed in the connecting rod trunk.
4. Find the casting numbers located on the
connecting rod trunk and cap surfaces. See
Figure 10-68. Similar numbers identify connecting
rod parts that are matched together.
The
connecting rod assembly must contain the two
parts with similar numbers.
5. Lubricate the bearing shells.
6. Drive the connecting rod trunk and its cap in the
crankcase around the crankshaft journal. See
Figure 10-69.
Note: The stamped numbers must be aligned on the
same side of the connecting rod but it is not
important which engine side (flywheel or gear
cover) the numbers face.
7. Tighten the connecting rod nuts at the specified
torque. See Section 1.5.
Figure 10-67 Governor
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Section 10 Generator and Engine Disassembly/Reassembly
77
Camshaft Gear
1. Put the camshaft gear wheel in an oil bath or an
electric heater plate at a temperature of 90--100_ C
(95--210_ F). See Figure 10-70.
2. Using a socket and hydraulic press, push the gear
in its seat on the camshaft.
Note: For a correct gear adjustment timing, the chisel
mark on the gear must face the camshaft side.
Figure 10-68 Connecting Rod
Figure 10-69 Connecting Rod
8. Install the oil cooler and screws torqued to the
specified value. See Section 1.5.
78
Section 10 Generator and Engine Disassembly/Reassembly
Figure 10-70 Camshaft Gear
TP-6137 5/03
Camshaft Bearing
1. Using a socket, install the camshaft bearing on the
gear cover until it is against its seat. See
Figure 10-71.
Injection Pump Camfollower
1. Assemble the injection pump camfollower and
tighten its fixing nut through the oil fill hole .
Speed Control Shaft
1. Set the inner torsion return spring in the control
lever’s (fuel pump lever’s) hole. See Figure 10-73.
2. Insert the end leg of the spring in the inner control
lever hole.
3. Put the control lever on the bench.
4. Install the ratchet plate and the accelerator lever on
the pin of the eccentric speed shaft. It will engage
with the ratchet plate’s slot and the accelerator
lever hole.
5. Install the outer torsion return spring on the
eccentric shaft and hook its end leg in the middle
notch of the ratchet plate. See Figure 10-74.
Figure 10-71 Camshaft Bearing
Camshaft
1. Install the O-ring.
2. From inside the gear cover, use a socket to push
the camshaft into the bearing hole.
See
Figure 10-72.
3. Put a fitted socket under the outer bearing race to
avoid an improper installation of the camshaft.
4. Set the camshaft’s snap ring in its groove to lock it.
Figure 10-73 Control Lever
Figure 10-74 Ratchet Plate and Accelerator Lever
Figure 10-72 Camshaft
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Section 10 Generator and Engine Disassembly/Reassembly
79
6. Guide the eccentric shaft through the bushing
housing until it meets the inner control lever. See
Figure 10-75.
Figure 10-75 Eccentric Shaft
7. Turn the ratchet plate towards the lower position
until the inner spring can be hooked with the other
end leg at the groove of the eccentric shaft.
8. Move the ratchet plate between its two stop
notches on the gear housing.
Figure 10-76 Gear Housing Boss
10. Push the eccentric speed shaft further until it locks
with the inner retainer ring. See Figure 10-77.
9. Use a looping wire to move and to hook the other
end leg of the outer spring at the gear housing
boss. See Figure 10-76.
Figure 10-77 Inner Retainer Ring
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Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Piston
1. Using a ring expander tool, install the piston rings
so that the “Top Marks” are towards the piston
crown. See Figure 10-80.
Figure 10-78 Inner Spring
11. Check the speed control shaft performance and
check its springs. The inner spring is correctly set if
it rejects the push of the governor pin. See
Figure 10-78.
12. The outer spring is correctly set when the
accelerator lever is held in position during a higher
engine speed rate. Increase its tension by
changing the position on the ratchet plate. Also,
check its reaction in the opposite direction. See
Figure 10-79.
Figure 10-80 Piston and Ring Expander Tool
2. Lubricate the rings and the piston skirt.
3. Check that the piston ring gaps are at 120_ offset.
4. Put the cylinder on the bench with its upper side
touching the bench.
Note: Never tap on the piston crown.
Note: Never install the piston from the upper side of the
cylinder because the liner is narrower and lightly
tapered in this position.
5. Compress all of the rings with a ring compressor
tool and drive the piston in the cylinder.
Figure 10-79 Ratchet Plate
Figure 10-81 Ring Compressor
TP-6137 5/03
Section 10 Generator and Engine Disassembly/Reassembly
81
6. Guide the piston into the cylinder liner until the
piston hole is slightly to the upper edge of the
cylinder. This will allow for the connection between
the piston assembly and the connecting rod.
7. Carefully slide the cylinder towards the crankcase
until its lower part is inserted into the block.
8. Align the piston and connecting rod holes and
install the pin with its retainers. See Figure 10-82.
Valve Guides
1. Press the valve guides in the proper head holes.
Carefully ensure that they are installed in an
upright position at the head surface.
See
Figure 10-83.
Note: Assemble the rotocap valve’s retainer ring before
pressing the exhaust valve guide.
Note: If the piston has to be reinstalled on the engine,
mark it before its removal.
Figure 10-83 Valve Guides
Figure 10-82 Piston Assembled
82
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Valve
Note: The exhaust valve has a larger counterbore than
the intake valve when viewing the head from the
upper surface. The exhaust valve has a smaller
hole when viewing the head from the opposite
side.
Note: The rotocap and conical shaped spring belong to
the exhaust valve. See Figure 10-84.
Figure 10-85 Cylinder Head and Gasket
6. On the shorter stud, put the engine lifting bracket.
7. Tighten the nuts at the specified torque.
Section 1.5.
See
Gear Cover
1. Move the piston to Top Dead Center (TDC) and
check the alignment between the mark on the
flywheel and the mark on the crankcase at the
3 o’clock position. See Figure 10-86.
Figure 10-84 Intake and Exhaust Valve Components
1. Install the two thin steel washers under the intake
valve spring.
2. Grind the valves and set new cup seals on the valve
guide’s head.
3. Before installing the rotocap, check for proper
operation by spinning the cap washer and
releasing it. Replace the rotocap if it produces a an
ununiform, rattling sound or if it is hard to move.
4. Fit the cylinder head gasket. See Figure 10-85.
Figure 10-86 Flywheel and Crankcase Marks
5. Slide the head onto the cylinder.
TP-6137 5/03
Section 10 Generator and Engine Disassembly/Reassembly
83
2. Set the governor pin into the governor hole using
grease to keep it in place.
3. Align the mark on the camshaft gear with the mark
on the gear cover. See Figure 10-87.
4. Put the cover gasket in place. Slowly guide the
gear cover towards the crankcase without moving
the camshaft.
5. Check that the distance between the flywheel mark
and the crankcase mark is within ± 2 mm
(0.0787 in.). If within this range, the timing gear
operation is correct.
Figure 10-88 Flywheel Mark
Figure 10-87 Camshaft Gear and Gear Cover Marks
6. The crankshaft could stop in a position that causes
difficulty installing the gear cover because the
governor touches its lower side. If this happens,
follow this procedure to install the cover:
a. Move the flywheel until its mark aligns with the
threaded hole on the crankcase at the 1 o’clock
position. See Figure 10-88.
b. Move the camshaft gear until its mark is exactly
three teeth to the left of the gear cover mark.
See Figure 10-89.
c. Install the gear cover and turn the flywheel until
the camshaft mark aligns with the one on the
gear cover.
d. Check the distances between the flywheel
mark and the crankcase mark located in the
3 o’clock position is within ± 2 mm (0.0787 in.)
of each other. If it is, the valve timing
adjustment is acceptable.
84
Section 10 Generator and Engine Disassembly/Reassembly
Figure 10-89 Camshaft and Gear Cover Mark
7. When installing the gear cover screws, note that
the upper two screws and the one screw located in
the middle left position are longer than the other
three screws.
8. Place a new gasket under the front plate of the gear
cover and tighten the two screws.
TP-6137 5/03
2. Put the retainer spring in the upper side of the head
as shown in Figure 10-92.
3. Do not tighten the nuts.
4. Guide the push rods in the tube until they touch the
tappets.
Note: Both rods look alike. However, place the intake
valve’s push rod in the hole closer to the
crankcase.
Figure 10-90 Gear Cover Screws
Block Tappets
1. Check that the tappets movement in their block is
not forced. Check the surface wear that touches
the camshaft. See Figure 10-91.
Figure 10-92 Retainer Spring In Cylinder Head
Rocker Arms
1. Ensure that the piston is in the Top Dead Center
(TDC) position.
2. Lubricate and then drive the rocker arm shaft into
its support.
3. Align the push rods with the correct rocker arms.
4. Ensure a clearance between these parts to prevent
damaging the head nuts after tightening.
5. Tighten the head nuts at the specified torque in
three steps after the retaining spring nuts. See
Section 1.5. See Figure 10-93.
Figure 10-91 Block Tappets
Push Rods and Protective Tube
1. Install the O-rings and push down the protective
tube of the push rods towards the gear cover.
TP-6137 5/03
Figure 10-93 Cylinder Head Nuts
Section 10 Generator and Engine Disassembly/Reassembly
85
Valve Adjustment
Fuel Injector
1. Move the piston in the compression stroke until it’s
at Top Dead Center (TDC).
1. Replace the washer located under the injector and
in the seat of the cylinder head.
2. Loosen the locknuts of the valve adjustment
screws and drive a 0.2 mm (0.78 in.) feeler gage
between the upper surface of the valve stem and
the rocker arm. See Figure 10-94.
Note: Use only a gasket under the injector and ensure
that the old gasket is removed.
3. Adjust the clearance until a slight drag is felt on the
feeler gage when turning the valve adjustment
screws with a screwdriver.
3. Tighten the injector nuts at the specified torque.
See Section 1.5.
4. Hold the valve adjustment screws and tighten the
locknuts.
2. Install the injector and the clamp.
Injection Pump and Speed Control Shaft
Connection
1. Keep the accelerator lever in the higher position.
5. Recheck the clearance.
2. Pull down the fuel excess start device’s button.
Note: As the inner return spring pushes the control
lever, it goes towards the timing gear cover and
stops against it.
3. Set the pin of the fuel injection pump in the
higher-fuel supply position (towards the right, front
fuel pump view).
4. Guide the injection pump in the timing gear cover
and ensure that its pin is in the yoke of the control
lever’s arm.
5. Reinstall the injection pump using the same
number and type of shims.
Figure 10-94 Feeler Gage
Figure 10-95 Adjustment
86
Section 10 Generator and Engine Disassembly/Reassembly
Note: Before installing the shims, put the paper gasket
on the cover because a direct contact does not
permit adequate sealing.
Figure 10-96 Injection Pump
TP-6137 5/03
High Pressure Line
1. Install the high pressure line and tighten the nuts at
the injector nipple and at the nonreturn valve nipple
located on the fuel injection pump body.
Valve Cover
1. Install the valve cover gasket on the upper surface
of the head. See Figure 10-98.
2. Reinstall the valve cover.
Note: Perform step 1 while holding the injector and
nonreturn valve nipples with a 14 mm wrench.
See Figure 10-97.
3. Put the synthetic rubber washers under the cover
nuts and tighten at the specified torque. See
Section 1.5.
2. Tighten the fuel line nuts with a 17 mm wrench.
Note: To avoid oil leaks, check and hold the right side of
the gasket on the head during this operation.
Figure 10-97 High Pressure Line
Figure 10-98 Valve Cover Gasket
TP-6137 5/03
Section 10 Generator and Engine Disassembly/Reassembly
87
10.5 Engine Component Dimensions and Wear
Dimensions
Original
Max. Limit
Max. mm (in.)
Min. mm (in.)
mm (in.)
upper diameter
81 900 (3.2244)
81.900
(3 2244)
81 880 (3.2236)
81.880
(3 2236)
82 000 (3.2283)
82.000
(3 2283)
below diameter
82.030 (3.2295)
82.010 (3.2287)
82.130 (3.2335)
Crown diameter
81.967 (3.2270)
(
)
81.953 (3.2265)
(
)
--
1st
compression
p
ring
g groove
g
height
g
2.120 (0.0835)
(
)
2.100 (0.0827)
(
)
--
2nd compression ring groove height
2.070 (0.0815)
2.050 (0.0807)
--
Oil scrapper ring groove height
4.040 (0.1591)
4.020 (0.1583)
--
Diameter of the piston pin hole
22.010 (0.8665)
22.04 (0.8663)
--
groove/1stt comp. ring height
0.145 (0.0057)
0.110 (0.0043)
0.170 (0.0067)
groove/2
/2nd
Part Description
Cylinder Liner
Bore:
Note:
N
t It
I iis not possible
ibl to rehone
h
the
h liner
li
because
b
off the
h
conical shape. We always suggest to exchange the
cylinder together with the piston and rings.
Piston
Clearance between:
0 092 (0.0036)
0.092
(0 0036)
0 060 (0.0024)
0.060
(0 0024)
0 140 (0.0055)
0.140
(0 0055)
groove/oil
/ il scrapper ring
i height
h i ht
comp. ring
i height
h i h
0 065 (0.0026)
0.065
(0 0026)
0 030 (0.0012)
0.030
(0 0012)
0 110 (0.0043)
0.110
(0 0043)
1st and
d 2nd compression
i ring
i gaps
0 500 (0.0197)
0.500
(0 0197)
0 300 (0.0118)
0.300
(0 0118)
1 000 (0.0394)
1.000
(0 0394)
oil scrapper ring gap
0 500 (0.0197)
0.500
(0 0197)
0 250 (0.0098)
0.250
(0 0098)
1 000 (0.0394)
1.000
(0 0394)
Journal diameter (D1)
( )
40.080 (1.5780)
(
)
40.060 (1.5772)
(
)
--
Journal diameter (D3)
( )
35.023 (1.3789)
(
)
35.015 (1.3785)
(
)
--
Journal diameter (D2)
40.030 (1.5760)
40.020 (1.5756)
--
D1
39.830 (1.5681)
39.810 (1.5673)
--
D2
39.780 (1.5661)
39.770 (1.5657)
--
D1
39 580 (1.5583)
39.580
(1 5583)
39 560 (1.5575)
39.560
(1 5575)
--
D2
39 530 (1.5563)
39.530
(1 5563)
39 520 (1.5559)
39.520
(1 5559)
--
C k h ft gear diameter
Crankshaft
di
t
22 000 (0.8661)
22.000
(0 8661)
21 970 (0.8650)
21.970
(0 8650)
--
Diameter of crankshaft gear journal
22 029 (0.8673)
22.029
(0 8673)
22 008 (0.8665)
22.008
(0 8665)
--
Con rod bearing and crankshaft journal diameter
0 060 (0.0024)
0.060
(0 0024)
0 030 (0.0012)
0.030
(0 0012)
0 110 (0.0043)
0.110
(0 0043)
Bushing and crankshaft journal diameter
0 050 (0.0020)
0.050
(0 0020)
0 020 (0.0008)
0.020
(0 0008)
0 080 (0.0031)
0.080
(0 0031)
Note: The excessive clearances or gaps are because of
the abnormal wears of the cylinder liner, piston, and
rings. We always suggest to exchange the cylinder
together with the piston and rings.
Crankshaft
Journal diameter : undersize of 0.25 mm (0.010 in.)
Journal diameter : undersize of 0.50 mm (0.020 in.)
Clearance:
88
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
10.6 Engine Component Dimensions and Wear (Continued)
Dimensions
Original
Max. Limit
Max. mm (in.)
Min. mm (in.)
mm (in.)
Large bore diameter (without bearing)
43.666 (1.7191)
43.650 (1.7185)
--
Small bore diameter (without bearing)
24 986 (0.9837)
24.986
(0 9837)
24 974 (0.9832)
24.974
(0 9832)
--
Outer bushing diameter
25.075 (0.9872)
25.035 (0.9856)
--
Inner bushing diameter
22.050 (0.8681)
22.030 (0.8673)
--
22.000 (0.8661)
21.996 (0.8660)
--
Camshaft gear journal diameter
22.031 (0.8674)
22.022 (0.8670)
--
Camshaft gear hole diameter
22.000 (0.8661)
21.980 (0.8654)
--
Crankcase hole diameter
21.970 (0.8650)
21.960 (0.8645)
21.990 (0.8657)
Camshaft journal (in the crankcase) diameter
21.930 (0.8634)
21.910 (0.8626)
21.860 (0.8606)
Part Description
Connecting Rod
Piston Pin
Outer diameter
Camshaft
Cylinder Head
Inner guide diameter
7.014 (0.2761)
7.005 (0.2758)
--
Outer guide diameter
10.019 (0.3944)
10.010 (0.3941)
--
Head protrusion of the intake valve guide
5 700 (0.2244)
5.700
(0 2244)
(*)
--
Head protrusion of the exhaust valve guide
6.200 (0.2441)
(*)
--
Clearance between the guide and stem valve
0.049 (0.0019)
0.025 (0.0009)
0.15 (0.0059)
Valve face angle
45
45_
--
--
Valve guide (in the head) hole diameter
9.988 (0.3932)
9.979 (0.3929)
--
Valve head recessing
0 200 (0.0079)
0.200
(0 0079)
0 100 (0.0039)
0.100
(0 0039)
0 600 (0.0236)
0.600
(0 0236)
(*) Press
P
down
d
until
til th
the llower guide
id edge
d is
i att th
the llevell off
the flat surface.
TP-6137 5/03
Section 10 Generator and Engine Disassembly/Reassembly
89
Notes
90
Section 10 Generator and Engine Disassembly/Reassembly
TP-6137 5/03
Section 11 Wiring Diagrams
Electroswitch
2-Wire Generator Sets
3-Wire Generator Sets
L1
To Generator
Set
L1
2
1
3
4
7
8
To Shore
Power
L2
2
1
6
5
3
4
L2
6
5
To Generator
Set
7
8
11
12
To Shore
Power
L0
10
9
To Load
To Load
Kraus Naimler/American Solenoid
(Early Rectangular Design)
2-Wire Generator Sets
3-Wire Generator Sets
L1
L1
To Generator
Set
1
2
3
4
6
5 To Shore
Power
1
2
6
3
4
8
9
10
14
5
L2
L2
8
7
To Generator
Set
7
To Shore
Power
L0
13
To Load
To Load
Kraus Naimler/American Solenoid
(Newer Round Design)
2-Wire Generator Sets
3-Wire Generator Sets
L1
L1
To Generator
Set
L2
3
2
7
6
4
1
To Shore
Power
3
2
7
6
11
10
4
1
L2
8
5
To Generator
Set
8
5
To Shore
Power
L0
12
9
To Load
To Load
TP-5399-5
Figure 11-1 Marine Manual (Ship-to-Shore) Transfer Switch
TP-6137 5/03
Section 11 Wiring Diagrams
91
11.1 Wiring Diagram, Schematic
GM20645-B
92
Section 11 Wiring Diagrams
TP-6137 5/03
11.2 Wiring Diagram, Point-to-Point
GM20645-B
TP-6137 5/03
Section 11 Wiring Diagrams
93
Notes
94
Section 11 Wiring Diagrams
TP-6137 5/03
Appendix A Abbreviations
The following list contains abbreviations that may appear in this publication.
A, amp
ABDC
AC
A/D
ADC
adj.
ADV
AHWT
AISI
ALOP
alt.
Al
ANSI
AO
API
approx.
AR
AS
ASE
ASME
assy.
ASTM
ATDC
ATS
auto.
aux.
A/V
avg.
AVR
AWG
AWM
bat.
BBDC
BC
BCA
BCI
BDC
BHP
blk.
blk. htr.
BMEP
bps
br.
BTDC
Btu
Btu/min.
C
cal.
CARB
CB
cc
CCA
ccw.
CEC
cfh
cfm
ampere
after bottom dead center
alternating current
analog to digital
analog to digital converter
adjust, adjustment
advertising dimensional
drawing
anticipatory high water
temperature
American Iron and Steel
Institute
anticipatory low oil pressure
alternator
aluminum
American National Standards
Institute
(formerly American Standards
Association, ASA)
anticipatory only
American Petroleum Institute
approximate, approximately
as required, as requested
as supplied, as stated, as
suggested
American Society of Engineers
American Society of
Mechanical Engineers
assembly
American Society for Testing
Materials
after top dead center
automatic transfer switch
automatic
auxiliary
audiovisual
average
automatic voltage regulator
American Wire Gauge
appliance wiring material
battery
before bottom dead center
battery charger, battery
charging
battery charging alternator
Battery Council International
before dead center
brake horsepower
black (paint color), block
(engine)
block heater
brake mean effective pressure
bits per second
brass
before top dead center
British thermal unit
British thermal units per minute
Celsius, centigrade
calorie
California Air Resources Board
circuit breaker
cubic centimeter
cold cranking amps
counterclockwise
Canadian Electrical Code
cubic feet per hour
cubic feet per minute
TP-6137 5/03
CG
CID
CL
cm
CMOS
cogen.
Com
conn.
cont.
CPVC
crit.
CRT
CSA
CT
Cu
cu. in.
cw.
CWC
cyl.
D/A
DAC
dB
dBA
DC
DCR
deg., °
dept.
dia.
DI/EO
DIN
DIP
DPDT
DPST
DS
DVR
E, emer.
EDI
EFR
e.g.
EG
EGSA
EIA
EI/EO
EMI
emiss.
eng.
EPA
EPS
ER
ES
ESD
est.
E-Stop
etc.
exh.
ext.
F
center of gravity
cubic inch displacement
centerline
centimeter
complementary metal oxide
substrate (semiconductor)
cogeneration
communications (port)
connection
continued
chlorinated polyvinyl chloride
critical
cathode ray tube
Canadian Standards
Association
current transformer
copper
cubic inch
clockwise
city water-cooled
cylinder
digital to analog
digital to analog converter
decibel
decibel (A weighted)
direct current
direct current resistance
degree
department
diameter
dual inlet/end outlet
Deutsches Institut fur Normung
e. V.
(also Deutsche Industrie
Normenausschuss)
dual inline package
double-pole, double-throw
double-pole, single-throw
disconnect switch
digital voltage regulator
emergency (power source)
electronic data interchange
emergency frequency relay
for example (exempli gratia)
electronic governor
Electrical Generating Systems
Association
Electronic Industries
Association
end inlet/end outlet
electromagnetic interference
emission
engine
Environmental Protection
Agency
emergency power system
emergency relay
engineering special,
engineered special
electrostatic discharge
estimated
emergency stop
et cetera (and so forth)
exhaust
external
Fahrenheit, female
fglass.
FHM
fl. oz.
flex.
freq.
FS
ft.
ft. lbs.
ft./min.
g
ga.
gal.
gen.
genset
GFI
fiberglass
flat head machine (screw)
fluid ounce
flexible
frequency
full scale
foot, feet
foot pounds (torque)
feet per minute
gram
gauge (meters, wire size)
gallon
generator
generator set
ground fault interrupter
GND,
gov.
gph
gpm
gr.
GRD
gr. wt.
HxWxD
HC
HCHT
HD
HET
hex
Hg
HH
HHC
HP
hr.
HS
hsg.
HVAC
ground
governor
gallons per hour
gallons per minute
grade, gross
equipment ground
gross weight
height by width by depth
hex cap
high cylinder head temperature
heavy duty
high exhaust temperature
hexagon
mercury (element)
hex head
hex head cap
horsepower
hour
heat shrink
housing
heating, ventilation, and air
conditioning
high water temperature
hertz (cycles per second)
integrated circuit
inside diameter, identification
International Electrotechnical
Commission
Institute of Electrical and
Electronics Engineers
improved motor starting
inch
inches of water
inches of mercury
inch pounds
incorporated
industrial
internal
internal/external
input/output
iron pipe
International Organization for
Standardization
joule
Japanese Industry Standard
kilo (1000)
kelvin
kiloampere
kilobyte (210 bytes)
HWT
Hz
IC
ID
IEC
IEEE
IMS
in.
in. H2O
in. Hg
in. lbs.
Inc.
ind.
int.
int./ext.
I/O
IP
ISO
J
JIS
k
K
kA
KB
Appendix A-1
kg
kg/cm2
kilogram
kilograms per square
centimeter
kgm
kilogram-meter
kilograms per cubic meter
kg/m3
kHz
kilohertz
kJ
kilojoule
km
kilometer
kOhm, kΩ kilo-ohm
kPa
kilopascal
kph
kilometers per hour
kV
kilovolt
kVA
kilovolt ampere
kVAR
kilovolt ampere reactive
kW
kilowatt
kWh
kilowatt-hour
kWm
kilowatt mechanical
L
liter
LAN
local area network
L x W x H length by width by height
lb.
pound, pounds
lbm/ft3
pounds mass per cubic feet
LCB
line circuit breaker
LCD
liquid crystal display
ld. shd.
load shed
LED
light emitting diode
Lph
liters per hour
Lpm
liters per minute
LOP
low oil pressure
LP
liquefied petroleum
LPG
liquefied petroleum gas
LS
left side
Lwa
sound power level, A weighted
LWL
low water level
LWT
low water temperature
m
meter, milli (1/1000)
M
mega (106 when used with SI
units), male
m3
cubic meter
m3/min. cubic meters per minute
mA
milliampere
man.
manual
max.
maximum
MB
megabyte (220 bytes)
MCM
one thousand circular mils
MCCB
molded-case circuit breaker
meggar
megohmmeter
MHz
megahertz
mi.
mile
mil
one one-thousandth of an inch
min.
minimum, minute
misc.
miscellaneous
MJ
megajoule
mJ
millijoule
mm
millimeter
mOhm, mΩ
milliohm
MOhm, MΩ
megohm
MOV
metal oxide varistor
MPa
megapascal
mpg
miles per gallon
mph
miles per hour
MS
military standard
m/sec.
meters per second
MTBF
mean time between failure
MTBO
mean time between overhauls
mtg.
mounting
A-2 Appendix
MW
mW
µF
N, norm.
NA
nat. gas
NBS
NC
NEC
NEMA
NFPA
Nm
NO
no., nos.
NPS
NPSC
NPT
NPTF
NR
ns
OC
OD
OEM
OF
opt.
OS
OSHA
OV
oz.
p., pp.
PC
PCB
pF
PF
ph., ∅
PHC
PHH
PHM
PLC
PMG
pot
ppm
PROM
psi
pt.
PTC
PTO
PVC
qt.
qty.
R
rad.
RAM
RDO
ref.
rem.
RFI
RH
RHM
rly.
megawatt
milliwatt
microfarad
normal (power source)
not available, not applicable
natural gas
National Bureau of Standards
normally closed
National Electrical Code
National Electrical
Manufacturers Association
National Fire Protection
Association
newton meter
normally open
number, numbers
National Pipe, Straight
National Pipe, Straight-coupling
National Standard taper pipe
thread per general use
National Pipe, Taper-Fine
not required, normal relay
nanosecond
overcrank
outside diameter
original equipment
manufacturer
overfrequency
option, optional
oversize, overspeed
Occupational Safety and Health
Administration
overvoltage
ounce
page, pages
personal computer
printed circuit board
picofarad
power factor
phase
Phillips head crimptite (screw)
Phillips hex head (screw)
pan head machine (screw)
programmable logic control
permanent-magnet generator
potentiometer, potential
parts per million
programmable read-only
memory
pounds per square inch
pint
positive temperature coefficient
power takeoff
polyvinyl chloride
quart
quantity
replacement (emergency)
power source
radiator, radius
random access memory
relay driver output
reference
remote
radio frequency interference
round head
round head machine (screw)
relay
rms
rnd.
ROM
rot.
rpm
RS
RTV
SAE
root mean square
round
read only memory
rotate, rotating
revolutions per minute
right side
room temperature vulcanization
Society of Automotive
Engineers
scfm
standard cubic feet per minute
SCR
silicon controlled rectifier
s, sec.
second
SI
Systeme international d’unites,
International System of Units
SI/EO
side in/end out
sil.
silencer
SN
serial number
SPDT
single--pole, double--throw
SPST
single--pole, single--throw
spec, specs
specification(s)
sq.
square
sq. cm
square centimeter
sq. in.
square inch
SS
stainless steel
std.
standard
stl.
steel
tach.
tachometer
TD
time delay
TDC
top dead center
TDEC
time delay engine cooldown
TDEN
time delay emergency to
normal
TDES
time delay engine start
TDNE
time delay normal to
emergency
TDOE
time delay off to emergency
TDON
time delay off to normal
temp.
temperature
term.
terminal
TIF
telephone influence factor
TIR
total indicator reading
tol.
tolerance
turbo.
turbocharger
typ.
typical (same in multiple
locations)
UF
underfrequency
UHF
ultrahigh frequency
UL
Underwriter’s Laboratories, Inc.
UNC
unified coarse thread (was NC)
UNF
unified fine thread (was NF)
univ.
universal
US
undersize, underspeed
UV
ultraviolet, undervoltage
V
volt
VAC
volts alternating current
VAR
voltampere reactive
VDC
volts direct current
VFD
vacuum fluorescent display
VGA
video graphics adapter
VHF
very high frequency
W
watt
WCR
withstand and closing rating
w/
with
w/o
without
wt.
weight
xfmr
transformer
TP-6137 5/03
Appendix B Common Hardware Application Guidelines
Use the information below and on the following pages to
identify proper fastening techniques when no specific
reference for reassembly is made.
Bolt/Screw Length: When bolt/screw length is not given,
use Figure 1 as a guide. As a general rule, a minimum
length of one thread beyond the nut and a maximum
length of 1/2 the bolt/screw diameter beyond the nut is
the preferred method.
Steps for common hardware application
1. Determine entry hole type: round or slotted.
2. Determine exit hole type: fixed female thread (weld
nut), round, or slotted.
For round and slotted exit holes, determine if
hardware is greater than 1/2 inch in diameter, or
1/2 inch in diameter or less. Hardware that is
greater than 1/2 inch in diameter takes a standard
nut and SAE washer. Hardware 1/2 inch or less in
diameter can take a properly torqued whiz nut or
spiralock nut. See the diagram below.
Washers and Nuts: Use split lock washers as a bolt
locking device where specified. Use SAE flat washers
with whiz nuts, spiralock nuts, or standard nuts and
preloading (torque) of the bolt in all other applications.
See General Torque Specifications and other torque
specifications in the service literature.
3. Follow these SAE washer rules after determining
exit hole type:
a. Always use a washer between hardware and a
slot.
Preferred Nut/Bolt Clearance
1
b. Always use a washer under a nut (see 2 above
for exception).
2
c. Use a washer under a bolt when the female
thread is fixed (weld nut).
4. Refer to the diagram below, which depicts the
preceding hardware configuration possibilities.
Unacceptable Nut/Bolt Clearance
3
2
1
3
G-585
1. 1/2 of bolt diameter
2. Minimum 1 full thread beyond top of nut
3. Below top of nut
Figure 1
Acceptable Bolt Lengths
5
4
6
1.
2.
3.
4.
5.
6.
Cap screw
Entry hole types
Standard nut and SAE washer
Whiz nut or spiralock: up to 1/2 in. dia. hardware
Weld nuts: above 1/2 in. dia. hardware
Exit hole types
Figure 2
TP-6137 5/03
G-585
Acceptable Hardware Combinations
Appendix A-3
Appendix C General Torque Specifications
Use the following torque specifications when service
literature instructions give no specific torque values.
The charts list values for new plated, zinc phosphate, or
oiled threads. Increase values by 15% for nonplated
threads. All torque values are +0%/--10%.
American Standard Fasteners Torque Specifications
Assembled into Cast Iron or Steel
Size
Torque
Measurement
8-32
10-24
10-32
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20
1/2-13
1/2-20
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
1-8
1-12
in. lbs. (Nm)
in. lbs. (Nm)
in. lbs. (Nm)
in. lbs. (Nm)
in. lbs. (Nm)
in. lbs. (Nm)
in. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
ft. lbs. (Nm)
Grade 2
16
26
26
60
72
120
132
18
20
29
32
44
49
60
67
83
94
147
164
191
209
(1.8)
(2.9)
(2.9)
(6.8)
(8.1)
(13.6)
(14.9)
(24)
(27)
(39)
(43)
(60)
(66)
(81)
(91)
(113)
(128)
(199)
(222)
(259)
(283)
Grade 5
20
32
32
96
108
192
204
28
31
44
50
68
76
98
109
135
153
240
268
532
582
(2.3)
(3.6)
(3.6)
(10.8)
(12.2)
(21.7)
(23.1)
(38)
(42)
(60)
(68)
(92)
(103)
(133)
(148)
(183)
(208)
(325)
(363)
(721)
(789)
Grade 8
—
—
—
132 (14.9)
144 (16.3)
264 (29.8)
288 (32.5)
39 (53)
44 (60)
63 (85)
70 (95)
96 (130)
108 (146)
138 (187)
154 (209)
191 (259)
216 (293)
338 (458)
378 (513)
818 (1109)
895 (1214)
Assembled into
Aluminum
Grade 2 or 5
16 (1.8)
26 (2.9)
26 (2.9)
60 (6.8)
72 (8.1)
120 (13.6)
132 (14.9)
18 (24)
20 (27)
—
—
—
—
—
—
—
—
—
—
—
—
Metric Fasteners Torque Specifications, Measured in ft. lbs. (Nm)
Assembled into Cast Iron or Steel
A-4 Appendix
Size (mm)
Grade 5.8
Grade 8.8
Grade 10.9
M6 x 1.00
M8 x 1.25
M8 x 1.00
M10 x 1.50
M10 x 1.25
M12 x 1.75
M12 x 1.50
M14 x 2.00
M14 x 1.50
M16 x 2.00
M16 x 1.50
M18 x 2.50
M18 x 1.50
4
10
16
20
29
35
48
55
74
85
104
114
145
7
18
18
35
35
61
65
97
103
148
155
203
225
10
26
26
50
50
86
92
136
142
210
218
288
315
(5.6)
(13.6)
(21)
(27)
(39)
(47)
(65)
(74)
(100)
(115)
(141)
(155)
(196)
(9.9)
(25)
(25)
(49)
(49)
(83)
(88)
(132)
(140)
(200)
(210)
(275)
(305)
(14)
(35)
(35)
(68)
(68)
(117)
(125)
(185)
(192)
(285)
(295)
(390)
(425)
Assembled into
Aluminum
Grade 5.8 or 8.8
4 (5.6)
10 (13.6)
16 (21)
20 (27)
29 (39)
—
—
—
—
—
—
—
—
TP-6137 5/03
Appendix D Common Hardware Identification
Screw/Bolts/Studs
Nuts
Hardness Grades
Head Styles
Nut Styles
American Standard
Hex Head or Machine Head
Hex Head
Grade 2
Hex Head or Machine Head
with Washer
Lock or Elastic
Grade 5
Flat Head (FHM)
Square
Grade 8
Round Head (RHM)
Cap or Acorn
Grade 8/9 (Hex Socket
Head)
Pan Head
Wing
Hex Socket Head Cap or
Allent Head Cap
Washers
Metric
Number stamped on
hardware; 5.8 shown
5.8
Washer Styles
Hex Socket Head or Allent
Head Shoulder Bolt
Plain
Sheet Metal Screw
Split Lock or Spring
Stud
Spring or Wave
Drive Styles
External Tooth Lock
Hex
Internal Tooth Lock
Hex and Slotted
Internal-External Tooth Lock
Phillipsr
Slotted
Hex Socket
Allent head screw is a trademark of Holo-Krome Co.
Phillipsr screw is a registered trademark of Phillips Screw Company.
Sample Dimensions
American Standard (Screws, Bolts, Studs, and Nuts)
1/4-20 x 1
Length In Inches (Screws and Bolts)
Plain Washers
9/32 x 5/8 x 1/16
Thickness
Threads Per Inch
External Dimension
Major Thread Diameter In Fractional Inches Or Screw Number Size
Internal Dimension
Metric (Screws, Bolts, Studs, and Nuts)
Lock Washers
M8-1.25 x 20
Length In Millimeters (Screws and Bolts)
Distance Between Threads In Millimeters
5/8
Internal Dimension
Major Thread Diameter In Millimeters
TP-6137 5/03
Appendix A-5
Appendix E Common Hardware List
The Common Hardware List lists part numbers and dimensions for common hardware items.
American Standard
Part No.
Dimensions
Part No.
Dimensions
Part No.
Dimensions
Type
Hex Head Bolts (Grade 5)
Hex Head Bolts, cont.
Hex Nuts
X-465-17
X-465-6
X-465-2
X-465-16
X-465-18
X-465-7
X-465-8
X-465-9
X-465-10
X-465-11
X-465-12
X-465-14
X-465-21
X-465-25
X-465-20
1/4-20 x .38
1/4-20 x .50
1/4-20 x .62
1/4-20 x .75
1/4-20 x .88
1/4-20 x 1.00
1/4-20 x 1.25
1/4-20 x 1.50
1/4-20 x 1.75
1/4-20 x 2.00
1/4-20 x 2.25
1/4-20 x 2.75
1/4-20 x 5.00
1/4-28 x .38
1/4-28 x 1.00
X-6238-14
X-6238-16
X-6238-21
X-6238-22
3/8-24 x .75
3/8-24 x 1.25
3/8-24 x 4.00
3/8-24 x 4.50
X-6009-1
1-8
Standard
X-6024-5
X-6024-2
X-6024-8
X-6024-3
X-6024-4
X-6024-11
X-6024-12
7/16-14 x .75
7/16-14 x 1.00
7/16-14 x 1.25
7/16-14 x 1.50
7/16-14 x 2.00
7/16-14 x 2.75
7/16-14 x 6.50
X-6210-3
X-6210-4
X-6210-5
X-6210-1
6-32
8-32
10-24
10-32
Whiz
Whiz
Whiz
Whiz
5/16-18 x .50
5/16-18 x .62
5/16-18 x .75
5/16-18 x .88
5/16-18 x 1.00
5/16-18 x 1.25
5/16-18 x 1.50
5/16-18 x 1.75
5/16-18 x 2.00
5/16-18 x 2.25
5/16-18 x 2.50
5/16-18 x 2.75
5/16-18 x 3.00
5/16-18 x 4.50
5/16-18 x 5.00
5/16-18 x 5.50
5/16-18 x 6.00
5/16-18 x 6.50
1/2-13 x .75
1/2-13 x 1.00
1/2-13 x 1.25
1/2-13 x 1.50
1/2-13 x 1.75
1/2-13 x 2.00
1/2-13 x 2.25
1/2-13 x 2.50
1/2-13 x 2.75
1/2-13 x 3.00
1/2-13 x 3.50
1/2-13 x 4.00
1/2-13 x 4.50
1/2-13 x 5.50
1/2-13 x 6.00
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
1/2-13
7/16-20
X-125-33
X-125-23
X-125-3
X-125-31
X-125-5
X-125-24
X-125-34
X-125-25
X-125-26
230578
X-125-29
X-125-27
X-125-28
X-125-22
X-125-32
X-125-35
X-125-36
X-125-40
X-129-15
X-129-17
X-129-18
X-129-19
X-129-20
X-129-21
X-129-22
X-129-23
X-129-24
X-129-25
X-129-27
X-129-29
X-129-30
X-463-9
X-129-44
X-6210-2
X-6210-6
X-6210-7
X-6210-8
X-6210-9
X-6210-10
X-6210-11
X-6210-12
X-6210-15
X-6210-14
Spiralock
Spiralock
Spiralock
Spiralock
Spiralock
Spiralock
Spiralock
Spiralock
Spiralock
Spiralock
X-85-3
X-88-12
X-89-2
5/8-11
3/4-10
1/2-20
Standard
Standard
Standard
X-129-51
X-129-45
X-129-52
1/2-20 x .75
1/2-20 x 1.25
1/2-20 x 1.50
X-125-43
X-125-44
X-125-30
X-125-39
X-125-38
5/16-24 x 1.75
5/16-24 x 2.50
5/16-24 x .75
5/16-24 x 2.00
5/16-24 x 2.75
X-6238-2
X-6238-10
X-6238-3
X-6238-11
X-6238-4
X-6238-5
X-6238-1
X-6238-6
X-6238-17
X-6238-7
X-6238-8
X-6238-9
X-6238-19
X-6238-12
X-6238-20
X-6238-13
X-6238-18
X-6238-25
3/8-16 x .62
3/8-16 x .75
3/8-16 x .88
3/8-16 x 1.00
3/8-16 x 1.25
3/8-16 x 1.50
3/8-16 x 1.75
3/8-16 x 2.00
3/8-16 x 2.25
3/8-16 x 2.50
3/8-16 x 2.75
3/8-16 x 3.00
3/8-16 x 3.25
3/8-16 x 3.50
3/8-16 x 3.75
3/8-16 x 4.50
3/8-16 x 5.50
3/8-16 x 6.50
X-6021-3
X-6021-4
X-6021-2
X-6021-1
273049
X-6021-5
X-6021-6
X-6021-7
X-6021-12
X-6021-11
X-6021-10
5/8-11 x 1.00
5/8-11 x 1.25
5/8-11 x 1.50
5/8-11 x 1.75
5/8-11 x 2.00
5/8-11 x 2.25
5/8-11 x 2.50
5/8-11 x 2.75
5/8-11 x 3.75
5/8-11 x 4.50
5/8-11 x 6.00
X-6021-9
5/8-18 x 2.50
X-6239-1
X-6239-8
X-6239-2
X-6239-3
X-6239-4
X-6239-5
X-6239-6
3/4-10 x 1.00
3/4-10 x 1.25
3/4-10 x 1.50
3/4-10 x 2.00
3/4-10 x 2.50
3/4-10 x 3.00
3/4-10 x 3.50
X-792-1
X-792-5
X-792-8
1-8 x 2.25
1-8 x 3.00
1-8 x 5.00
A-6 Appendix
Washers
Part No.
ID
X-25-46
.125
X-25-9
.156
X-25-48
.188
X-25-36
.219
X-25-40
.281
X-25-85
.344
X-25-37
.406
X-25-34
.469
X-25-26
.531
X-25-15
.656
X-25-29
.812
X-25-127 1.062
OD
.250
.375
.438
.500
.625
.687
.812
.922
1.062
1.312
1.469
2.000
Bolt/
Thick. Screw
.022
.049
.049
.049
.065
.065
.065
.065
.095
.095
.134
.134
#4
#6
#8
#10
1/4
5/16
3/8
7/16
1/2
5/8
3/4
1
TP-6137 5/03
Metric
Hex head bolts are hardness grade 8.8 unless noted.
Part No.
Dimensions
Part No.
Dimensions
Part No.
Dimensions
Type
Hex Head Bolts (partial thread)
Hex Head Bolts (full thread)
Hex Nuts
M931-06040-60
M931-06055-60
M931-06060-60
M931-06070-60
M931-06075-60
M931-06090-60
M6-1.00 x 40
M6-1.00 x 55
M6-1.00 x 60
M6-1.00 x 70
M6-1.00 x 75
M6-1.00 x 90
M933-04006-60
M4-0.70 x 6
M934-03-50
M3-0.50
Standard
M933-05050-60
M5-0.80 x 50
M934-04-50
M4-0.70
Standard
M5-0.80
M5-0.80
Standard
Elastic Stop
M8-1.25 x 35
M8-1.25 x 40
M8-1.25 x 40*
M8-1.25 x 45
M8-1.25 x 50
M8-1.25 x 55*
M8-1.25 x 60
M8-1.25 x 70
M8-1.25 x 70*
M8-1.25 x 75
M8-1.25 x 80
M8-1.25 x 90
M8-1.25 x 95
M8-1.25 x 100
M6-1.00 x 10
M6-1.00 x 14
M6-1.00 x 16
M6-1.00 x 20
M6-1.00 x 25
M6-1.00 x 40
M6-1.00 x 50
M934-05-50
M982-05-80
M931-08035-60
M931-08040-60
M931-08040-82
M931-08045-60
M931-08050-60
M931-08055-82
M931-08060-60
M931-08070-60
M931-08070-82
M931-08075-60
M931-08080-60
M931-08090-60
M931-08095-60
M931-08100-60
M933-06010-60
M933-06014-60
M933-06016-60
M933-06020-60
M933-06025-60
M933-06040-60
M933-06050-60
M6923-06-80
M934-06-64
M982-06-80
M6-1.00
M6-1.00
M6-1.00
Spiralock
Std. (green)
Elastic Stop
M933-08016-60
M933-08020-60
M933-08025-60
M933-08030-60
M8-1.25 x 16
M8-1.25 x 20
M8-1.25 x 25
M8-1.25 x 30
M6923-08-80
M934-08-60
M982-08-80
M8-1.25
M8-1.25
M8-1.25
Spiralock
Standard
Elastic Stop
M6923-10-80
M982-10-80
M10-1.50
M10-1.50
Spiralock
Elastic Stop
M12-1.75
M12-1.75
Spiralock
Elastic Stop
M982-14-80
M14-2.00
Elastic Stop
M10-1.50 x 40
M10-1.50 x 45
M10-1.50 x 50
M10-1.50 x 55
M10-1.50 x 60
M10-1.50 x 65
M10-1.50 x 70
M10-1.50 x 80
M10-1.50 x 90
M10-1.50 x 100
M10-1.50 x 12
M10-1.25 x 20
M10-1.50 x 20
M10-1.50 x 25
M10-1.50 x 30
M10-1.50 x 30*
M10-1.25 x 35
M10-1.50 x 35
M6923-12-80
M982-12-80
M931-10040-60
M931-10045-60
M931-10050-60
M931-10055-60
M931-10060-60
M931-10065-60
M931-10070-60
M931-10080-60
M931-10090-60
M931-10100-60
M933-10012-60
M961-10020-60
M933-10020-60
M933-10025-60
M933-10030-60
M933-10030-82
M961-10035-60
M933-10035-60
M6923-16-80
M982-16-80
M16-2.00
M16-2.00
Spiralock
Elastic Stop
M982-18-80
M18-2.50
Elastic Stop
M933-12016-60
M933-12020-60
M933-12025-60
M933-12025-82
M933-12030-60
M933-12040-60
M933-12040-82
M12-1.75 x 16
M12-1.75 x 20
M12-1.75 x 25
M12-1.75 x 25*
M12-1.75 x 30
M12-1.75 x 40
M12-1.75 x 40*
M934-20-80
M982-20-80
M20-2.50
M20-2.50
Standard
Elastic Stop
M934-22-80
M982-22-80
M22-2.50
M22-2.50
Standard
Elastic Stop
M931-12045-60
M931-12050-60
M931-12055-60
M931-12060-60
M931-12065-60
M931-12080-60
M931-12090-60
M931-12100-60
M931-12110-60
M12-1.75 x 45
M12-1.75 x 50
M12-1.75 x 55
M12-1.75 x 60
M12-1.75 x 65
M12-1.75 x 80
M12-1.75 x 90
M12-1.75 x 100
M12-1.75 x 110
M961-14025-60
M933-14025-60
M14-1.50 x 25
M14-2.00 x 25
M934-24-80
M982-24-80
M24-3.00
M24-3.00
Standard
Elastic Stop
M931-16090-60
M16-2.00 x 90
M961-16025-60
M933-16025-60
M933-16030-82
M933-16035-60
M933-16040-60
M933-16050-60
M933-16050-82
M933-16060-60
M16-1.50 x 25
M16-2.00 x 25
M16-2.00 x 30*
M16-2.00 x 35
M16-2.00 x 40
M16-2.00 x 50
M16-2.00 x 50*
M16-2.00 x 60
M931-20065-60
M931-20120-60
M931-20160-60
M20-2.50 x 65
M20-2.50 x 120
M20-2.50 x 160
M933-18050-60
M933-18060-60
M18-2.50 x 50
M18-2.50 x 60
M931-22090-60
M931-22120-60
M931-22160-60
M22-2.50 x 90
M22-2.50 x 120
M22-2.50 x 160
M931-24090-60
M931-24120-60
M931-24160-60
M24-3.00 x 90
M24-3.00 x 120
M24-3.00 x 160
Pan Head Machine Screws
M7985A-03010-20 M3-0.50 x 10
M7985A-03012-20 M3-0.50 x 12
Washers
Part No.
M125A-03-80
M125A-04-80
M125A-05-80
M125A-06-80
M125A-08-80
M125A-10-80
M125A-12-80
M125A-14-80
M125A-16-80
M125A-18-80
M125A-20-80
M125A-24-80
ID
3.2
4.3
5.3
6.4
8.4
10.5
13.0
15.0
17.0
19.0
21.0
25.0
Bolt/
OD Thick. Screw
7.0
9.0
10.0
12.0
16.0
20.0
24.0
28.0
30.0
34.0
37.0
44.0
0.5
0.8
1.0
1.6
1.6
2.0
2.5
2.5
3.0
3.0
3.0
4.0
M3
M4
M5
M6
M8
M10
M12
M14
M16
M18
M20
M24
M7985A-04020-20 M4-0.70 x 20
M7985A-05010-20 M5-0.80 x 10
M7985A-05012-20 M5-0.80 x 12
Flat Head Machine Screws
M965A-05016-20
M5-0.80 x 16
* This metric hex bolt’s hardness is grade 10.9.
TP-6137 5/03
Appendix A-7
KOHLER CO. Kohler, Wisconsin 53044
Phone 920-565-3381, Fax 920-459-1646
For the nearest sales/service outlet in the
US and Canada, phone 1-800-544-2444
KohlerPowerSystems.com
TP-6137 5/03
E2003 by Kohler Co. All rights reserved.
Kohler Power Systems
Asia Pacific Headquarters
7 Jurong Pier Road
Singapore 619159
Phone (65)264-6422, Fax (65)264-6455
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