www.wackergroup.com
0117617
001
0999
en
Trash Pumps
Dewatering Pumps
Diaphragm Pumps
PT
PG
PD
REPAIR MANUAL
0
1
1
7
6
1
7
PT / PG / PD REPAIR
FOREWORD
Operating / Parts Information
You must be familiar with the operation of this machine before you attempt to troubleshoot or make any repairs
to it. Basic operating and maintenance procedures are described in the operator’s / parts manual supplied with
the machine. The operator’s / parts manual should be kept with the machine. Use it to order replacement parts
when needed. If this manual becomes lost, please contact WACKER Corporation to order a replacement.
Damage caused by misuse or neglect of the unit should be brought to the attention of the operator, to prevent
similar occurrences from happening in the future.
This manual provides information and procedures to safely repair and maintain this WACKER model. For your
own safety and protection from injury, carefully read, understand and observe the safety instructions described
in this manual. THE INFORMATION CONTAINED IN THIS MANUAL WAS BASED ON MACHINES IN
PRODUCTION PRIOR TO THE TIME OF PUBLICATION OF THIS MANUAL. WACKER CORPORATION
RESERVES THE RIGHT TO CHANGE ANY PORTION OF THIS INFORMATION WITHOUT NOTICE.
Information Contained in This Manual
This repair manual is intended to provide information and procedures to safely operate, maintain and service
the WACKER Model PT, PG and PD Series Pumps. Step-by-step instructions and illustrations are provided
whenever possible. Refer to this repair manual and the owner’s manual supplied with the unit whenever
servicing this machine.
It is the responsibility of the individual servicing this equipment to familiarize himself with its operating
characteristics and service procedures before attempting any repairs. Repairs caused by misuse or neglect
of the unit should be brought to the attention of the operator, to prevent similar failures from happening in the
future.
This manual covers pump models
PT, PG & PD
Refer to the following pages for machine serial numbers or
item numbers.
i
FOREWORD
PT / PG / PD REPAIR
Nameplate
A nameplate listing the Model Number, Item Number, Revision, and Serial Number is attached to each unit.
Please record the information found on this plate so it will be available should the nameplate become lost or
damaged. When ordering parts or requesting service information, you will always be asked to specify
the model, item number, revision number, and serial number of the unit.
My machine’s numbers are:
Model number
Item Number
Serial Number
Revision
MENOMONEE FALLS, WI USA 53051
Model
PT3A
Rev.
0006729
kg
lbs
kW
dB(A)
MADE
IN USA
Serial Number
5010101
101
hp
gpm
m
ft
Manuf.Yr.
m3/hr
111173
Item Number
1027SD33
1027SD32
1011SD33
ii
PT / PG / PD REPAIR
FOREWORD
Pump Model by Item Number
Pump models and engine options are listed below in item number sequence.
Item Number
Model
Item Number
Engine
Make
Model
Model
Engine
Make
Model
4185
4186
4187
4188
4189
PT 4B
PT 2B
PT 2R
PT 3B
PT 3R
Briggs
Briggs
Robin
Briggs
Robin
326432
132232
EY 18-3W
195432
EY 27W
5795
5825
5826
6216
6217
PD 2B
PD 3B
PD 3B
PD 3A
PD 3A
Briggs
Briggs
Briggs
Honda
Honda
80252
132212
132212
GX 110
GX 110
4193
4200
4201
4202
5000
PD 3B
PT 4H
PT 2F
PT 3H
PT 2B
Briggs
Hatz
Farymann
Hatz
Briggs
80252
E 785
15A430
E 79
132232
6246
6247
6248
6292
6294
PT 3R
PT 3R
PT 3R
PT 2B
PT 2B
Robin
Robin
Robin
Briggs
Briggs
WI-280
WI-280
WI-280
132232
132232
5001
5002
5003
5004
5005
PT 2R
PT 2F
PT 3B
PT 3R
PT 3H
Robin
Farymann
Briggs
Robin
Hatz
EY 18-3W
15A430
195432
EY 27W
E 79
6303
6532
6533
6534
6535
PT 2R
PT 2A
PT 2A
PT 2B
PT 2B
Robin
Honda
Honda
Briggs
Briggs
WI-185
GX 140
GX 140
132232
132232
5006
5007
5014
5015
5016
PT 4B
PT 4H
PG 2
PG 3
PG 2
Briggs
Hatz
Honda
Honda
Honda
326432
E 785
G 150
G2
G150
6536
6537
6557
6558
6574
PT 2R
PT 2R
PT 4B
PT 4H
PT 3A
Robin
Robin
Briggs
Hatz
Honda
WI-185
WI-185
326432
E 785
GX 240
5016 01151 & up
5017
5017 01151 & up
5018
5018 01049 & up
PG 2
PG 3
PG 3
PD 3B
PD 3B
Honda
Honda
Honda
Briggs
Briggs
GX 110
G 200
GX 140
81000
80252
6575
6576
6577
6578
6579
PT 3B
PT 3B
PT 3H
PT 3R
PT 3R
Briggs
Briggs
Hatz
Robin
Robin
195432
195432
ES 79
WI-280
WI-280
5022
5023
5029
5034
5035
PT 2R
PT 2R
PT 3H
PTS 3H
PTS 3H
Robin
Robin
Hatz
Hatz
Hatz
WI-185
WI-185
E 79
E 79
E 79
6580
6586
6587
6720
6721
PT 2H
PT 3V
PT 3V
PT 2A
PT 2A
Hatz
Vanguard
Vanguard
Honda
Honda
673 LS
161432
161432
GX 160
GX 160
5036
5037
5037 01017 & up
5038
5038 01009 & up
PT 4H
PTS 4H
PTS 4H
PTS 4H
PTS 4H
Hatz
Hatz
Hatz
Hatz
Hatz
E 785
E 785
E 786
E 785
E 786
6722
6724
6725
6726
6729
PT 2B
PT 2R
PT 2R
PT 2R
PT 3A
Briggs
Robin
Robin
Robin
Honda
132232
WI-185
WI-185
WI-185
GX 240
5039
5040
5043
5044
5045
PT 4B
PTS 4H
PT 3R
PT 3B
PTS 3H
Briggs
Hatz
Robin
Briggs
Hatz
326432
E 785
EY 27W
195432
E 79
6730
6731
6732
6733
6734
PT 3A
PT 3B
PT 3B
PT 3H
PT 3R
Honda
Briggs
Briggs
Hatz
Robin
GX 240
195432
195432
ES 79
WI-280
5046
5047
5048
5057
5058
PT 3R
PT 2F
PT 2B
PT 2H
PT 2H
Robin
Farymann
Briggs
Hatz
Hatz
WI-185
15A430
132232
E 673
E 673
6735
6772
6788
6789
6801
PT 3R
PT 2R
PT 2R
PT 2R
PD 3B
Robin
Robin
Robin
Robin
Briggs
WI-280
WI-185
W01-170
W01-170
133412
5059
5061
5063
5066
5067
PT 2H
PD 3H
PD 3H
PT 2A
PT 2A
Hatz
Hatz
Hatz
Honda
Honda
E 673
E 673
E 673
GX 140
GX 140
7116
7117
7118
7119
7120
PT 2Y
PT 2Y
PT 3Y
PT 3Y
PD 2B
Yanmar
Yanmar
Yanmar
Yanmar
Briggs
L48AE-D
L48AE-D
L70AE-D
L70AE-D
80212
5068
5068 01581 & up
5069
5069 01026 & up
5794
PT 3A
PT 3A
PT 3A
PT 3A
PD 2B
Honda
Honda
Honda
Honda
Briggs
G 300
GX 240
G 300
GX 240
80252
7121
7160
7163
7171
7610
PD 2B
PT 2R
PT 3A
PT 3V
PDT 2A
Briggs
Robin
Honda
Vanguard
Honda
80212
W01-170
GX240
185432
GX120
iii
FOREWORD
Item Number
PT / PG / PD REPAIR
Model
Engine
Item Number
Make
Model
7611
7614
7615
7616
7619
PDT2A(I)
PDT 3A
PDT3A(I)
PDT3A
PDT3 (I)
Honda
Honda
Honda
Honda
n/a
GX120
GX120
GX120
GX120
n/a
7624
7625
7628
7629
7633
PDI 2A
PDI2A(I)
PDI 3A
PDI3A(I)
PDT 2
Honda
Honda
Honda
Honda
n/a
GX120
GX120
GX120
GX120
n/a
7658
7659
7683
7691
8023
PG 2
PG 3
PTS 4V
PTS4V(I)
PT3V(I)
Honda
Honda
Vanguard
Vanguard
Vanguard
GX120
GX160
303447
303447
185432
Model
Engine
Make
iv
Model
PT / PG / PD REPAIR
GENERAL
1
Table of Contents
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
1.14
1.15
Safety Notes ........................................................................................... 1-2
Laws Pertaining to Spark Arresters ......................................................... 1-2
Tools ....................................................................................................... 1-2
Reference Numbers ( ) ........................................................................... 1-2
Ordering Parts ......................................................................................... 1-2
Application .............................................................................................. 1-3
Operating Safety ..................................................................................... 1-4
Operator Safety while using Internal Combustion Engines ...................... 1-4
Service Safety ......................................................................................... 1-5
Technical Data (PT2) .............................................................................. 1-6
Technical Data (PT3) .............................................................................. 1-8
Technical Data (PTS4) .......................................................................... 1-10
Technical Data (PG2 / PG3) .................................................................. 1-12
Technical Data (PD2 / PD3) .................................................................. 1-14
Performance Curves ............................................................................. 1-16
1-1
1 GENERAL
1.1
PT / PG / PD REPAIR
Safety Notes
This manual contains NOTES, CAUTIONS, and WARNINGS which must be followed to prevent the possibility of
improper service, damage to the equipment, or personal injury.
Notes: Notes appear in italics and contain additional
information important to a procedure.
CAUTION: Cautions provide information important to prevent
errors which could damage machine or components.
WARNING
Warnings warn of conditions or practices which
could lead to personal injury or death!
1.2 Laws Pertaining to Spark
Arresters
Notice: Some states require that in certain locations,
spark arresters be used on internal combustion engines.
A spark arrester is a device designed to prevent the
discharge of sparks or flames from the engine exhaust.
It is often required when operating equipment on forested
land to reduce the risk of fires. Consult the engine
distributor or local authorities and make sure you comply
with regulations regarding spark arresters.
1.3
Tools
1.4
Reference Numbers ( )
Repair procedures contain reference numbers enclosed
in parentheses ( ). These numbers refer to the item
numbers shown on the appropriate assembly drawings
and other detailed drawings. They are included to aid the
mechanic in identifying parts and assembling components.
1.5
Ordering Parts
Since all possible problems encountered while repairing
the equipment cannot be anticipated, it is up to the
mechanic to use common sense and good judgment in
tool selection.
The repair procedures contained in this manual do not
include part numbers. For parts replacement information, refer to the Parts Manual originally supplied with the
unit.
The use of any special tools is recommended only for
those operations where the use of conventional tools
proves inadequate.
If the original Parts Manual has been lost, a replacement
manual may be ordered from WACKER Corporation.
When ordering a replacement Parts Manual, please list
model number, item number, revision number, and serial
number of machine.
Before substituting another tool or procedure, you should
be satisfied that neither personal injury nor damage to the
component will result.
1-2
PT / PG / PD REPAIR
1.6
GENERAL
1
Application
PT Series
PD Series
The WACKER PT Series Trash Pumps are high capacity, centrifugal pumps designed for pumping wastewater.
Their heavy duty construction allows them to handle solid
particles and debris suspended in the water. Refer to
“Technical Data” for maximum solid size.
The WACKER PD Series Diaphragm Pumps are ideal for
pumping seepage water, mud and slurries from excavations, trenches, industrial sumps, septic tanks or holding
ponds. Their heavy duty construction allows them to
handle solid particles and debris suspended in the water.
Refer to “Technical Data” for maximum solid size.
Close internal tolerances provide suction lifts up to 25'
(7.6m) and high discharge capacities.
These pumps are desirable in applications where large
volumes of water must be pumped or high discharge
pressures are required.
The PD diaphragm design, while capable of providing
suction lifts up to 25' (7.6m), cannot achieve the high
discharge capacities and pressures produced by PT and
PG Series centrifugal type pumps. Discharge head is
limited to 25' (7.6m).
CAUTION: These pumps are not intended for the
CAUTION: DO NOT pump gasoline, diesel fuel, oil or
pumping of heavy sludges or slurries, mud, corrosive or
volatile liquids. DO NOT pump gasoline, diesel fuel, oil
or corrosive chemicals.
1027SD33
other volatile or corrosive chemicals.
1011SD33
PG Series
The WACKER PG Series Dewatering Pumps are high
capacity, centrifugal pumps similar in operation to the PT
Series. The centrifugal design gives them the same high
performance characteristics found in the PT Pumps.
The PG Pump can handle small particles up to 0.25"
(6.5mm) in diameter. They are not designed to handle
large solids or debris particles which may occur in certain
applications. Refer to “Technical Data” for maximum
solid size.
These pumps should only be used in applications where
relatively clean water is being pumped. Pumping volume
is less than similar size PT Pumps.
CAUTION: These pumps are not intended for the
pumping of heavy sludges or slurries, mud, corrosive or
volatile liquids. DO NOT pump gasoline, diesel fuel, oil
or corrosive chemicals.
1027SD32
1-3
1 GENERAL
1.7
PT / PG / PD REPAIR
Operating Safety
Familiarity and proper training are required for the safe operation of equipment! Equipment operated improperly or by
untrained personnel can be dangerous! Read the operating instructions contained in both this manual and the engine
manual and familiarize yourself with the location and proper use of all controls.
WARNING
NEVER allow improperly trained people to operate
this equipment. People operating this equipment
must be familiar with the potential risks and hazards associated with it.
NEVER open pump housing cover while pump is
operating or start pump with the cover off. The
rotating impeller inside the pump can cut or sever
objects caught in it.
NEVER touch engine or muffler while pump is
operating or immediately after it has been turned
off. These areas get hot and may cause burns.
NEVER block or restrict flow from inlet line or
discharge line. Remove kinks from discharge line
before starting pump. Operation with a blocked
inlet line or discharge line can cause water inside
pump to overheat.
NEVER use accessories or attachments which are
not recommended by WACKER for this equipment. Damage to equipment and/or injury to user
may result.
NEVER pump volatile, flammable or low flash point
fluids. These fluids could ignite or explode.
NEVER pump corrosive chemicals or water containing toxic substances. These fluids could create
serious health and environmental hazards. Contact local authorities for assistance.
NEVER open priming plug when pump is hot.
Never loosen or remove inlet or discharge hose
fittings when pump is hot. Hot water inside could
be pressurized much like the radiator on an automobile. Allow pump to cool to the touch before
loosening plug and before loosening or removing
inlet or discharge hose fittings.
1.8
ALWAYS read, understand, and follow procedures in Operator’s Manual before attempting to
operate equipment.
ALWAYS be sure operator is familiar with proper
safety precautions and operation techniques before using pump.
ALWAYS be sure pump is on a firm, level surface
and will not tip, roll, slide, or fall while operating.
ALWAYS close fuel valve on engines equipped with
one, when pump is not being operated.
ALWAYS store equipment properly when it is not
being used. Equipment should be stored in a clean,
dry location out of the reach of children.
Operator Safety while using Internal Combustion Engines
Internal combustion engines present special hazards during operation and fueling! Failure to follow the safety
guidelines described below could result in severe injury or death.
WARNING
DO NOT smoke while operating pump.
DO NOT spill fuel when refueling engine.
DO NOT smoke when refueling engine.
DO NOT operate near open flames.
DO NOT refuel hot or running engine.
ALWAYS refill fuel tank in well-ventilated area.
DO NOT refuel engine near open flame.
ALWAYS replace fuel tank cap after refueling.
1-4
PT / PG / PD REPAIR
1.9
GENERAL
1
Service Safety
Poorly maintained equipment can become a safety hazard! In order for the equipment to operate safely and properly
over a long period of time, periodic maintenance and occasional repairs are necessary.
WARNING
DO NOT attempt to clean or service pump while it is
running. Rotating parts can cause severe injury.
ALWAYS operate pump with all safety devices
and guards in place and in working order.
DO NOT crank a flooded engine with the spark
plug removed on gasoline-powered engines.
Fuel trapped in the cylinder will squirt out the
spark plug opening.
ALWAYS keep area around muffler free of debris such
as leaves, paper, cartons, etc. A hot muffler could
ignite them, starting a fire.
DO NOT test for spark on gasoline-powered
engines, if engine is flooded or the smell of
gasoline is present. A stray spark could ignite
fumes.
DO NOT use gasoline or other types of fuels or
flammable solvents to clean parts, especially in
enclosed areas. Fumes from fuels and solvents
can accumulate and become explosive.
ALWAYS replace worn or damaged components
with spare parts designed and recommended by
WACKER for servicing this machine.
ALWAYS remove or disconnect spark plug on pumps
equipped with gasoline engines, before servicing pump,
to avoid accidental start-up.
ALWAYS handle impeller carefully. The impeller can
develop sharp edges which can cut.
1-5
1 GENERAL
PT / PG / PD REPAIR
1.10 Technical Data (PT2)
in. (mm)
20 (510)
24 (610)
22 (560)
1005SD44
Sound Measurements
The required sound specifications, per Appendix 1, Paragraph 1.7.4.f of the EC-Machine Regulations, are:
PT2A
PT2B
PT2R
PT2Y
Sound pressure level at
operator's location
(LpA)
86 dB (A)
86 dB (A)
84 dB (A)
83 dB (A)
Sound power level
(LWA)
97 dB (A)
97 dB (A)
94 dB (A)
96 dB (A)
These sound values were determined according to ISO 3744 for the sound power level (LWA) and ISO 6081 for the
sound pressure level (LpA) at the operator’s location.
The sound measurements were obtained with the unit operating on pavement at nominal speed.
1-6
PT / PG / PD REPAIR
1.10
GENERAL
1
Technical Data (PT2) cont.
Engine
PT2A
PT2B
PT2R
PT2Y
Engine Make
Honda
Briggs
Robin
Yanmar
Engine Model
GX 160 K1 QX
132232, 133232
WO1-170
L48AE-D
5.5 (4.1)
5.0 (3.7)
5.0 (3.7)
5.0 (3.7)
(NGK) BPR 6ES
BOSCH WR 7DC
CHAMPION
RCJ8
(NGK) B6HS or
CHAMPION L86C
—
0.028–0.031
(0.7–0.8)
0.030 (0.76)
0.024–0.028
(0.6–0.7)
—
Rated Power
Spark Plug
Electrode Gap
Hp (kW)
type
in. (mm)
Engine Speed - full load
rpm
3500 ± 100
3500 ± 100
3500 ± 200
3400 ± 100
Engine Speed - idle
rpm
1600 ± 100
1600 ± 100
1600 ± 100
1600 ± 100
Air Cleaner
type
Dual element
Dry type, paper
element w/foam
precleaner
Dual element
Dry type, paper
element w/foam
precleaner
SAE 10W30
SF, SE, SD, SC
SAE 10W30
SF, SE, SD, SC
SAE 10W30
SF, SE, SD, SC
SAE 10W30
SAE 20W40
20 (600)
20 (600)
21 (650)
27 (800)
Engine Lubrication
Engine Oil Capacity
Fuel
Fuel Tank Capacity
oil grade
service class
oz. (ml)
Regular Unleaded
Gasoline
type
No. 2 Diesel cetane > 45
qts. (l)
4.0 (3.8)
3.0 (2.8)
3.8 (3.6)
2.6 (2.5)
lbs. (kg)
134 (61)
133 (60)
134 (61)
145 (66)
*Max. Suction Lift
ft. (m)
*25 (7.5)
*25 (7.5)
*25 (7.5)
*25 (7.5)
Max. Total Head
ft. (m)
100 (30)
100 (30)
100 (30)
89 (27)
Pump
Weight
Mechanical Seal Lubrication
oil grade
oz. (ml)
SAE 30
Approx. 4 (120)
SAE 30
Approx. 4 (120)
SAE 30
Approx. 4 (120)
SAE 30
Approx. 4 (120)
Suction / Discharge Dia.
in. (mm)
2 (50)
2 (50)
2 (50)
2 (50)
Max. Solid Size
in (mm)
1 (25)
1 (25)
1 (25)
1 (25)
* Based on pump operating at sea level. Maximum suction lift will be less at higher altitudes.
1-7
1 GENERAL
PT / PG / PD REPAIR
1.11 Technical Data (PT3)
in. (mm)
31 (790)
20 (510)
25 (635)
PT3
WACKER
1007SD50
Sound Measurements
The required sound specifications, per Appendix 1, Paragraph 1.7.4.f of the EC-Machine Regulations, are:
PT3A
PT3V
Sound pressure level at
operator's location
(LpA)
86 dB (A)
Sound power level
(LWA)
97 dB (A)
PT3Y
These sound values were determined according to ISO 3744 for the sound power level (LWA) and ISO 6081 for the
sound pressure level (LpA) at the operator’s location.
The sound measurements were obtained with the unit operating on pavement at nominal speed.
1-8
PT / PG / PD REPAIR
1.11
GENERAL
1
Technical Data (PT3) cont.
Engine
PT3A
PT3V
PT3Y
Engine Make
Honda
Vanguard
Yanmar
Engine Model
GX 240 K1 QA
185432
L70AE-D
8.0 (6.0)
9.0 (7.0)
7.0 (5.0)
(NGk) BPR 6ES
BOSCH WR 7DC
CHAMPION
RC12YC
—
0.028–0.031
(0.7–0.8)
0.030 (0.76)
—
Rated Power
Spark Plug
Electrode Gap
Hp (kW)
type
in. (mm)
Engine Speed - full load
rpm
3500 ± 100
3500 ± 100
3400 ± 100
Engine Speed - idle
rpm
1600 ± 100
1600 ± 100
1600 ± 100
Air Cleaner
type
Dual element
Dual element
Dry type, paper
element w/foam
precleaner
SAE 10W30
SF, SE, SD, SC
SAE 10W30
SF, SE, SD, SC
SAE 10W30
SAE 20W40
37 (1100)
41 (1200)
37 (1100)
Regular Unleaded
Gasoline
Regular Unleaded
Gasoline
No. 2 Diesel cetane > 45
qts. (l)
6.4 (6.1)
6.3 (6.0)
3.6 (3.5)
lbs. (kg)
164 (74)
177 (80)
187 (85)
*Max. Suction Lift
ft. (m)
*25 (7.5)
*25 (7.5)
*25 (7.5)
Max. Total Head
ft. (m)
95 (29)
95 (29)
82 (25)
Engine Lubrication
Engine Oil Capacity
Fuel
Fuel Tank Capacity
oil grade
service class
oz. (ml)
type
Pump
Weight
Mechanical Seal Lubrication
oil grade
oz.
SAE 30
Approx. 4 (120)
SAE 30
Approx. 4 (120)
SAE 30
Approx. 4 (120)
Suction / Discharge Dia.
in. (mm)
3 (75)
3 (75)
3 (75)
Max. Solid Size
in. (mm)
1.5 (38)
1.5 (38)
1.5 (38)
* Based on pump operating at sea level. Maximum suction lift will be less at higher altitudes.
1-9
1 GENERAL
PT / PG / PD REPAIR
1.12 Technical Data (PTS4)
in. (mm)
35 (890)
36 (915)
35 (890)
1020SD70
Sound Measurements
The required sound specifications, per Appendix 1, Paragraph 1.7.4.f of the EC-Machine Regulations, are:
PTS4V
Sound pressure level at
operator's location
(LpA)
—
Sound power level
(LWA)
103 dB (A)
These sound values were determined according to ISO 3744 for the sound power level (LWA) and ISO 6081 for the
sound pressure level (LpA) at the operator’s location.
The sound measurements were obtained with the unit operating on pavement at nominal speed.
1-10
PT / PG / PD REPAIR
1.12
GENERAL
1
Technical Data (PTS4) cont.
Engine
PTS4V
Engine Make
Vanguard
Engine Model
303447
Rated Power
Spark Plug
Electrode Gap
Hp (kW)
type
16 (12)
Champion RC12YC
in. (mm)
0.030 (0.76)
Engine Speed - full load
rpm
3600 ± 100
Air Cleaner
type
Dual element
Engine Lubrication
Engine Oil Capacity
Fuel
Fuel Tank Capacity
oil grade
service class
oz. (ml)
type
qts. (l)
SAE 10W30 ⇓40°F (5°C) or SAE 30W ⇑40°F (5°C)
SF, SE, SG
48 (1400)
Regular Unleaded Gasoline
3.7 (14)
Volt / CCA
amp-hour / size
12 / 230
32 / 22NF
lbs. (kg)
360 (163)
*Max. Suction Lift
ft. (m)
*25 (7.5)
Max. Total Head
ft. (m)
106 (32)
Mechanical Seal Lubrication
oil grade
oz. (ml)
SAE 30
5 (150)
Suction / Discharge
Diameter
in. (mm)
4 (100)
Max. Solid Size
in. (mm)
2 (50)
Battery
Pump
Weight
* Based on pump operating at sea level. Maximum suction lift will be less at higher altitudes.
1-11
1 GENERAL
PT / PG / PD REPAIR
1.13 Technical Data (PG2 / PG3)
in. (mm)
B
A
C
1019SD92
PG2
PG3
A
in. (mm)
13.7 (350)
14.7 (375)
B
in. (mm)
18.5 (470)
20.0 (505)
C
in. (mm)
14.0 (360)
17.7 (450)
Sound Measurements
The required sound specifications, per Appendix 1, Paragraph 1.7.4.f of the EC-Machine Regulations, are:
PG2
PG3
Sound pressure level at
operator's location
(LpA)
84 dB (A)
87 dB (A)
Sound power level
(LWA)
94 dB (A)
97 dB (A)
These sound values were determined according to ISO 3744 for the sound power level (LWA) and ISO 6081
for the sound pressure level (LpA) at the operator’s location.
The sound and vibration specifications were obtained with the unit operating on pavement at nominal engine
speed.
1-12
PT / PG / PD REPAIR
1.13
GENERAL
1
Technical Data (PG2 / PG3) cont.
Engine
PG2
PG3
Engine Make
Honda
Honda
Engine Model
GX 120 W1 B4
GX 160 W1 C2
4.0 (3.0)
5.5 (4.1)
(NGK) BPR 6ES
(NGK) BPR 6ES
0.028–0.031
(0.7–0.8)
0.028–0.031
(0.7–0.8)
Rated Power
Spark Plug
Electrode Gap
Hp (kW)
type
in. (mm)
Engine Speed - full load
rpm
3000 ± 100
3000 ± 100
Engine Speed - idle
rpm
1600 ± 100
1600 ± 100
Air Cleaner
type
Single element
Single element
SAE 10W30
SF, SG
SAE 10W30
SF, SG
20 (600)
20 (600)
Regular Unleaded Gasoline
Regular Unleaded Gasoline
2.6 (2.5)
4.0 (3.8)
in. (mm)
Inlet: 0.006 (0.15)
Outlet: 0.008 (0.20)
Inlet: 0.006 (0.15)
Outlet: 0.008 (0.20)
lbs. (kg)
60 (27)
73 (33)
*Max. Suction Lift
ft. (m)
25 (7.5)
25 (7.5)
Max. Total Head
ft. (m)
98 (30)
98 (30)
Suction / Discharge Dia.
in. (mm)
2 (50)
2 (50)
Max. Solid Size
in. (mm)
0.25 (6)
0.25 (6)
Engine Lubrication
Engine Oil Capacity
Fuel
Fuel Tank Capacity
Valve Clearance
oil grade
service class
oz. (ml)
type
qts. (l)
Pump
Weight
* Based on pump operating at sea level. Maximum suction lift will be less at higher altitudes.
1-13
1 GENERAL
PT / PG / PD REPAIR
1.14 Technical Data (PD2 / PD3)
in. (mm)
PDT 2A/3A
PDT2A - 25 (635)
PDT3A - 29.5 (750)
PDT2A - 40 (1015)
PDT3A - 40 (1015)
PDT2A - 22.5 (572)
PDT3A - 24 (610)
PDI 2A/3A
1010SD43
PDI2A - 17.5 (445)
PDI3A - 17.5 (445)
PDI2A - 40 (1015)
PDI3A - 40 (1015)
PDI2A - 22.5 (572)
PDI3A - 24 (610)
1017SD02
Sound Measurements
The required sound specifications, per Appendix 1, Paragraph 1.7.4.f of the EC-Machine Regulations, are:
PD2
PD3
Sound pressure level at
operator's location
(LpA)
82 dB (A)
Sound power level
(LWA)
92 dB (A)
These sound values were determined according to ISO 3744 for the sound power level (LWA) and ISO 6081 for the
sound pressure level (LpA) at the operator’s location.
The sound measurements were obtained with the unit operating on pavement at nominal speed.
1-14
PT / PG / PD REPAIR
1.14
GENERAL
1
Technical Data (PD2 / PD3) cont.
Engine
PD2A
PD3A
Engine Make
Honda
Engine Model
GX 120 K1 QX
Rated Power
Spark Plug
Electrode Gap
Hp (kW)
4.0 (3.0)
(NGK) BPR 6ES
BOSCH WR 7DC
type
0.028–0.031
(0.7–0.8)
in. (mm)
Engine Speed - full load
rpm
3000 ± 100
Engine Speed - idle
rpm
1600 ± 100
Air Cleaner
type
Dual element
Engine Lubrication
Engine Oil Capacity
Fuel
Fuel Tank Capacity
oil grade
service class
SAE 10W30
SF, SE, SD, SC
oz. (ml)
20 (600)
type
Regular Unleaded Gasoline
qts. (l)
Pump
2.6 (2.5)
PDT / PDI 2A
PDT / PDI 3A
lbs. (kg)
114 (52)
138 (63)
*Max. Suction Lift
ft. (m)
25 (7.5)
25 (7.5)
Max. Discharge Head
ft. (m)
25 (7.5)
25 (7.5)
Max. Total Head
ft. (m)
50 (15)
50 (15)
Max. Discharge
gpm (m³h)
50 (11)
88 (20
Weight
Gear Case Lubrication
oil grade
oz. (ml)
SAE 30
32 (1000)
SAE 30
32 (1000)
Suction / Discharge Dia.
in. (mm)
2 (50)
3 (75)
Max. Solid Size
in. (mm)
1.25 (30)
1.75 (45)
* Based on pump operating at sea level. Maximum suction lift will be less at higher altitudes.
1-15
1 GENERAL
PT / PG / PD REPAIR
1.15 Performance Curves
These values are average values based on pumps operating at sea level. To determine accurate values for pump
capacity, altitude and other factors affecting suction lift and discharge head must be considered. Consult WACKER
Corporation for additional information.
PT Pumps
Top curve - Gasoline powered pumps
Bottom curve - Diesel powered pumps
On the PT Series, diesel powered pumps operate at lower engine speeds than those driven by gasoline powered
engines. This reduces the amount of water which they can displace and also lowers the discharge pressure, resulting
in a slightly lower performance curve.
TO READ PUMP CAPACITY: first, determine the total head being applied to the pump and read across to the curve
representing the correct engine type and suction lift.
Note: Each leg on the curve indicates a different suction lift.
After locating this point on the curve, read down to find the approximate capacity for the pump.
PT2
T o ta l H e a d
M e te rs
F e e t
1 2 0
3 6
P T 2 A , P T 2 B , P T 2 R a t 3 6 0 0 R P M
P T 2 Y a t 3 4 0 0 R P M
1 1 0
3 2
1 0 0
2 8
P T 2 A /B /R
9 0
8 0
2 4
7 0
P T 2 Y
2 0
6 0
1 6
5 0
2 0 ft.
6 .1 m
4 0
1 2
1 5 ft.
4 .6 m
3 0
8
1 0 ft.
3 .0 m
2 0
m
4
1 0
0
G P M
0
3
/ H R
1-16
5 ft.
1 .5 m
1033SD95
0
0
2 5
5
5 0
1 0
7 5
1 5
1 2 5
1 0 0
2 0
2 5
1 5 0
3 0
1 7 5
3 5
4 0
2 0 0
4 5
2 2 5
5 0
PT / PG / PD REPAIR
1.15
GENERAL
1
Performance Curves (cont.)
PT3
T o ta l H e a d
M e te rs
F e e t
1 2 0
3 6
P T 3 A a n d P T 3 V a t 3 5 0 0 R P M
P T 3 Y a t 3 4 0 0 R P M
1 1 0
3 2
1 0 0
2 8
P T 3 A /V
9 0
8 0
2 4
7 0
2 0
6 0
1 6
P T 3 Y
5 0
4 0
1 2
3 0
8
2 0
4
1 0
0
G P M
0
3
m
2 0 ft.
6 .1 m
1 5 ft.
4 .6 m
1 0 ft.
3 .0 m
5 ft.
1 .5 m
1033SD96
2 5
0
/ H R
5 0
7 5
1 0
0
1 2 5
1 0 0
1 5 0
3 0
2 0
1 7 5
2 0 0
2 2 5
5 0
4 0
2 7 5
2 5 0
3 2 5
3 0 0
6 0
3 5 0
3 7 5
4 0 0
7 0
8 0
9 0
7 0 0
8 0 0
9 0 0
4 2 5
PTS4
T o ta l H e a d
M e te rs
F e e t
1 2 0
3 6
P T S 4 V
1 1 0
a t 3 6 0 0 R P M
3 2
1 0 0
2 8
9 0
8 0
2 4
7 0
2 0
6 0
1 6
5 0
1 2
4 0
3 0
8
2 0 ft.
6 .1 m
2 0
1 5 ft.
4 .6 m
4
1 0 ft.
3 .0 m
5 ft.
1 .5 m
1 0
0
1033SD97
0
0
0
1 0 0
2 0
2 0 0
4 0
3 0 0
6 0
4 0 0
8 0
5 0 0
1 0 0
6 0 0
1 2 0
1 4 0
1 6 0
1 8 0
2 0 0
m
G P M
3
/ H R
1-17
1 GENERAL
1.15
PT / PG / PD REPAIR
Performance Curves (cont.)
PG Pumps
Curves show maximum capacities with pump operating
at minimum suction lift only.
PG2 / PG3
F T
m
3 5
Engine operating speed of 3600 RPM.
3 0
1 0 0
2 5
8 0
2 0
P G
6 0
3
1 5
4 0
P G
1 0
2 0
5
0
m
2
0
3
0
/h
1 0
0
G P M
2 0
1 0 0
5 0
3 0
1 5 0
4 0
5 0
2 0 0
2 5 0
6 0
3 0 0
1033SD92
PD Pumps
Both Suction Lift and Discharge head limited to 25' (7.6m)
maximum.
Total head cannot exceed 50' (15.2m).
PD3
Engine operating speed of 3600 RPM.
p s i
m
ft.
1 0
1 0
1 0
m
/h
2
2 0
5
3 0
4 0
1 0
g p m
m
1033SD93
1-18
5
5 0
1 0
ift
io n L
S u c t
5 ft.
2
2
g p m
3
1 0
4
5
2
ift
io n L
S u c t
1 0 ft.
ift
io n L
S u c t
1 5 ft.
2
4
L ift
tio n
S u c
5 ft.
1 0
4
1 5
6
L ift
c tio n
. S u
1 0 ft
4
ift
io n L
S u c t
1 5 ft.
1 5
6
io n L ift
2 0 ft. S u c t
ft
c tio n L i
2 5 ft. S u
2 0
2 0
6
8
P D T 3 A
P D I 3 A
L ift
u c tio n
2 0 ft. S
P D T 2 A
P D I 2 A
2 5
6
2 5
tio n L ift
2 5 ft. S u c
8
8
ft.
8
PD2
p s i
m
3
/h
2
2 0
5
3 0
4 0
5 0
1 0
6 0
7 0
1 5
8 0
9 0
2 0
1033SD94
PT / PG / PD REPAIR
OPERATION 2
Table of Contents
2.1
2.2
2.3
2.4
2.5
2.6
Factors Affecting Pump Performance ...................................................... 2-2
High Altitude Operation ........................................................................... 2-3
Before Starting ........................................................................................ 2-4
Starting / Stopping ................................................................................... 2-6
Hoses and Clamps ................................................................................ 2-11
Pump Wrench ....................................................................................... 2-12
2-1
2 OPERATION
PT / PG / PD REPAIR
2.1 Factors Affecting Pump
Performance
Certain conditions outside the pump will influence the
pump's output and ability to lift water. These factors can
be critical if the pump is operating near its maximum
limits.
Before servicing a pump, review the current application
and conditions under which it is operating.
Suction Lift
Water Temperature
As the height of the pump above the water increases,
pump output decreases. Always locate the pump as
close to the water as possible. See Section 1.15 Performance Curves
As water temperature increases above 65°F (180°C) the
maximum practical suction lift will decrease. For most
normal operating temperatures pump performance is not
greatly affected.
Total Head / Discharge Head
However, certain conditions may arise where water
temperature could be a factor. Allowing the prime water
to sit in the pump housing on a warm day could raise the
water temperature inside the pump case to the point
where the pump is unable to create sufficient vacuum to
pull the water up to it when started. Replace the water in
the pump case with fresh cold water.
Discharge head is the height of the discharge hose above
the pump.
Total head is a measure of the vertical distance the pump
must lift water.
TOTAL HEAD = Suction Lift + Discharge Head + Frictional losses.
Pump output decreases as the discharge head or total
head increases. See Section 1.15 Performance Curves
Altitude
Atmospheric pressure varies above or below sea level.
At altitudes above sea level the maximum practical
suction lift is reduced. See Section 2.2 High Altitude
Operation.
Frictional Loss
The friction created by the liquid as it flows through a
hose, pipe, strainer or fitting creates a resistance that the
pump must overcome. These losses increase with the
length of the hose, number of fittings and amount of water
(GPM) flow. Frictional losses occur in both suction and
discharge lines. In long hoses, these losses will accumulate to reduce pump output.
Suspended Soils
Suspended soils, such as sand or dirt, may add to the
weight of the water, reducing the maximum practical
suction lift. This condition would most often be observed
in diaphragm type pumps operating at high lifts and
pumping heavy sludges and mud mixtures.
2-2
While performing a SUCTION TEST the water may heat
up sufficiently to give a faulty gauge reading. Complete
testing within 3–4 minutes or stop engine and refill pump
case with cold water. If possible, run continuous stream
of cold water into pump case during testing.
PT / PG / PD REPAIR
2.2
OPERATION 2
High Altitude Operation
When a pump is operated at elevations above sea level,
the lower atmospheric pressure has a double effect on
pump performance.
1. The lower atmospheric pressures cannot support as
high a column of water, so the maximum suction lift
decreases.
2. The lower atmospheric pressure reduces the horsepower output of the gas engine, causing it to lose
speed. This often results in a loss of capacity and
discharge head of the pump.
At elevations above sea level, the maximum rated suction lift of the pump should be reduced.
On pumps driven by internal combustion engines, a
power loss of approximately 3% for every 1000 ft. (250m)
of elevation occurs and pump capacity and discharge
head should be reduced accordingly.
Maximum suction lifts at higher elevations
ALTITUDE
ft. (m)
MAXIMUM SUCTION LIFT
ft. (m)
Sea Level
25.0 (7.6)
2000 (600)
22.0 (6.7)
4000 (1200)
19.5 (5.9)
6000 (1800)
17.3 (5.3)
8000 (2400)
15.5 (4.7)
10000 (3000)
14.3 (4.4)
Loss of performance at higher elevations
ALTITUDE
ft. (m)
DISCHARGE
CAPACITY
DISCHARGE
HEAD
Sea Level
100%
100%
2000 (600)
97%
95%
4000 (1200)
95%
91%
6000 (1800)
93%
87%
8000 (2400)
91%
83%
10000 (3000)
88%
78%
2-3
2 OPERATION
2.3
PT / PG / PD REPAIR
Before Starting
PT & PG Series
1. Read safety instructions at the beginning of manual.
2. Place pump as near to water as possible, on a firm,
flat, level surface.
3. To prime a PT or PG Series pump, remove priming
plug (a) and fill pump case with water. If the pump
case is not filled with water before starting, it will not
begin pumping.
WARNING
DO NOT open priming plug or loosen hose fittings if
pump is hot! Water or vapor inside pump may be
under pressure.
4. Check for leaks between pump and engine. If water is
leaking, the seal inside pump is worn or damaged.
Continued operation may cause water damage to
engine.
c
a
5. Check that hoses are securely attached to pump.
Suction hose (b) must not have any air leaks. Tighten
hose clamps (c) and coupling (d).
Check that discharge hose (e) is not restricted. Lay
hose out as straight as possible. Remove any twists
or sharp bends from hose which may block the flow of
water.
6. Make sure suction strainer (f) is clean and securely
attached to end of hose. The strainer is designed to
protect the pump by preventing large objects from
being pulled into the pump.
CAUTION: Strainer should be positioned so it will
remain completely under water. Running the pump
with the strainer above water for long periods can
damage the pump.
7. Check fuel level, engine oil level, and condition of air
cleaner.
d
c
e
b
c
f
1003SD38
2-4
PT / PG / PD REPAIR
2.3
OPERATION 2
Before Starting (cont.)
PD Series
Diaphragm pumps are self priming and seldom need to
have water added to them before starting. However, if the
pump has not been used for several weeks and the
rubber valves inside it are dry, adding water through the
surge chamber (g) will help the valves seal and shorten
the amount of time required for the pump to prime.
1. Read safety instructions at the beginning of manual.
2. Place pump as near to water as possible, on a firm,
flat, level surface.
3. Check that hoses are securely attached to pump.
Suction hose (h) must not have any air leaks. Check
that all hose clamps (j) and couplings (k) are tight.
Check that cap on surge chamber (g) is tight.
4. Check that discharge hose (m) is not blocked. Lay
hose out as straight as possible. Remove any twists
or sharp bends from hose which may block the flow of
water.
Note: Operating the pump with any part of the
discharge line positioned higher than 25' (7.5 m)
above the pump can cause backflow into the pump
and damage pump components.
5. Make sure suction strainer (n) is clean and securely
attached to end of hose. The strainer is designed to
protect the pump by preventing large objects from
being pulled into the pump.
Position strainer so it will remain under water as water
level drops.
6. Check fuel level, engine oil level, and condition of air
cleaner.
g
j
m
k
k
j
h
j
n
1010SD45
2-5
2 OPERATION
2.4
PT / PG / PD REPAIR
Starting / Stopping
PT2A / PT3A / PG2 / PG3 / PD2A / PD3A
1. Open fuel valve by moving lever to the right (a1).
Note: If engine is cold, move choke lever to close
position (b1 ). If engine is hot, set choke to open
position (b2 ).
2. Turn engine switch to “ON” (c1).
To Stop
1. Reduce engine RPM to idle by moving throttle completely to right (d2).
2. Turn engine switch to “OFF” (c2).
3. Close fuel valve by moving lever to the left (a2).
3. Open throttle by moving it slightly to left (d1).
4. Pull starter rope (e).
Note: If the oil level in the engine is low, the engine will
not start. If this happens, add oil to engine. Some
engines are equipped with an oil alert light (f) that will
come on while pulling the starter rope.
5. Open choke as engine warms (b2).
6. Open throttle fully to operate pump.
CHOKE
d2
b2
a1
d1
b1
a2
1005SD50
1005SD51
1005SD45
f
e
c2
c1
2-6
1005SD48
1005SD49
PT / PG / PD REPAIR
2.4
OPERATION 2
Starting / Stopping (cont.)
PT2B
1. Move choke lever (g) to “CHOKE” position (g2).
To Stop
2. Move throttle control (h) to “FAST” position (h3).
1. Move throttle control to “OFF” position (h1).
3. Pull starter rope (i).
CAUTION: Do not move choke lever to “CHOKE”
position to stop engine. Backfire or engine damage may
occur.
Note: Some engines are equipped with an oil alert
light (j) that will flash while pulling the starter rope. If
this happens, the oil level is too low and the engine will
not start. Replenish oil supply before attempting to
start engine.
4. When engine starts, move throttle control to “IDLE”
position (h2) and allow engine to warm up a few
minutes.
5. Move choke lever to “RUN” position (g1) when engine
is warm.
6. Move throttle control to “FAST” position (h3) to operate pump.
g1
g2
RUN
CHOKE
h
g
OFF
h1
IDLE
h2
FAST
h3
j
1013SD73
1013SD77
i
2-7
2 OPERATION
2.4
PT / PG / PD REPAIR
Starting / Stopping (cont.)
PT2Y / PT3Y
1. Open fuel valve (a2).
To Stop
2. Push the engine throttle lever to “run” (b2).
Place the engine throttle in the “Stop” position (b1). If
engine keeps running, stop engine by closing fuel valve
(a1).
3. Pull out starter handle until you feel strong resistance,
then let it return slowly.
DO NOT stop engine using the decompression lever.
4. Push down decompression lever (c).
Note: Lever will return automatically when the starter
is pulled.
5. Pull starter handle to start engine. If engine does not
start, repeat steps 3 and 4.
CAUTION: NEVER operate engine without air cleaner.
Engine will be damaged.
a1
c
a2
b1
b2
1003SD39
2-8
PT / PG / PD REPAIR
2.4
OPERATION 2
Starting / Stopping (cont.)
PT3V
1. Open fuel valve. (d1).
To Stop
If engine is cold, move choke lever to the “CHOKE”
position (e1 ). If engine is hot, set choke to the “RUN”
position (e2 ).
2. Move throttle control to the fast (
) position. (f1).
3. Press stop switch to the on position. (g1).
1. Reduce engine RPM by moving throttle completely to
the idle (
) position (f2).
2. Press engine switch to STOP (g2).
3. Close fuel valve (d2).
4. Pull starter rope (h).
The engine is equipped with a low oil protection
system. If the oil level is low, the engine will not start
and the stop switch will flicker while the starter rope
is pulled. If this happens, add oil to the engine.
5. Open choke to “RUN” position as engine warms (e2).
6. Keep engine throttle in the fast position (
) while
operating pump.
h
g2
e1
f1
g1
e2
f2
d1
d1
d2
1007SD56
2-9
2 OPERATION
2.4
PT / PG / PD REPAIR
Starting / Stopping (cont.)
PTS4V
1. Open fuel valve (a1).
To Stop
2. If engine is cold, pull choke control out (b1 ). If engine
is hot, push choke control in (b2 ).
1. Reduce engine RPM by moving throttle completely to
the idle position (c2).
3. Move throttle control to the fast position (c1).
2. Turn engine switch to the stop position (d1).
4. Turn key switch to the start position (d3) and hold until
engine starts.
3. Close fuel valve (a2).
CAUTION: Do not crank engine longer than 15 seconds
at a time. Extended cranking can damage starter motor.
5. To start engine using manual start: Turn key switch to
the run position (d2). Pull starter rope (e) rapidly to
start engine.
Leave key in run position (d2) while engine is running.
Note: The engine is equipped with a low oil protection
system. If the oil level is low, the engine will not start.
Check engine oil level if engine does not start.
6. Push choke in as engine warms (b2).
7. Keep engine throttle in the fast position while operating pump.
b1
b2
a2
a1
d1
c1
d2
d3
e
c2
1020SD71
2-10
PT / PG / PD REPAIR
2.5
OPERATION 2
Hoses and Clamps
Suction Hose
PT / PG Series
Suction hoses (f) must be rigid enough not to collapse
when pump is operating.
h
Discharge Hose
Discharge hoses (g) are usually thin-walled collapsible
hoses. Rigid hoses similar to those used as suction
hoses may also be used as discharge hoses.
f
g
Note: Suction and discharge hoses are available from
WACKER. Contact your nearest dealer for more information.
Suction Hose to Inlet Coupling
Two clamps (h) are recommended for connection of
suction hoses to inlet coupling.
Note: This connection is important. Even a small air leak
on the suction side of pump will prevent the pump from
priming.
1003SD40
PD Series
Other Hose Connections
For other hose connections, one T-bolt or worm-gear
type clamp is usually sufficient to hold hoses in place. In
some cases, slight variances in hose diameters may
make it necessary to add more clamps in order to
maintain tight connections.
f
g
h
1010SD46
1020SD72
2-11
2 OPERATION
2.6
PT / PG / PD REPAIR
Pump Wrench
The wrench (a) supplied with the pump can be used to
loosen and tighten: hose couplings, knobs on pump
cover, priming plug, and drain plug on front cover.
PT2 / PT3 Series
Store wrench on pump frame.
a
1003SD41
PTS4 Series
a
1020SD72
2-12
PT / PG / PD REPAIR
PT SERIES PUMPS 3
Table of Contents
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.17
3.18
3.19
3.20
3.21
3.22
3.23
3.24
Description and Operation ....................................................................... 3-2
Periodic Maintenance Schedule .............................................................. 3-3
Engine Oil ............................................................................................... 3-4
Air Cleaner .............................................................................................. 3-6
Spark Plug .............................................................................................. 3-9
Carburetor Adjustment .......................................................................... 3-10
Adjusting Valve Clearance .................................................................... 3-12
Adjusting Engine Speed ........................................................................ 3-12
Cleaning Sediment Cup ........................................................................ 3-13
Mechanical Seal Lubrication ................................................................. 3-14
Adjusting Impeller Clearance ................................................................ 3-14
Cleaning Pump ...................................................................................... 3-15
Storage ................................................................................................. 3-15
PT2 Pump Assembly ............................................................................. 3-16
PT3 Pump Assembly ............................................................................. 3-18
PTS4V Pump Assembly ........................................................................ 3-20
Inspecting Pump ................................................................................... 3-22
Flapper Valve ........................................................................................ 3-23
Frame Assembly ................................................................................... 3-24
Impeller ................................................................................................. 3-26
Pump Seals ........................................................................................... 3-28
Inspecting Pump Components .............................................................. 3-30
Testing .................................................................................................. 3-32
Troubleshooting .................................................................................... 3-33
3-1
3 PT SERIES PUMPS
3.1
PT / PG / PD REPAIR
Description and Operation
PT Series Pumps use an impeller (1) and volute (2) to
create the suction and discharge pressures required for
pump operation.
The flapper valve (8) at the pump inlet, closes when the
pump stops. This valve seals the inlet port and prevents
the prime water in the suction hose from being lost.
The impeller is bolted directly to the engine drive shaft (3)
and rotates inside the volute casing. Water is drawn into
the pump inlet (4) by the low pressure area created at the
eye of the impeller. Vanes on the impeller move the liquid
into the volute where it is gathered and directed to the
discharge port (5).
Pump case is easily filled with water by removing the
priming plug (9).
A moveable tapered ring (6) set inside the volute, can be
shimmed to maintain close tolerances between the volute and impeller to maintain pump efficiency.
A mechanical seal (7) mounted behind the impeller,
prevents water from following the engine drive shaft and
seals the rear of the pump housing to prevent leakage.
An oil cavity in the pump case holds the seal lubricant,
reducing wear to seal surfaces.
9
5
1
3
7
6
2
8
4
1033SD43
3-2
PT / PG / PD REPAIR
3.2
PT SERIES PUMPS 3
Periodic Maintenance Schedule
The chart below lists basic pump and engine maintenance. Refer to engine manufacturer’s Operation Manual for
additional information on engine maintenance. A copy of the engine Operator’s Manual was supplied with the machine
when it was shipped.
PT2
PT3
PT4
PT
2A
PT
2B
PT
2R
PT
2Y
PT
3A
PT
3V
PT
3Y
PTS
4V
Check fluid level.
•
•
•
•
•
•
•
•
Check engine oil level.
•
•
•
•
•
•
•
•
Inspect for leaks between pump and engine.
•
•
•
•
•
•
•
•
Inspect air cleaner. Clean as needed.
•
•
•
•
•
•
•
•
Check and tighten external hardware.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
DAILY (Before Starting)
NEW ENGINE BREAK-IN (First 20 hrs.)
Change engine oil and replace filter.
•
Check and adjust valve clearances.
•
EVERY 2 WEEKS (50 hrs.)
Inspect shockmounts for damage.
•
•
•
•
•
•
•
•
Change oil in pump housing.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Check and clean spark plug.
•
•
•
•
•
Replace air cleaner.
•
Change engine oil and replace filter.
•
Change engine oil and replace filter.
Clean air cleaner.
•
•
EVERY MONTH (100 hrs.)
•
•
•
Clean cooling system.
•
Clean combustion chamber.
•
•
•
Clean fuel filter.
•
•
EVERY 3 MONTHS (300 hrs.)
Check and adjust valve clearances.
•
•
EVERY 6 MONTHS (500 hrs.)
•
•
•
Replace air cleaner.
•
•
Replace in-line fuel filter.
•
•
Check and adjust valve clearances.
•
•
Clean cylinder head.
•
EVERY YEAR
Check and adjust valve clearances.
•
•
•
3-3
3 PT SERIES PUMPS
3.3
PT / PG / PD REPAIR
Engine Oil
PT2A / PT2R / PT3A / PT3V
Drain oil while engine is still warm.
a
1. Remove oil fill plug (a) and drain plug (b) to drain oil.
2. Install drain plug.
3. Fill engine crankcase with recommended oil up to level
of plug opening (c).
PT2A / PT2R Oil capacity: 21 oz. (0.6 liters)
PT3A Oil capacity: 37 oz. (1.1 liters)
PT3V Oil capacity: 41 oz. (1.2 liters)
c
4. Install oil filler plug.
b
1005SD53
PT2B
Drain oil while engine is still warm.
e
1. Remove oil drain plug (d) and drain oil.
2. Re-install drain plug.
3. To add oil do one of the following:
Remove dipstick (e) and add oil through filler tube. Fill
to full mark on dipstick.
or
Remove filler plug (f) and fill engine crankcase through
oil filler opening with recommended oil, up to level of
plug opening (g).
Oil capacity: 20 oz. (0.6 liters).
4. When full, re-install filler plug and dipstick.
f
g
1013SD74
3-4
d
PT / PG / PD REPAIR
3.3
PT SERIES PUMPS 3
Engine Oil (cont.)
PT2Y / PT3Y
Always check oil level before starting engine, and add oil
if level is low (L). To check oil, remove dipstick (j) and
insert it into oil pan. Do not screw in the dipstick . Fill
engine with oil up to the mouth of the filler port (H).
(H)
CAUTION: When checking oil level, make sure engine
(L)
j
is level. If it is tilted, you may add too much or too little oil.
If you overfill, the engine temperature will get too hot. If
you do not add enough oil, the engine could seize up.
1003SD42
PTS4V
Check engine oil level daily before starting engine. Add
oil as required.
To check oil level, place pump on a level surface. Clean
area around oil fill and remove dipstick. Pour oil (m)
slowly, checking oil level occasionally with dipstick. Fill to
full mark on dipstick (n). DO NOT overfill.
m
When measuring oil level, screw dipstick (o) firmly in
place until cap bottoms on tube.
1016SD32
o
FULL
n
ADD
1016SD33
3-5
3 PT SERIES PUMPS
3.4
PT / PG / PD REPAIR
Air Cleaner
PT2A / PT3A / PT2B / PT2R
Service air cleaner frequently to prevent carburetor malfunction.
PT2A / PT3A
NEVER run engine without air cleaner. Severe engine
damage will occur.
a
WARNING
NEVER use gasoline or other types of low flash
point solvents for cleaning the air cleaner. A fire or
explosion could result.
c
The engine is equipped with a dual element air cleaner.
1. Remove air cleaner cover (a). Remove both elements
and inspect them for holes or tears. Replace elements if damaged. Undamaged elements may be
cleaned and reused.
b
2. To clean foam element (b):
Wash in solution of mild detergent and warm water.
Rinse thoroughly in clean water. Allow element to dry
thoroughly. Once dry, soak element in clean engine
oil and squeeze out excess.
1001SD12
3. Paper element (c)
Tap element lightly to remove excess dirt or blow
compressed air through filter from the inside out.
Replace paper element if it appears heavily soiled.
PT2B
PT2R
c
a
b
b
c
a
1013SD75
3-6
1006SD80
PT / PG / PD REPAIR
3.4
PT SERIES PUMPS 3
Air Cleaner (cont.)
PT2Y / PT3Y
Replace air cleaner element (d) when engine power
decreases or engine exhaust color becomes dark.
To check or replace element: loosen wing nut (e) and
remove cover and element.
e
DO NOT wash the air cleaner element with detergent.
NEVER run engine without the air cleaner element.
Rapid engine wear will result.
d
1003SD42
PT3V
Service air cleaner frequently to prevent carburetor malfunction.
f
h
g
j
NEVER run engine without air cleaner. Severe engine
damage will occur.
WARNING
NEVER use gasoline or other types of low flash
point solvents for cleaning the air cleaner. A fire or
explosion could result.
The engine is equipped with a dual element air cleaner.
1. Loosen cover knobs and remove air cleaner cover (f).
Remove both elements and retainer (g). Inspect
them for holes or tears. Replace elements if damaged. Undamaged elements may be cleaned and
reused.
1007SD60
2. Foam element (h)
Wash in solution of mild detergent and warm water.
Rinse thoroughly in clean water. Allow element to dry
thoroughly. Once dry, soak element in clean engine
oil and squeeze out excess.
3. Paper element (j)
Tap element lightly to remove excess dirt or blow
compressed air through filter from the inside out.
Replace paper element if it appears heavily soiled.
3-7
3 PT SERIES PUMPS
3.4
PT / PG / PD REPAIR
Air Cleaner (cont.)
PTS4V
Service air cleaner frequently to prevent carburetor malfunction.
NEVER run engine without air cleaner. Severe engine
damage will occur.
a
NEVER use gasoline or other types of low flash point
solvents for cleaning the air cleaner. A fire or explosion
could result.
b
The engine is equipped with a dual element air cleaner.
To service air cleaner:
c
1. Remove cover (a), knob (b), and retaining plate (c).
d
2. Remove foam precleaner (e) from filter cartridge (d).
e
3. Wash precleaner in liquid detergent and water.
Squeeze dry in a clean cloth. Saturate precleaner in
engine oil, squeeze out excess oil. Replace precleaner
if it is damaged or heavily soiled.
4. To clean cartridge, remove and tap lightly on a flat
surface. Replace cartridge if it is damaged or heavily
soiled.
Note: Do not use petroleum solvents to clean precleaner
or cartridge. Petroleum type solvents will damage them.
Do not use pressurized air to clean cartridge. Pressurized air can also damage the cartridge.
3-8
1016SD34
PT / PG / PD REPAIR
3.5
PT SERIES PUMPS 3
Spark Plug
Clean or replace spark plug as needed to ensure proper
operation. Refer to the engine Owner’s Manual.
See chart below
WARNING
The muffler becomes very hot during operation and
remains hot for a while after stopping the engine. Do
not touch the muffler while it is hot.
1. Remove spark plug and inspect it.
2. Replace plug if the insulator is cracked or chipped.
Clean spark plug electrodes with a wire brush.
3. Set gap to meet specifications (see chart).
4. Tighten spark plug securely.
CAUTION: A loose spark plug can become very hot
and may cause engine damage.
1006SD37
Spark Plug
Electrode Gap
PT2A / PT3A
PT2B
PT2R
PT3V / PTS4V
type
(NGK) BPR 6ES
BOSCH WR 7DC
Champion
RCJ8
(NGK) B6HS
Champion
L86C
Champion
RC12YC
in.
(mm)
0.028–0.031
(0.7–0.8)
0.030
(0.76)
0.024–0.028
(0.6–0.7)
0.030
(0.76)
3-9
3 PT SERIES PUMPS
3.6
PT / PG / PD REPAIR
Carburetor Adjustment
PT2A / PT3A
1. Start engine and allow it to warm up to operating
temperature.
2. Set pilot screw (a) 2 turns out. See Note.
3. With the engine idling, turn pilot screw (a) in or out to
the setting that produces the highest RPM.
4. After pilot screw is adjusted, turn throttle stop screw
(b) to obtain the standard idle speed, 1400 ±150 rpm.
b
c
a
Note: On some engines the pilot screw is fitted with a
limiter cap (c) to prevent excessive enrichment of the airfuel mixture in order to comply with emission regulations.
The mixture is set at the factory and no adjustment should
be necessary. Do not attempt to remove the limiter cap.
The limiter cap cannot be removed without breaking the
pilot screw.
1015SD05
PT2B
Note: All carburetor adjustments must be made with air
cleaner attached to engine.
Initial Adjustment:
1. Turn needle valve (d) clockwise (in) until it just closes.
Do not over-tighten or damage may occur.
2. Open needle valve by turning counterclockwise
(out) 1-1/2 turns.
This initial adjustment will allow the engine to start and
be warmed up before making final adjustment.
Final Adjustment:
1. Start the engine and allow it to warm up at least two
minutes.
2. Turn needle valve (d) clockwise (in) until engine
misses. This is the LEAN setting.
3. Turn the needle valve counterclockwise (out), past
the point where the engine runs smoothly, until the
engine starts missing again. This is the RICH setting.
4. Turn the needle valve clockwise (in) to the mid-point
between the RICH and LEAN settings.
3-10
d
1013SD76
PT / PG / PD REPAIR
3.6
PT SERIES PUMPS 3
Carburetor Adjustment (cont.)
PT3V
1. Start engine and allow it to warm up to operating
temperature.
j
i
2. Place throttle control in idle position. Hold carburetor
throttle lever (f) against idle speed screw. Turn idle
speed screw (g) to obtain 1300 RPM.
f
3. While still holding carburetor throttle lever against idle
speed screw, turn idle mixture screw (h) clockwise
(lean) or counterclockwise (rich) until engine runs
smoothly. Release carburetor throttle lever.
h
4. Adjust governed idle screw (i) to 1400 RPM. Move
throttle control to the fast position. Engine should
accelerate smoothly. If it does not, readjust carburetor, usually to a slighly richer mixture, by turning idle
mixture screw (h) 1/8 turn counterclockwise.
g
5. Adjust top speed screw (j) to 3500 RPM.
PTS4V
Note: Air cleaner must be in place and engine warm
when making adjustments to carburetor.
1. With engine running, place throttle in SLOW position
and rotate carburetor throttle lever against the idle
speed screw (k) and hold it there.
2. Turn the idle speed screw to obtain 1300 to 1500
RPM.
k
l
3. While still holding the throttle lever against the idle
speed screw, turn the idle mixture valve (l) midway
between limits.
1016SD35
4. Readjust the idle speed to 1200 RPM and release
carburetor throttle lever. Engine should accelerate
smoothly when throttle is opened. If it does not,
readjust idle mixture valve slightly counterclockwise.
1020SD72
3-11
3 PT SERIES PUMPS
3.7
PT / PG / PD REPAIR
Adjusting Valve Clearance
PT2Y / PT3Y
Adjust valve clearance after first 20 hours of operation,
and every 6 months or 500 hours thereafter.
Set valve clearance with engine cold and piston at the top
of its compression stroke.
Valve Clearance
0.006 in.
(0.15 mm)
Intake: 0.006" (0.15 mm)
Exhaust: 0.006" (0.15 mm)
1003SD47
3.8
Adjusting Engine Speed
PT2Y / PT3Y
Before making any engine adjustments, remove pump
cover and check that impeller and pump housing are
clean, and that impeller clearance is correct. Adjust
engine to a no-load speed of:
3400 ± 100 RPM. PT2Y
3800 ± 100 RPM. PT3Y
To adjust engine speed:
1. Fill pump housing with water. This will keep pump
seals cool while running engine.
a
b
c
2. Start engine and allow it to warm up for a minute.
3. Loosen locknut (b) on throttle stop screw (c). Turn
screw in to decrease speed, out to increase speed.
Make sure throttle lever (a) is touching stop screw
before measuring RPM. Tighten locknut after correct
engine speed is set.
CAUTION: Running pump at a speed higher than that
listed in “Technical Data” can damage pump and engine.
DO NOT adjust governor setting.
3-12
1003SD48
PT / PG / PD REPAIR
3.9
PT SERIES PUMPS 3
Cleaning Sediment Cup
1. Turn fuel valve off.
PT2A / PT3A
2. Remove sediment cup (d) seal (e) and screen (f).
3. Wash them thoroughly in a nonflammable solvent.
Dry them and reinstall.
4. Turn fuel valve on and check for leaks.
e
d
1001SD13
PT2R
f
e
d
1006SD76
PT3V / PTS4V
f
e
d
1007SD58
3-13
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.10 Mechanical Seal Lubrication
Change seal lubricant every 50 hours using SAE 30W oil.
1. Remove plugs (a) from both sides of pump housing
for venting.
2. Remove bottom plug (b) and allow oil to drain from oil
cavity.
a
3. Install bottom drain plug. Fill oil cavity through one of
the side plug (a) holes until oil is level with top of hole
or flows out hole on opposite side. Oil quantity:
approximately 4 ounces (120 ml).
4. Install all plugs before operating pump.
b
1003SD45
3.11 Adjusting Impeller Clearance
If it is necessary to replace impeller or volute insert, be
sure clearance between impeller and insert is adjusted
correctly. The impeller (c) should be as close to the insert
(d) as possible without rubbing against it. Clearance is
adjusted by adding or removing shims (e) from behind
insert. Inserts can be either plastic or steel. Plastic
inserts float freely between the impeller and the volute.
Steel inserts are attached to the pump cover and must be
unbolted (f) before they can be removed.
Check clearance (g) between impeller and insert by
slowly pulling starter rope to turn impeller. On diesel
engines without starter ropes, use hand crank.
e
d
Note: Remove spark plug to make it easier to turn
impeller. On diesel engines open decompression device
before cranking engine.
If starter or crank is difficult to turn, or rubbing is heard
from inside pump, the impeller and insert are too close to
each other. Remove a shim from behind insert and check
again for rubbing. Continue removing shims until impeller
turns easily.
g
c
e
Note: It is important not to remove too many shims or the
clearance between the impeller and insert will become
too wide and pump performance will be reduced.
As the impeller wears down, additional shims may be
required to maintain the clearance between the impeller
and insert.
3-14
f
1003SD46
PT / PG / PD REPAIR
PT SERIES PUMPS 3
3.12 Cleaning Pump
After pumping water containing a large amount of dirt or
debris, clean out inside of pump housing.
1. Remove drain plug (h) from pump housing and drain
any water left in pump.
j
2. Loosen the four knobs holding the pump cover (j) and
remove cover.
3. Clean out dirt and debris. Inspect impeller and volute
insert for wear.
h
WARNING
The impeller may develop sharp edges. Use care
when cleaning around impeller to prevent getting cut.
1003SD44
3.13 Storage
If pump is being stored for more than 30 days:
1. Remove drain plug from pump cover and drain out any
water left in the housing.
2. Remove pump cover and clean inside of pump housing. Coat inside of pump with a light film of oil to reduce
corrosion. A spray can of oil works well for this.
3. Tape up suction and discharge ports to prevent anything from falling into pump.
4. Change engine oil and follow procedures described in
engine manual for engine storage.
5. Cover pump and engine and store in a clean, dry area.
3-15
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.14 PT2 Pump Assembly
1 [L3]
2
3
7
5 [L2]
4
23 [T3]
22
ENGINE
CRANKCASE
8
24 [L4]
[L4]
37 [L1, T1]
21
6
38
[L2, T2] 39
[T4] 20
11
[L2] 25
10
9
26
19
12
13
16
14 [L1, T1]
17
15
18
27
32
5 [L2]
35
34
2
28 [L2, T3]
29
[L3] 1
8
30
7
31
40
33
3-16
36
1003SD67
1003SD66
PT / PG / PD REPAIR
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
DESCRIPTION
PT SERIES PUMPS 3
QTY.
Fitting - nipple .............................................................................................. 2
Locknut M8 ................................................................................................. 8
Flange - port ................................................................................................ 1
Gasket - priming plug .................................................................................. 1
Stud M8x30 ................................................................................................. 8
Kit - pump housing (incl. 7 & 8) ................................................................... 1
Plug - priming .............................................................................................. 2
Gasket - priming plug .................................................................................. 2
Sleeve - engine shaft .................................................................................. 1
Washer - flat ................................................................................................ 1
Seal-shaft .................................................................................................... 1
Plug M10 hex .............................................................................................. 3
Ring - sealing .............................................................................................. 3
Washer 13 ................................................................................................... 3
Screw M12x50 ............................................................................................ 2
Bolt - eye ..................................................................................................... 4
O-Ring ........................................................................................................ 1
Seal - mechanical (std.) .............................................................................. 1
Kit - impeller ................................................................................................ 1
Kit - mounting .............................................................................................. 1
Nut M8 hex. ................................................................................................. 1
Ring - sealing .............................................................................................. 1
Hub - impeller mount ................................................................................... 1
Nut 5/16-24 hex jam .................................................................................... 1
Key - square ................................................................................................ 1
Stud - impeller mount .................................................................................. 1
Gasket - impeller mounting ......................................................................... 1
Kit - seal insert (incl. 28) .............................................................................. 1
Screw M8x25 .............................................................................................. 2
Shim .005"" ............................................................................................. A/R
Shim .010"" ............................................................................................. A/R
Shim .020"" ............................................................................................. A/R
Shim .040"" ............................................................................................. A/R
Volute .......................................................................................................... 1
O-Ring ........................................................................................................ 1
Kit - pump cover (incl. 7 & 8) ...................................................................... 1
Plug M20, hex. ............................................................................................ 1
Ring - sealing .............................................................................................. 1
Flange - port ................................................................................................ 1
Gasket - flapper .......................................................................................... 1
Knob ........................................................................................................... 4
Screw M12x40 ............................................................................................ 2
Ring - sealing .............................................................................................. 4
Screw M8x45 .............................................................................................. 2
O-Ring ........................................................................................................ 1
[L1] - 0029311
[T1] - 28 ft.lbs. (38 Nm)
[L2] - 0029312
[T2] - 16 ft.lbs. (22 Nm)
[L3] - 0079356
[T3] - 11 ft.lbs. (15 Nm)
[L4] - 0073287
[T4] - 25 ft.lbs. (34 Nm)
3-17
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.15 PT3 Pump Assembly
2 [L3]
19
18
ENGINE
CRANKCASE
3
20 [T3]
21 [L4]
[L4]
4
36 [L1, T5]
1
[T4] 17
37
[L2, T1] 38
23
[L2, T1] 22
7
5
6
5
8
16
13
9
14
10
12
11 [L1, T5]
15
24
30
26
34
33
32
31
25 [L2, T2]
[L3] 2
27
4
28
3
29
35
3-18
1003SD67
1004SD13
PT / PG / PD REPAIR
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
DESCRIPTION
PT SERIES PUMPS 3
QTY.
Kit - pump housing (incl. 1–4) ..................................................................... 1
Fitting - nipple .............................................................................................. 2
Plug - priming .............................................................................................. 2
Gasket - priming plug .................................................................................. 2
Seal - ring .................................................................................................... 2
Sleeve - engine ........................................................................................... 1
Seal - shaft .................................................................................................. 1
Plug M10, hex ............................................................................................. 3
Seal - ring .................................................................................................... 3
Spacer - pump ............................................................................................ 2
Washer B13 flat ........................................................................................... 2
Screw M12x55 ............................................................................................ 2
Bolt - eye ..................................................................................................... 4
O-Ring ........................................................................................................ 1
Seal - mechanical (std.) .............................................................................. 1
Impeller ....................................................................................................... 1
Kit - mounting (incl. 17–23) ........................................................................ 1
Nut M10 ...................................................................................................... 1
Ring - sealing .............................................................................................. 1
Hub - impeller mount ................................................................................... 1
Nut .............................................................................................................. 1
Key - square ................................................................................................ 1
Stud - impeller mount .................................................................................. 1
Gasket - impeller mount .............................................................................. 1
Insert - steel (incl. 25) ................................................................................. 1
Screw M8x35 .............................................................................................. 2
Shim .005"" ............................................................................................. A/R
Shim .010"" ............................................................................................. A/R
Shim .020"" ............................................................................................. A/R
Shim .040"" ............................................................................................. A/R
Volute .......................................................................................................... 1
O-Ring ........................................................................................................ 1
O-Ring ........................................................................................................ 1
Kit - pump cover (incl. 3 & 4) ....................................................................... 1
Locknut M8 ................................................................................................. 4
Port (incl. 2) ................................................................................................ 1
Gasket - flapper .......................................................................................... 1
Stud M8x30 ................................................................................................. 4
Knob ........................................................................................................... 4
Screw M12x40 ............................................................................................ 2
Seal - ring .................................................................................................... 4
Screw 3/8-16 ............................................................................................... 4
[L1] - 0029311
[T1] - 15 ft.lbs. (21 Nm)
[L2] - 0029312
[T2] - 16 ft.lbs. (22 Nm)
[L3] - 0079356
[T3] - 11 ft.lbs. (15 Nm)
[L4] - 0073287
[T4] - 25 ft.lbs. (34 Nm)
3-19
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.16 PTS4V Pump Assembly
1
3
4
ENGINE
CRANKSHAFT
2 [L1]
[T3, L3] 13
[T2, L2] 16
14
15
32
[G1] 5
17
18
7
19
9
6
8 [T1, L2]
10 [L2]
12 [L2]
11 [T2, L2]
24
26
25
23 [L3]
28 [T2, L3]
22
20
21
27
2 [L1]
29
30
4
31
3
1020SD61
3-20
PT / PG / PD REPAIR
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
DESCRIPTION
PT SERIES PUMPS 3
QTY.
Kit - pump housing (incl. 2–4) ..................................................................... 1
Fitting - nipple .............................................................................................. 2
Plug - priming .............................................................................................. 2
Gasket - priming plug .................................................................................. 2
Seal - shaft .................................................................................................. 1
Plug M10, hex ............................................................................................. 3
Seal - ring .................................................................................................... 3
Screw M12x40 ............................................................................................ 4
Bolt - eye ..................................................................................................... 4
Stud M8x20 ................................................................................................. 2
Nut M8 ........................................................................................................ 2
Setscrew M8x10 ......................................................................................... 3
Screw 7/16-14x1-1/4 ................................................................................... 4
Gasket - pump oil cover .............................................................................. 1
Cover - oil chamber ..................................................................................... 1
Screw M8x20 .............................................................................................. 5
O-Ring ........................................................................................................ 1
Seal - mechanical (std.) .............................................................................. 1
Impeller ....................................................................................................... 1
Kit - suction port replacement (incl. 2) ........................................................ 1
Locknut M8 ................................................................................................. 4
Gasket - flapper .......................................................................................... 1
Stud M8x30 ................................................................................................. 4
Kit - pump cover (incl. 3 & 4) ....................................................................... 1
Volute .......................................................................................................... 1
Shim .005"" ............................................................................................. A/R
Shim .010"" ............................................................................................. A/R
Shim .020"" ............................................................................................. A/R
Shim .040"" ............................................................................................. A/R
Kit - volute insert (incl. 28) .......................................................................... 1
Screw M8x35 .............................................................................................. 3
O-ring .......................................................................................................... 1
O-ring .......................................................................................................... 1
Knob ........................................................................................................... 4
Sleeve - shaft .............................................................................................. 1
[G1] - Gease #2
[L1] - 0079356
[T1] - 28 ft.lbs. (38 Nm)
[L2] - 0029311
[T2] - 16 ft.lbs. (22 Nm)
[L3] - 0029312
[T3] - 40 ft.lbs. (54 Nm)
3-21
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.17 Inspecting Pump
Before disassembling pump, check for conditions both
outside and inside the pump which could affect performance.
Inspecting Outside Pump:
Inspecting Inside Pump:
•
CHECK THAT THE PUMP IS OPERATING WITHIN
SPECIFICATIONS.
Remember that as suction lift and discharge head
increases, pump output is reduced.
• CHECK FOR DEBRIS AND DIRT INSIDE PUMP
CASING.
If allowed to accumulate, it may restrict flow through
the pump or impede the movement of the impeller.
•
CHECK TYPE OF FLUID BEING PUMPED.
Pump will perform poorly if used to pump heavy
sludges or mud.
• CHECK ENGINE OPERATING SPEED.
Gasoline Engines: 3600 ±100 RPM
Diesel Engines: 3400 ±100 RPM
•
CHECK SUCTION HOSE FOR LEAKS OR DAMAGE.
A puncture or tear above the water line will make the
pump difficult or impossible to prime.
•
CHECK THAT SUCTION HOSE IS CORRECT TYPE.
Suction hose must have strong rigid walls. Thinwalled collapsible hoses like those used on the discharge side cannot be used.
•
CHECK THAT STRAINER HOSE LINES ARE NOT
BLOCKED OR RESTRICTED.
Remove any dirt, debris or vegetation which might
interfere with pump flow. If possible, flush hose lines
with clear water at the end of each operation and
suspend strainer in water, rather than rest on sandy or
muddy bottom. Check that discharge hose is not
kinked.
•
•
CHECK THAT ALL FITTINGS AND HOSE CLAMPS
ON SUCTION LINE ARE TIGHT AND SEALING
PROPERLY.
Fittings and clamps may loosen during operation.
Add additional clamps where necessary to ensure
good seal.
CHECK THAT PUMP CASE WAS FILLED WITH
WATER AND PRIME PLUG SEALED TIGHTLY,
BEFORE START-UP.
3-22
As engine operating RPM falls, pump capacity and
discharge head are reduced.
• CHECK FLAPPER VALVE AND INLET PORT FOR
LEAKS OR DAMAGE.
If flapper valve is worn or distorted it may not seal
tightly. Inspect threads on inlet port nipple for deep
scratches which could allow air leaks.
• CHECK CLEARANCE BETWEEN IMPELLER AND
VOLUTE INSERT.
Additional shims are required to maintain clearance
as impeller wears.
• CHECK COVER O-RING.
Replace O-Ring if torn or crushed. Make sure cover
is tightened evenly.
• CHECK FOR WATER LEAK BETWEEN PUMP
HOUSING AND ENGINE. INSPECT MECHANICAL
SEAL LUBRICANT AND ENGINE OIL.
The presence of water indicates a loose impeller bolt
or damage to mechanical seal.
• CHECK FOR OIL LEAK BETWEEN PUMP HOUSING AND ENGINE.
An oil leak indicates a failed shaft seal.
• CHECK PUMP SUCTION WITH VACUUM GAUGE.
If gauge reading is above 16 in. Hg (55 KPa), problem
is probably outside the pump, in hose line or fitting.
PT / PG / PD REPAIR
PT SERIES PUMPS 3
3.18 Flapper Valve
The flapper valve (1) is located at the pump inlet (2). During operation, this valve is open allowing a free path for water
to flow into the pump case. When the pump is stopped, it closes and prevents water in the suction line from being lost.
A leak around the flapper gasket will cause the suction line to lose its prime and make the pump difficult or impossible
to operate.
Recommended tools:
Socket wrench - 13mm
Removal:
Installation:
1. Remove four locknuts (3) mounting suction (inlet)
port (2) to pump.
3. Install new flapper valve assembly, with large washer
(4) facing inside of cover and flap opening facing
down. This washer acts as a counterweight and helps
seal the flapper gasket against the pump inlet when
pump stops.
2. Remove inlet port and flapper valve assembly (1).
4. Mount inlet port (2) to pump. Tighten locknuts (3)
evenly until flapper gasket begins to compress.
CAUTION: DO NOT overtighten. Overtightening may
distort flapper gasket causing an air leak at inlet port.
1
3
4
2
1033SD49
3-23
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.19 Frame Assembly
(PT2 Shown)
7
10
6
5
2
1
3
9
4
8
5
1004SD40
3-24
PT / PG / PD REPAIR
3.19
PT SERIES PUMPS 3
Frame Assembly (cont.)
Recommended tools:
Socket wrench - 1/2" (13mm), 11/16" (17mm), 3/4" (19mm)
Allen wrench - 6mm
Removal:
Installation:
1. Remove hardware (1) mounting console (2) to
shockmounts (3). Remove from frame.
1. Mount pump side (10) to console (2) using screws (8)
and washers (9). Apply Loctite 243 or an equivalent
medium strength threadlocker and torque to 28 ft.lbs
(38 Nm).
Note: Mounting hardware varies on all PT Series Pumps.
2. Remove four screws (4), washers (5), and four locknuts (6) mounting engine side (7) to console.
3. Remove two screws (8) and washers (9) mounting
pump side (10) to console.
2. Mount engine side (7) to console (2) using screws
(4), washers (5), and locknuts (6). Torque to 29 ft.lbs
(40 Nm).
3. Mount console (2) to shockmounts (3) using hardware (1).
Note: See sealant and torque reference charts in back
of book for appropriate threadlocking adhesives and
torque values.
WARNING
Before you start the machine, ensure that all tools
have been removed from the machine and that
replacement parts and adjusters are firmly tightened.
3-25
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.20 Impeller
The impeller (1) will wear gradually during normal pump operations. The amount of wear depends on the quantity and
composition of the solid particles being carried in the water.
The impeller should be replaced, if a new insert or additional shims are no longer sufficient to maintain clearance
between insert and impeller.
Note: Shim thickness should not exceed 0.125" (3mm).
10
12
14
7
4
6
13
11
8
1
3
11
10
6
9
5
7
2
1003SD67
1033SD50
3-26
PT / PG / PD REPAIR
3.20
PT SERIES PUMPS 3
Impeller (cont.)
Recommended tools:
Socket wrench - 1/2" (13mm), 9/16"
Pry bar
Removal:
Installation:
1. Remove pump / engine from frame. See Section 3.19
Frame Assembly.
1. Install mechanical seal (9) on impeller (1) if not
already done. See Section 3.21 Pump Seals.
2. Loosen four knobs (2) mounting front volute housing
(3) to rear impeller housing (4). Thoroughly wash out
and clean around impeller (1) and inside of housing.
2. Press hub (10), with gasket (11), into front end of
impeller.
3. Remove bottom plug (5) from pump housing and
drain oil from pump.
Note: In the interests of invironmental protection, place
plastic sheeting and a container under the pump to collect
the liquid which drains off. Dispose of this liquid properly.
4. Remove dome nut (6) and sealing ring (7). Using a
pry bar or 3-jaw puller, insert behind impeller and pull
impeller off of engine shaft being carefull not to damage O-ring (8) behind impeller.
3. Install long threaded end of stud (13) in engine shaft
making sure enough of the stud is exposed to mount
the impeller. Apply Loctite 271 or an equivalent high
strength threadlocker and secure with jam nut (12).
Note: See chart for stud locating dimensions and torque
values for jam nuts & dome nuts.
4. Place key (14) in slot on engine shaft.
5. Install impeller (1) on engine shaft. Place sealing ring
(7) over stud and secure with dome nut (6). Apply
Loctite 222 or an equivalent low strength threadlocker.
CAUTION: Use care when handling impeller to avoid
damage to seal surfaces.
WARNING
Note: The mechanical seal (9) will remain on the impeller
when it is removed.
Remove spark plug from engine before testing
impeller.
5. Push hub (10) out from impeller and remove gasket
(11).
6. Turn impeller by hand and check that it turns freely.
6. Loosen jam nut (12) securing stud (13) in engine
shaft.
Note: If back of impeller rubs on pump housing, remove
impeller and install one additional copper washer between impeller and shaft sleeve.
7. Remove stud and key (14).
7. Install drain plug (5). Fill pump oil cavity to specified
level and check for leaks between pump housing and
engine.
LOCATING DIM.
Stud (13)
in. (mm)
TORQUE VALUE
Jam Nut (12)
ft.lbs. (Nm)
TORQUE VALUE
Dome Nut (6)
ft.lbs. (Nm)
PT2A
PT2B
PT2R
PT2Y
1.00 (25)
11 (15)
25 (34)
PT3A
PT3V
PT3Y
1-3/16 (30)
31 (42)
27 (37)
PTS4V
1-1/8 (28)
20 (27)
27 (37)
Note: See Sections 1.10, 1.11, & 1.12 Technical Data for
oil level specifications.
8. Mount front volute housing (3) to rear impeller housing (4) using four knobs (2).
9. Install spark plug and pull starter rope. If impeller is
binding, remove shims from behind volute insert. See
Section 3.11 Adjusting Impeller Clearance.
3-27
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.21 Pump Seals
3
10
4
8
9
2
1
7
5
6
1033SD55
3-28
PT / PG / PD REPAIR
3.21
PT SERIES PUMPS 3
Pump Seals (cont.)
Recommended tools:
Socket wrench - 1/2" (13mm)
Allen wrench - 1/4", 5/16", 3/8"
Removal:
Installation:
1. Remove impeller (1). See Section 3.20 Impeller.
CAUTION: When handling and installing the mechani-
2. Pull mechanical seal (2) off impeller.
cal seal, it is important to keep hands and tools clean and
to avoid touching or pressing on seal faces.
3. Remove key (3) and washer(s) (4) from engine shaft.
Note: The quantity of washers may vary between pumps.
When removing washers, note their position and quantity
on engine shaft to ensure that they will be reinstalled
correctly.
4. Remove four screws (5) and washers (6) mounting
the pump housing (7) to the engine. Remove pump
housing.
1. Grease shaft seal (8) using Shell Alvania #2 or
equivalent. Press seal with open end facing into pump
housing (7).
2. Slide sleeve (10) over engine shaft. Be sure to
replace any washers that were removed.
Note: If the quantity or position of the washers are in
doubt, install sleeve with one washer on either side.
5. Remove shaft seal (8) from rear of pump housing.
3. Press stationary half of mechanical seal (9) into pump
housing.
6. Press stationary half of mechanical seal (9) out from
pump housing.
4. Slide pump housing over engine shaft being careful
not to cut lip of shaft seal (8) on keyway in shaft.
7. Remove sleeve (10) and any remaining washers
from engine shaft for inspection or replacement.
5. Mount pump housing (7) to engine using four screws
(5) and washers (6). Apply Loctite 271 or an equivalent high strength threadlocker and torque to 16 ft.lbs
(22 Nm).
6. Push mechanical seal (2) completely on impeller (1).
7. Install impeller (1). See Section 3.20 Impeller.
3-29
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.22 Inspecting Pump Components
Oil Cavity
5
7
6
4
1033SD55
Contact Surface
4
2
3
1
1033SD55
3-30
PT / PG / PD REPAIR
3.22
PT SERIES PUMPS 3
Inspecting Pump Components (cont.)
Mechanical Seal
Sleeve Washers
The PT Series Pumps use a carbon-ceramic mechanical
seal (1). Its design provides excellent wear and sealing
characteristics. Inspect the seal for damage and wear as
described below.
Inspect the condition of the copper sleeve washers (7).
These washers vary between pumps and in some cases
are used to shim the impeller (3) to prevent it from
rubbing against the oil cover or pump housing.
1. The two contact surfaces between seal halves should
have flat, smooth surface and be absolutely free of
any scratches, cracks, nicks, or pitting.
CAUTION: Replace washers if they are badly crushed
CAUTION: Replace seal if surfaces appear damaged
or distorted.
Washers may be located both in front of and behind the
shaft seal (5).
in any way.
2. Inspect the rubber ring, inside the rotating seal half
(2), for damage.
Note: The rotating seal half must seal tightly around the
impeller (3). For this reason it is important to examine the
impeller surface, in the area where the seal mounts, for
pitting, rust or other damage which could prevent a good
fit.
Note: Install washers in the same position and quantities
as they were removed.
If impeller (3) rubs against housing after it has been
installed, insert one additional copper washer between
impeller and sleeve (6).
Note: On PT2 Series Pumps an aluminum sleeve
washer is used. Install this washer directly behind
impeller.
3. Inspect the O-ring on the stationary half (4). Make
sure it seals tight enough to prevent water from
leaking past it and the seal from spinning in housing.
Shaft Seal and Sleeve
The shaft seal (5) is used to prevent the seal lubricant
from leaking out of the oil cavity in the pump housing. It
is located at the back of the pump housing and rides on
a metal sleeve (6) which is placed over the engine shaft.
If oil is observed leaking from the rear of the pump
housing, both the seal and sleeve must be inspected.
The surface of the sleeve, where the seal rides, should be
smooth.
CAUTION: Replace sleeve if rusted, pitted or looks
worn. Always replace it along with the shaft seal.
3-31
3 PT SERIES PUMPS
PT / PG / PD REPAIR
3.23 Testing
Suction Test
Required Tools:
Vacuum Gauge - P/N 28755
Tachometer
1. Fill pump housing with cold water until it flows out from
discharge port.
2. Tighten pump cover and prime plug .
3. Bring engine up to operating speed. Check engine
RPM. See Section 1.10, 1.11, & 1.12 Technical Data
for different PT engine speeds.
Note: Keep pump housing filled with water at all times
while pump is running. If too much water is lost during test
procedure, stop engine and reprime pump. It may be
necessary to tilt pump or partially cover discharge port, to
prevent water in the pump housing from being lost while
still allowing air to be vented.
4. Grease mounting face of vacuum gauge (1), to ensure a good seal. Press gauge over inlet port.
5. Gauge reading should slowly climb and then hold
steady.
6. With gauge still against inlet port, turn off engine.
Gauge reading should not change.
1
Note: See vacuum chart for appropriate gauge readings.
1033SD63
1033SD65
This test MUST be completed within a few minutes to
prevent the water in the pump housing from getting hot,
which will result in lower readings. If possible, allow cold
water to run into discharge port while testing pump.
in.Hg
(KPa)
3-32
Excellent
Satisfactory
20–24
(68–82)
16–20
(55–68)
PT / PG / PD REPAIR
PT SERIES PUMPS 3
3.24 Troubleshooting
Problem / Symptom
Reason / Remedy
Pump does not take in water.
1.
2.
3.
4.
5.
Pump takes in water; little or no discharge.
1. Engine speed too low. Adjust speed.
2. Suction strainer partially plugged. Clean strainer.
3. Impeller worn. Adjust clearance by adding shims or
replace impeller.
4. Volute insert worn or damaged. Adjust clearance or
replace insert.
Suction hose leaks at inlet.
1. Clamps are not sealing properly. Tighten, replace, or
add clamp.
2. Hose diameter is too large.
3. Hose is damaged.
Discharge hose does not stay on coupling.
1. Pressure may be too high for clamps being used. Add
another clamp.
2. Hose kinked or end blocked. Check hose.
Impeller does not turn; pump is hard to start.
1. Impeller jammed or blocked.Open pump cover and
clean dirt and debris from inside of pump housing.
2. Impeller and insert binding. Adjust clearance by removing shim from behind insert.
Engine does not start or
stops during operation.
1. Debris in pump housing, blocking impeller.
2. Low oil level in engine.
Not enough priming water in housing.
Engine speed too low. Adjust speed.
Strainer plugged. Clean strainer.
Suction hose damaged. Replace or repair hose.
Air leak at suction port. Check that fittings are tight and
sealing properly.
6. Pump too high above water.
7. Debris collecting in pump housing. Clean pump housing.
8. Too much clearance between impeller and insert.
3-33
3 PT SERIES PUMPS
Notes:
3-34
PT / PG / PD REPAIR
PT / PG / PD REPAIR
PG SERIES PUMPS 4
Table of Contents
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
Description and Operation ....................................................................... 4-2
Periodic Maintenance Schedule .............................................................. 4-3
Air Cleaner .............................................................................................. 4-4
Engine Oil ............................................................................................... 4-4
Spark Plug .............................................................................................. 4-5
Carburetor Adjustment ............................................................................ 4-5
Cleaning Sediment Cup .......................................................................... 4-6
Adjusting Idle Speed ............................................................................... 4-6
Cleaning Pump ........................................................................................ 4-6
Adjusting Impeller Clearance .................................................................. 4-7
Storage ................................................................................................... 4-7
PG Pump Assembly ................................................................................ 4-8
Inspecting Pump ................................................................................... 4-10
Flapper Valve ........................................................................................ 4-11
Frame Assembly ................................................................................... 4-12
Pump Housing ...................................................................................... 4-13
Impeller ................................................................................................. 4-15
Mechanical Seal Replacement .............................................................. 4-15
Testing .................................................................................................. 4-16
Troubleshooting .................................................................................... 4-17
4-1
4 PG SERIES PUMPS
4.1
PT / PG / PD REPAIR
Description and Operation
PG Series Pumps use an impeller (1) and volute (2) to
create the suction and discharge pressures required for
pump operation.
A mechanical seal (8) mounted behind the impeller,
prevents water from following the engine drive shaft and
seals the rear of the pump housing to prevent leakage.
The impeller is threaded directly to the engine drive shaft
(3) and rotates inside the volute casing. Water is drawn
into the pump inlet (4) by the low pressure area created
The flapper valve (9) at the pump inlet closes when the
pump stops. This valve seals the inlet port and prevents
the prime water in the suction hose from being lost.
at the eye of the impeller. Vanes on the impeller move the
liquid into the volute where it is gathered and directed to
the discharge port (5).
Pump case is easily filled with water by removing the
priming plug (10).
Clearance between the impeller and volute is maintained
by the addition of shim washers (6) behind the impeller.
A movable tapered ring (7) set inside the volute, can be
shimmed to maintain close tolerances between the volute and impeller to maintain pump efficiency.
3
10
5
6
1
2
9
8
4
7
1033SD43
4-2
PT / PG / PD REPAIR
4.2
PG SERIES PUMPS 4
Periodic Maintenance Schedule
The chart below lists basic pump and engine maintenance. Refer to engine manufacturer’s Operation Manual for
additional information on engine maintenance. A copy of the engine Operation Manual was supplied with the machine
when it was shipped.
PG2A
PG3A
Check fluid level.
•
•
Check engine oil level.
•
•
Inspect for leaks between pump and engine.
•
•
Inspect air cleaner. Clean as needed.
•
•
Check and tighten external hardware.
•
•
•
•
•
•
Check and clean spark plug.
•
•
Clean sediment cup.
•
•
Change engine oil and replace filter.
•
•
Clean cooling system.
•
•
Check and adjust valve clearances.
•
•
Check and adjust impeller clearance.
•
•
DAILY (Before Starting)
NEW ENGINE BREAK-IN (First 20 hrs.)
Change engine oil and replace filter.
EVERY 2 WEEKS (50 hrs.)
Clean air cleaner.
EVERY MONTH (100 hrs.)
EVERY 3 MONTHS (300 hrs.)
4-3
4 PG SERIES PUMPS
4.3
PT / PG / PD REPAIR
Air Cleaner
Service air cleaner frequently to prevent carburetor malfunction.
CAUTION: NEVER run engine without air cleaner.
Severe engine damage will occur.
WARNING
a
NEVER use gasoline or other types of low flash
point solvents for cleaning the air cleaner. A fire or
explosion could result.
b
To service:
1. Remove air cleaner cover (a). Inspect element (b) for
holes or tears. Replace element if damaged.
c
2. Wash element in solution of mild detergent and warm
water. Rinse thoroughly in clean water. Allow element
to dry thoroughly.
Soak element in clean engine oil and squeeze out
excess oil.
3. Install element, grid plate (c), and air cleaner cover.
1020SD13
4.4
Engine Oil
Drain oil while engine is still warm.
d
1. Remove oil fill plug (d) and drain plug (e) to drain oil.
2. Install drain plug.
3. Fill engine crankcase with recommended oil up to
level of plug opening (f).
f
Oil capacity: 20 oz. (0.6 liters)
4. Install oil filler plug.
e
1005SD53
4-4
PT / PG / PD REPAIR
4.5
PG SERIES PUMPS 4
Spark Plug
Clean or replace spark plug as needed to ensure proper
operation. Refer to the engine Operation Manual.
0.028–0.031 in.
(0.7–0.8 mm)
Recommended Plug: (NGK) BPR 6ES
WARNING
The muffler becomes very hot during operation and
remains hot for a while after stopping the engine. Do
not touch the muffler while it is hot.
1. Remove spark plug and inspect it.
2. Replace plug if the insulator is cracked or chipped.
Clean spark plug electrodes with a wire brush.
3. Set gap to 0.028–0.031" (0.7–0.8 mm).
1006SD37
4. Tighten spark plug securely.
CAUTION: A loose spark plug can become very hot
and may cause engine damage.
4.6
Carburetor Adjustment
1. Start engine and allow it to warm up to operating
temperature.
2. Set pilot screw (g) 2 turns out. See Note.
3. With the engine idling, turn pilot screw (g) in or out to
the setting that produces the highest rpm.
4. After pilot screw is adjusted, turn throttle stop screw
(h) to obtain the standard idle speed, 1400 ±150 rpm.
Note: On some engines the pilot screw is fitted with a
limiter cap (j) to prevent excessive enrichment of the airfuel mixture in order to comply with emission regulations.
The mixture is set at the factory and no adjustment should
be necessary. Do not attempt to remove the limiter cap.
The limiter cap cannot be removed without breaking the
pilot screw.
h
j
g
1015SD05
4-5
4 PG SERIES PUMPS
4.7
PT / PG / PD REPAIR
Cleaning Sediment Cup
Turn fuel valve off. Remove sediment cup (a) and O-ring
(b). Wash them thoroughly in a nonflammable solvent.
Dry them and re-install. Turn fuel valve on and check for
leaks.
b
a
1001SD13
4.8
Adjusting Idle Speed
To adjust idle speed:
1. Start engine and allow it to warm up to normal operating temperature.
2. Turn throttle stop screw (c) in to decrease speed, out
to increase speed.
c
1017SD58
4.9
Cleaning Pump
After pumping water containing a large amount of dirt or
debris, clean out inside of pump housing.
1. Remove drain plug (d) from pump housing and drain
any water left in pump.
2. Remove the four screws (e) holding the pump cover
and remove cover.
e
3. Clean out dirt and debris. Inspect impeller and volute
for wear.
WARNING
d
The impeller may develop sharp edges. Use care
when cleaning around impeller to prevent getting
cut.
1019SD90
4-6
PT / PG / PD REPAIR
PG SERIES PUMPS 4
4.10 Adjusting Impeller Clearance
If it is necessary to replace impeller or volute, be sure
clearance between impeller and volute is adjusted correctly. The impeller (f) should be as close to the volute
(g) as possible without rubbing against it. Clearance is
adjusted by adding or removing shims (h) from behind
impeller. To adjust the clearance do the following:
k
j
g
n
1. Remove pump housing but do not remove impeller.
2. Measure the distance (j) of volute.
3. Measure the distance (k) of impeller.
4. Subtract the distance (k) from (j).
(j) - (k) = (m) clearance.
5. The clearance between the volute and the impeller
should be 0.012" (0.3 mm) to 0.028" (0.7 mm). Adjust
the distance by removing the impeller and adding
shims as needed.
Each shim measures 0.012" (0.3 mm).
As the impeller wears down, additional shims may be
required to maintain the clearance between the impeller
and the volute. Check the clearance whenever the mechanical seal (n), impeller, volute, or rear flange plate are
replaced.
h
m
f
1019SD91
4.11 Storage
If pump is being stored for more than 30 days:
1. Remove drain plug from pump cover and drain out any
water left in the housing.
2. Remove pump cover and clean inside of pump housing. Coat inside of pump with a light film of oil to reduce
corrosion. A spray can of oil works well for this.
3. Tape up suction and discharge ports to prevent anything from falling into pump.
4. Change engine oil and follow procedures described in
engine manual for engine storage.
5. Cover pump and engine and store in a clean, dry area.
4-7
4 PG SERIES PUMPS
PT / PG / PD REPAIR
4.12 PG Pump Assembly
1
19
2
[L1, T1] 18
3
4
17
16
5
15
6 [L2]
14
8
7
13
12
11
10
2
9
1
1033SD67
4-8
PT / PG / PD REPAIR
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DESCRIPTION
PG SERIES PUMPS 4
QTY.
Set - plug (incl. 2) ........................................................................................ 2
O-ring .......................................................................................................... 1
Screw
(PG2 - M8x25)
(PG3 - M10x30) .......................................................................................... 4
Port - discharge ........................................................................................... 1
Gasket - discharge ...................................................................................... 1
Screw .......................................................................................................... 3
(PG2 - M8x20)
(PG3 - M10x25)
Port - suction ............................................................................................... 1
Gasket - flapper valve ................................................................................. 1
Screw .......................................................................................................... 4
(PG2 - M8x22)
(PG3 - M10x25)
Housing - pump case .................................................................................. 1
Ring - tapered ............................................................................................. 1
Volute .......................................................................................................... 1
Impeller ....................................................................................................... 1
O-ring .......................................................................................................... 1
Flange - mounting ....................................................................................... 1
Washer - shim ............................................................................................. 3
Seal - mechanical ........................................................................................ 1
Screw M8x60 .............................................................................................. 4
Washer - seal .............................................................................................. 4
[L1] - 0029312
[T1] - 16 ft.lbs. (22 Nm)
[L2] - 0029311
[T2] - 26 ft.lbs. (37 Nm)
4-9
4 PG SERIES PUMPS
PT / PG / PD REPAIR
4.13 Inspecting Pump
Before disassembling pump, check for conditions both
outside and inside the pump which could affect performance.
Inspecting Outside Pump:
Inspecting Inside Pump:
•
CHECK THAT THE PUMP IS OPERATING WITHIN
SPECIFICATIONS.
Remember that as suction lift and discharge head
increases, pump output is reduced.
• CHECK FOR DEBRIS AND DIRT INSIDE PUMP
CASING.
If allowed to accumulate, it may restrict flow through
the pump or impede the movement of the impeller.
•
CHECK TYPE OF FLUID BEING PUMPED.
Pump will perform poorly if used to pump heavy
sludges or mud.
• CHECK ENGINE OPERATING SPEED.
3600 ±100 RPM
•
CHECK SUCTION HOSE FOR LEAKS OR DAMAGE.
A puncture or tear above the water line will make the
pump difficult or impossible to prime.
•
•
CHECK THAT SUCTION HOSE IS CORRECT TYPE.
Suction hose must have strong rigid walls. Thinwalled collapsible hoses like those used on the discharge side cannot be used.
CHECK THAT STRAINER HOSE LINES ARE NOT
BLOCKED OR RESTRICTED.
Remove any dirt, debris or vegetation which might
interfere with pump flow. If possible, flush hose lines
with clear water at the end of each operation and
suspend strainer in water, rather than rest on sandy or
muddy bottom. Check that discharge hose is not
kinked.
•
CHECK THAT ALL FITTINGS AND HOSE CLAMPS
ON SUCTION LINE ARE TIGHT AND SEALING
PROPERLY.
Fittings and clamps may loosen during operation.
Add additional clamps where necessary to ensure
good seal.
•
CHECK THAT PUMP CASE WAS FILLED WITH
WATER AND PRIME PLUG SEALED TIGHTLY,
BEFORE START-UP.
As engine operating RPM falls, pump capacity and
discharge head are reduced.
• CHECK FLAPPER VALVE AND INLET PORT FOR
LEAKS OR DAMAGE.
If flapper valve is worn or distorted it may not seal
tightly. Inspect threads on inlet port nipple for deep
scratches which could allow air leaks.
• CHECK CLEARANCE BETWEEN IMPELLER AND
VOLUTE INSERT.
Additional shims are required to maintain clearance
as impeller wears.
• CHECK PUMP HOUSING O-RING AND REAR
PUMP FLANGE.
Replace O-Ring if torn or crushed. Make sure cover
is tightened evenly. Check that rear plate is not
warped.
• CHECK FOR WATER LEAK BETWEEN PUMP
HOUSING AND ENGINE. INSPECT MECHANICAL
SEAL LUBRICANT AND ENGINE OIL.
The presence of water indicates a loose impeller bolt
or damage to mechanical seal.
• CHECK FOR OIL LEAK BETWEEN PUMP HOUSING AND ENGINE.
An oil leak indicates a failed shaft seal.
• CHECK PUMP SUCTION WITH VACUUM GAUGE.
If gauge reading is above 16 in. Hg (55 KPa), problem
is probably outside the pump, in hose line or fitting.
4-10
PT / PG / PD REPAIR
PG SERIES PUMPS 4
4.14 Flapper Valve
The flapper valve (1) is located at the pump inlet (2). During operation, this valve is open allowing a free path for water
to flow into the pump case. When the pump is stopped, it closes and prevents water in the suction line from being lost.
A leak around the flapper gasket will cause the suction line to lose its prime and make the pump difficult or impossible
to operate.
Recommended tools:
Socket wrench - 1/2" (13mm)
Phillips head screwdriver
Removal:
Installation:
1. Remove three screws (3) mounting suction (inlet)
port (2) to pump.
3. Install new flapper valve assembly, with large washer
(4) facing suction port. This washer acts as a counterweight and helps seal the flapper gasket against
the pump inlet when pump stops.
2. Remove inlet port and flapper valve assembly (1).
4. Mount inlet port (2) to pump. Secure with screws (3)
evenly until flapper gasket begins to compress. Use
Loctite 243 or an equivalent medium strength
threadlocker on screws.
CAUTION: DO NOT overtighten. Overtightening may
distort flapper gasket causing an air leak at inlet port.
1
4
3
2
1033SD69
4-11
4 PG SERIES PUMPS
PT / PG / PD REPAIR
4.15 Frame Assembly
Recommended tools:
Socket wrench - 1/2" (13mm)
Removal:
1. Remove four screws (1) and nuts (2) mounting pump/
engine (3) to frame (4).
Installation:
1. Mount pump / engine (3) to frame (4) using screws (1)
and nuts (2). Apply Loctite 243 or an equivalent
medium strength threadlocker and torque to 26 ft.lbs.
(35 Nm).
3
Note: See sealant and torque reference charts in back
of book for appropriate threadlocking adhesives and
torque values.
1
WARNING
Before you start the machine, ensure that all tools
have been removed from the machine and that
replacement parts and adjusters are firmly tightened.
4
2
1033SD70
4-12
PT / PG / PD REPAIR
PG SERIES PUMPS 4
4.16 Pump Housing
Recommended tools:
Socket wrench - 1/2" (13mm)
Rubber / Plastic mallet
Removal:
Installation:
1. Remove drain plug (5) from bottom of housing and
drain water from pump case.
1. Check clearance between impeller (11) and volute
(9). Add shims as required. See Section 4.10
Adjusting Impeller Clearance.
2. Remove four screws (6) mounting pump housing (7)
to the back pump flange (8).
2. Inspect O-Rings (12) and (10). Grease O-Rings
lightly before assembly. Make sure areas where ORings seat are clean.
3. Lightly tap housing with mallet to break seal and
remove housing.
3. Mount pump housing (7) to flange (8). Secure evenly
with screws (6). Torque to 26 ft.lbs. (37 Nm).
4. Thoroughly clean debris from pump housing (7),
volute (9), and flange (8).
Note: Pump housing MUST seal flush around rear
flange. Replace pump flange if it appears warped or bent.
5. Remove volute (9) and clean O-Ring (10) and intake
port.
11
8
12
7
10
9
5
6
1033SD72
4-13
4 PG SERIES PUMPS
PT / PG / PD REPAIR
Impeller / Mechanical Seal Assembly
4
2
11
E-50
10
3
9
8
1
7
PE-50
1019SD88
3
6
5
4-14
PT / PG / PD REPAIR
PG SERIES PUMPS 4
4.17 Impeller
CAUTION: When replacing either the impeller (1) or rear pump flange (2), make note of the I.D. numbers found on
back of each component casting (3). MAKE SURE REPLACEMENT PARTS HAVE THE SAME NUMBER
MARKINGS–THEY ARE NOT INTERCHANGEABLE.
Recommended tools:
Socket wrench - 1/2" (13mm)
Allen wrench - 6mm
Plastic / rubber mallet
Removal:
Installation:
1. Remove pump housing. See Section 4.16 Pump
Housing.
1. Mount rear pump flange (2) to engine. Secure with
screws (5) and washers (6). Apply Loctite 271 or an
equivalent high strength threadlocker and torque to
16 ft.lbs. (22 Nm)
2. Unscrew impeller (1) counterclockwise from engine
shaft (4).
Note: If the impeller is hard to remove, tap it with a plastic
mallet. Do not lose any adjusting shims.
3. Remove four screws (5) and washers (6) mounting
rear pump flange (2) to engine.
Note: Install rear pump flange with drain channel facing
down.
2. Install mechanical seal. See Section 4.18 Mechanical
Seal Replacement.
3. Screw impeller (1) clockwise onto engine shaft. DO
NOT apply any threadlocker to threads of impeller or
engine shaft.
4.18 Mechanical Seal Replacement
Removal:
Installation:
1. Remove the impeller (1). See Section 4.17 Impeller.
1. Clean engine shaft, remove any rust. Also clean
contact surface of ceramic and carbon faces with a
clean cloth. DO NOT lubricate seal faces.
Note: Do not lose any adjusting shims (7).
2. Remove mechanical seal spring (8) and carbon
face (9) from engine shaft.
3. Remove mechanical seal ceramic face (10) and
L-ring (11) from rear pump flange.
2. Place ceramic face (10) in L-ring (11) and install in
pump flange.
3. Carefully place carbon face (9) and seal spring (8)
on engine shaft.
4. Mount impeller to engine shaft. Turn impeller shaft
clockwise to tighten.
4-15
4 PG SERIES PUMPS
PT / PG / PD REPAIR
4.19 Testing
Suction Test
Required Tools:
Vacuum Gauge - P/N 28755
Tachometer
1. Fill pump housing with cold water until it flows out from
discharge port.
2. Tighten pump cover and prime plug.
3. Bring engine up to operating speed. Check engine
RPM. See Section 1.13 Technical Data for PG engine
speeds.
Note: Keep pump housing filled with water at all times
while pump is running. If too much water is lost during test
procedure, stop engine and reprime pump. It may be
necessary to tilt pump or partially cover discharge port, to
prevent water in the pump housing from being lost while
still allowing air to be vented.
4. Grease mounting face of vacuum gauge (1), to ensure a good seal. Press gauge over inlet port.
5. Gauge reading should slowly climb and then hold
steady.
6. With gauge still against inlet port, turn off engine.
Gauge reading should not change.
1
Note: See vacuum chart for appropriate gauge readings.
This test MUST be completed within a few minutes to
prevent the water in the pump housing from getting hot,
which will result in lower readings. If possible, allow cold
water to run into discharge port while testing pump.
in.Hg
(KPa)
4-16
1033SD75
1033SD65
Excellent
Satisfactory
20–24
(68–82)
16–20
(55–68)
PT / PG / PD REPAIR
PG SERIES PUMPS 4
4.20 Troubleshooting
Problem / Symptom
Reason / Remedy
Pump does not take in water.
1.
2.
3.
4.
5.
Pump takes in water, little or no discharge.
1. Engine speed too low. Adjust speed.
2. Suction strainer partially plugged. Clean strainer.
3. Impeller worn. Adjust clearance by adding shims or
replace impeller.
4. Volute worn or damaged. Adjust clearance or replace
volute.
Suction hose leaks at inlet.
1. Clamps are not sealing properly. Tighten, replace, or add
clamp.
2. Hose diameter is too large.
3. Hose is damaged.
Discharge hose does not stay on coupling.
1. Pressure may be too high for clamps being used. Add
another clamp.
2. Hose kinked or end blocked. Check hose.
Impeller does not turn; pump is hard to
start.
1. Impeller jammed or blocked. Open pump cover and clean
dirt and debris from inside of pump housing.
2. Impeller and volute binding. Adjust clearance by removing shim(s) from behind impeller.
Not enough priming water in housing.
Engine speed too low. Adjust speed.
Strainer plugged. Clean strainer.
Suction hose damaged. Replace or repair hose.
Air leak at suction port. Check that fittings are tight and
sealing properly.
6. Pump too high above water.
7. Debris collecting in pump housing. Clean pump housing.
8. Too much clearance between impeller and volute.
4-17
4 PG SERIES PUMPS
Notes:
4-18
PT / PG / PD REPAIR
PT / PG / PD REPAIR
PD SERIES PUMPS 5
Table of Contents
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
5.16
5.17
5.18
5.19
5.20
5.21
5.22
Description and Operation ....................................................................... 5-2
Periodic Maintenance Schedule .............................................................. 5-3
Air Cleaner .............................................................................................. 5-4
Engine Oil ............................................................................................... 5-4
Spark Plug .............................................................................................. 5-5
Carburetor Adjustment ............................................................................ 5-5
Cleaning Sediment Cup .......................................................................... 5-6
Adjusting Idle Speed ............................................................................... 5-6
Gear Case .............................................................................................. 5-6
Connecting Rod Bearing ......................................................................... 5-7
Cleaning Pump ........................................................................................ 5-7
Storage ................................................................................................... 5-7
PD Pump Assembly ................................................................................ 5-8
Gearbox Assembly ................................................................................ 5-10
Inspecting Pump ................................................................................... 5-12
Flapper Valve ........................................................................................ 5-13
Diaphragm ............................................................................................ 5-14
Connecting Rod & Bearing .................................................................... 5-16
Engine ................................................................................................... 5-17
Gearcase .............................................................................................. 5-18
Testing .................................................................................................. 5-20
Troubleshooting .................................................................................... 5-21
5-1
5 PD SERIES PUMPS
5.1
PT / PG / PD REPAIR
Description and Operation
PD Series Pumps use a diaphragm (1) and two flapper
valves (2) & (3) to create the suction and discharge
pressures required for pump operation.
The pump engine operates a large rubber diaphragm
through a 6:1 reduction gear box, engine shaft and
connecting rod (4).
When the diaphragm (1) is pulled up, a vacuum is
created in the pump chamber. This closes the discharge
valve (2) and opens the inlet valve (3) drawing liquid into
the pump chamber.
When the diaphragm is depressed, the resulting pressure closes the inlet port (5), opens the discharge valve
and the liquid is forced out through the pump outlet (6).
This pumping action has several advantages. Since the
pumping action is due only to the suction and pressure
created by the movement of the diaphragm, there are no
close tolerances to be held. This fact along with large
valve openings, allow very thick and heavy liquids to be
passed through the pump with no jamming or clogging.
A suction inlet port (7) on the intake side of the pump,
absorbs sharp back pressure spikes which occur when
the inlet valve (3) closes on the downward stroke of the
diaphragm.
PD Series Pumps do not need priming under normal
conditions. However, for high lifts or if pump valves are
dry, fill pump box with water before initial start-up. Add
water through fill plug (8) on top of surge chamber.
4
1
6
Since this is a positive displacement pump, it can handle
large volumes of air along with the fluid being pumped.
This allows the pump to keep operating even if the
strainer is not completely submerged, or is temporarily
interrupted.
7
8
2
3
5
1033SD79
5-2
PT / PG / PD REPAIR
5.2
PD SERIES PUMPS 5
Periodic Maintenance Schedule
The chart below lists basic pump and engine maintenance. Refer to engine manufacturer’s Operation Manual for
additional information on engine maintenance. A copy of the engine Operation Manual was supplied with the machine
when it was shipped.
PDT2A
PDI2A
PDT3A
PDI3A
Check fluid level.
•
•
Check engine oil level.
•
•
Inspect air cleaner. Clean as needed.
•
•
Check and tighten external hardware.
•
•
•
•
Clean air cleaner.
•
•
Grease pump connecting rod bearing.
•
•
Check and clean spark plug.
•
•
Clean sediment cup.
•
•
Change engine oil and replace filter.
•
•
Check and adjust valve clearances.
•
•
Change oil in pump gearcase.
•
•
DAILY (Before Starting)
NEW ENGINE BREAK-IN (First 20 hrs.)
Change engine oil and replace filter.
EVERY 2 WEEKS (50 hrs.)
EVERY MONTH (100 hrs.)
EVERY 3 MONTHS (300 hrs.)
5-3
5 PD SERIES PUMPS
5.3
PT / PG / PD REPAIR
Air Cleaner
Service air cleaner frequently to prevent carburetor malfunction.
NEVER run engine without air cleaner. Severe engine
damage will occur.
NEVER use gasoline or other types of low flash point
solvents for cleaning the air cleaner. A fire or explosion
could result.
a
c
The engine is equipped with a dual element air cleaner.
1. Remove air cleaner cover (a). Remove both elements
and inspect them for holes or tears. Replace damaged elements.
b
2. Foam Element (b)
Wash in solution of mild detergent and warm water.
Rinse thoroughly in clean water. Allow element to dry
thoroughly.
Soak element in clean engine oil and squeeze out
excess oil.
1001SD12
3. Paper element (c)
Tap element lightly to remove excess dirt or blow
compressed air through filter from the inside out.
Replace paper element if it appears heavily soiled.
5.4
Engine Oil
Drain oil while engine is still warm.
d
1. Remove oil fill plug (d) and drain plug (e) to drain oil.
2. Install drain plug.
3. Fill engine crankcase with recommended oil up to
level of plug opening (f).
f
Oil capacity: 21 oz. (0.6 liters)
4. Install oil filler plug.
e
1005SD53
5-4
PT / PG / PD REPAIR
5.5
PD SERIES PUMPS 5
Spark Plug
Clean or replace spark plug as needed to ensure proper
operation. Refer to the engine Owner’s Manual.
0.028–0.031 in.
(0.7–0.8 mm)
Recommended Plug: (NGK) BPR 6ES
BOSCH WR 7DC
WARNING
The muffler becomes very hot during operation and
remains hot for a while after stopping the engine. Do
not touch the muffler while it is hot.
1. Remove spark plug and inspect it.
2. Replace plug if the insulator is cracked or chipped.
Clean spark plug electrodes with a wire brush.
3. Set gap to 0.028–0.031" (0.7–0.8 mm).
1006SD37
4. Tighten spark plug securely.
CAUTION: A loose spark plug can become very hot
and may cause engine damage.
5.6
Carburetor Adjustment
1. Start engine and allow it to warm up to operating
temperature.
2. Set pilot screw (g) 2 turns out. See Note.
3. With the engine idling, turn pilot screw (g) in or out to
the setting that produces the highest rpm.
4. After pilot screw is adjusted, turn throttle stop screw
(h) to obtain the standard idle speed, 1400 ±150 rpm.
Note: On some engines the pilot screw is fitted with a
limiter cap (j) to prevent excessive enrichment of the airfuel mixture in order to comply with emission regulations.
The mixture is set at the factory and no adjustment should
be necessary. Do not attempt to remove the limiter cap.
The limiter cap cannot be removed without breaking the
pilot screw.
h
j
g
1015SD05
5-5
5 PD SERIES PUMPS
5.7
PT / PG / PD REPAIR
Cleaning Sediment Cup
Turn fuel valve off. Remove sediment cup (a) and O-ring
(b). Wash them thoroughly in a nonflammable solvent.
Dry them and re-install. Turn fuel valve on and check for
leaks.
b
a
1001SD13
5.8
Adjusting Idle Speed
To adjust idle speed:
1. Start engine and allow it to warm up to normal operating temperature.
2. Turn throttle stop screw (c) in to decrease speed, out
to increase speed.
c
1017SD58
5.9
Gear Case
Check the oil level in the gear case once a week or every
25 hours of operation.
Remove oil level plug (e). Check that oil level is even with
plug opening. If oil level is low, add oil through the top fill
plug opening (d). Do not overfill.
d
e
Change oil in gear case once a year or every 300 hours
of operation.
Drain oil through drain plug opening (f) at bottom of gear
case. Add oil through fill plug on top of gear case.
Oil capacity: 32 oz. (1000 ml)
SAE 30
f
5-6
1010SD50
PT / PG / PD REPAIR
PD SERIES PUMPS 5
5.10 Connecting Rod Bearing
Grease connecting rod bearing once a week or every 25
hours of operation.
Use a hand-operated grease gun. Add grease through
grease fitting located behind access hole (h) provided on
front cover.
g
h
5.11 Cleaning Pump
When pumping heavy sludges or water containing large
amounts of dirt and solids, clean the pump often. If
allowed to sit in the pump and dry, these materials will
harden and could damage the valves or diaphragm
inside the pump the next time it is used.
When cleaning pump:
1. Pump clean water through pump for a few minutes
after each use to flush dirt from inside pump and
hoses.
1010SD51
2. Remove dirt from between engine cooling fins to
prevent them from clogging up. This will prevent
engine from overheating.
3. Remove front cover (g) and clean dirt and grease
build-up from connecting rod and inside of front pump
cover.
5.12 Storage
If pump is being stored for more than 30 days:
1. Clean pump as described in Section 5.11 Cleaning
Pump.
2. Drain out any water left in the pump housing.
3. Remove pump cover and clean inside of pump housing. Spray connecting rod and inside of pump cover
with a light film of oil.
4. Tape up suction and discharge ports to prevent anything from falling into pump.
5. Change engine oil and follow procedures described in
engine manual for engine storage.
6. Cover pump and engine and store in a clean, dry area.
5-7
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.13 PD Pump Assembly
4
5
6
4
8
7
3
9 [T1]
46
10
3
2
1
11
26 [T2]
12
15
13
14
12
12
14
15
13
17
28
16
[T2] 27
18
29
19
20
22
21
23
30
24
25
34 [L1, T3]
45
26
31
40
47
[T3] 35
37
39
32
41
38
42
36
40
43
33
39
44
38
37
36
35
5-8
[L1, T3] 34
1015SD57
PT / PG / PD REPAIR
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
PD SERIES PUMPS 5
DESCRIPTION
QTY.
Cover - gearbox .......................................................................................... 1
Fitting - grease ............................................................................................ 1
Screw #10-32x1/2 ....................................................................................... 6
Washer - retaining ....................................................................................... 2
Connecting rod ............................................................................................ 1
Bearing - cam follower ................................................................................ 1
Crank - arm ................................................................................................. 1
Seal - oil ...................................................................................................... 1
Screw 1/2x1-1/2 .......................................................................................... 1
Setscrew ..................................................................................................... 1
Screw 5/16-18x2 ......................................................................................... 2
Washer 5/16 ................................................................................................ 6
Shim - engine .............................................................................................. 8
Washer - lock 5/16 ...................................................................................... 4
Nut 5/16 ...................................................................................................... 4
Screw 5/16-18x2-1/4 ................................................................................... 2
Bracket - bumper ........................................................................................ 1
Screw .......................................................................................................... 2
Bracket ........................................................................................................ 1
Washer - lock .............................................................................................. 2
Nut .............................................................................................................. 2
Axle ............................................................................................................. 1
Wheel .......................................................................................................... 2
Washer ....................................................................................................... 2
Pin - cotter ................................................................................................... 2
(PD2) Stud .................................................................................................. 3
(PD3) Bolt - carriage ................................................................................... 3
Screw 1/2x2-1/4 .......................................................................................... 4
Screw #10-24x1/2 ....................................................................................... 2
Housing - pump case .................................................................................. 1
Diaphragm - TPE, (standard) ...................................................................... 1
Diaphragm - rubber, (optional) .................................................................... 1
Plug 2", priming ........................................................................................... 1
Port - suction (inlet) ..................................................................................... 1
Fitting - NPT ................................................................................................ 1
Washer - lock (incl. 36) ............................................................................... 4
Screw #10-32x1/2 ....................................................................................... 4
Weight - retainer valve ................................................................................ 2
Gasket - flapper valve ................................................................................. 2
Weight - flapper valve ................................................................................. 2
Pin 1/8x3/8, spring ...................................................................................... 2
Washer - lock .............................................................................................. 4
Nut 1/2 ........................................................................................................ 4
Housing - water box .................................................................................... 1
Handle - towing pole ................................................................................... 1
Flange - discharge ...................................................................................... 1
Nut - lock ..................................................................................................... 1
Axle - stub ................................................................................................... 2
[L1] - (0026695)
[T1] - 55–60 ft.lbs. (75–81 Nm)
[T2] - 35–40 ft.lbs. (48–54 Nm)
[T3] - 16–20 ft.lbs. (22–27 Nm)
5-9
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.14 Gearbox Assembly
1
7
6
29
5
4
3
2
8
9
10
11
12 [T1]
20
17
16
19 [T2]
21
22
15
18
14
23
11
24
25
26
13
27
14
28 [T3]
1015SD56
5-10
PT / PG / PD REPAIR
REF.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
PD SERIES PUMPS 5
DESCRIPTION
QTY.
Screw 1/2-13x2-1/2 (incl. washer) .............................................................. 2
Gearbox ...................................................................................................... 1
Plug - oil 3/8-18 ........................................................................................... 1
Gasket - gearbox ........................................................................................ 1
Bearing ........................................................................................................ 1
Key - woodruff ............................................................................................. 2
Gear ............................................................................................................ 1
Shaft - gear ................................................................................................. 1
Gear - internal ............................................................................................. 1
Gear - pinion ............................................................................................... 1
Bearing ........................................................................................................ 2
Screw 1/2-13x1-3/4 (incl. washer) .............................................................. 2
Bearing ........................................................................................................ 1
Pin 1/4x3/4, dowel ....................................................................................... 2
Cover .......................................................................................................... 1
Hook - lifting ................................................................................................ 1
Screw 1/4x1-1/4 (incl. lock washer) ............................................................ 2
Key .............................................................................................................. 1
Screw 5/16-18x1 (incl. lock washer) ........................................................... 4
Adapter - engine .......................................................................................... 1
O-Ring ........................................................................................................ 1
Retaining Ring ............................................................................................. 1
Screw 5/16-24x1 (incl. lock washer) ........................................................... 4
Bearing ........................................................................................................ 1
Gear - pinion ............................................................................................... 1
Bearing - needle .......................................................................................... 1
Plug - oil 1/8 NPT ........................................................................................ 2
Screw 1/4x1 (incl. lock washer) .................................................................. 9
Handle - towing pole ................................................................................... 1
[T1] - 55–60 ft.lbs. (75–81 Nm)
[T3] - 7–8 ft.lbs. (9.5–11 Nm)
[T2] - 10–11 ft.lbs. (14–15 Nm)
5-11
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.15 Inspecting Pump
Before disassembling pump, check for conditions both
outside and inside the pump which could affect performance.
Inspecting Outside Pump:
Inspecting Inside Pump:
•
• CHECK THAT BOLTS AROUND DIAPHRAGM ARE
SECURE AND TIGHTENED EVENLY.
A loose bolt will prevent a good seal around gasket.
•
CHECK THAT THE PUMP IS OPERATING WITHIN
SPECIFICATIONS.
Remember that as suction lift and discharge head
increases, pump output is reduced. On the PD Series
Pumps, discharge head CANNOT exceed 25' (7.6m).
CHECK TYPE OF FLUID BEING PUMPED.
Although the PD Series Pumps are designed to handle
heavy sludges and muddy water, the mixture must be
fluid enough to flow freely.
•
CHECK SUCTION HOSE FOR LEAKS OR DAMAGE.
A puncture or tear above the water line will make the
pump difficult or impossible to prime.
•
CHECK THAT SUCTION HOSE IS CORRECT TYPE.
Suction hose must have strong rigid walls. Thinwalled collapsible hoses like those used on the discharge side cannot be used.
•
CHECK THAT STRAINER HOSE LINES ARE NOT
BLOCKED OR RESTRICTED.
Remove any dirt, debris or vegetation which might
interfere with pump flow. If possible, flush hose lines
with clear water at the end of each operation and
suspend strainer in water, rather than rest on sandy or
muddy bottom. Check that discharge hose is not
kinked.
•
CHECK THAT ALL FITTINGS AND HOSE CLAMPS
ON SUCTION LINE ARE TIGHT AND SEALING
PROPERLY.
Fittings and clamps may loosen during operation.
Add additional clamps where necessary to ensure
good seal.
•
CHECK THAT SUCTION HOSE RUNS EVEN WITH
OR DOWN HILL FROM PUMP.
If the suction line is elevated above pump inlet, back
pressure in the hose may prevent pump inlet valve
from sealing. Discharge rate is reduced.
•
CHECK THAT PRIME PLUG IS TIGHT. PRIME FOR
HIGH LIFTS OR WHEN VALVE RUBBERS ARE
DRY, TO IMPROVE SUCTION UPON INITIAL
START-UP.
5-12
• CHECK ENGINE OPERATING SPEED.
3000 ±100 RPM
As engine operating RPM falls, pump capacity and
discharge head are reduced.
• CHECK FLAPPER VALVE AND INLET PORT FOR
LEAKS OR DAMAGE.
If flapper valve is worn or distorted it may not seal
tightly. Inspect threads on inlet port nipple for deep
scratches which could allow air leaks.
• CHECK FOR DEBRIS AND DIRT INSIDE PUMP
CASING.
Dirt and debris trapped under the diaphragm may
interfere with its operation. This may occur if a strainer
was not attached to the suction line, allowing large
particles to enter the pump box. Always attach a
strainer to suction hose.
Large solids can also form under the diaphragm, if
sludge or mud from last application is allowed to
harden in pump box without being flushed.
• CHECK DIAPHRAGM FOR CRACKS, PUNCTURES
OR TEARS.
A damaged diaphragm will not produce sufficient
suction or discharge pressure.
• CHECK PUMP SUCTION WITH VACUUM GAUGE.
If gauge reading is above 16 in. Hg (55 KPa), problem
is probably outside the pump, in hose line or fitting.
PT / PG / PD REPAIR
PD SERIES PUMPS 5
5.16 Flapper Valve
Recommended tools:
Socket wrench - 3/8"
Screwdriver
Removal:
Installation:
1. Remove two screws (1) and washers (2) mounting
either the suction (inlet) port (3) or discharge port (4)
to pump water box (5).
1. Install new flapper valve assembly, with small weight
(8) toward intake side of each valve.
2. Tighten screws (9) on valve weights until rubber
begins to compress.
2. Remove flapper valves (6).
3. Remove large weights (7) and small weights (8) from
each side of flapper valve.
CAUTION: DO NOT overtighten. Overtightening may
distort rubber gasket, preventing it from sealing properly.
3. Use dowel pins (10) on pump water box (5) and
position flapper valves.
4. Mount suction (inlet) port (3) or discharge port (4) to
pump using screws (1) and washers (2). Torque to
16–20 ft.lbs (22–27 Nm).
CAUTION: DO NOT overtighten. Overtightening may
distort flapper gasket causing an air leak at inlet port.
4
1
10
7
5
8
2
6
7
9
10
3
6
8
9
2
1
1033SD82
5-13
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.17 Diaphragm
4
6
2
3
11
1
10
7
13
9
8
12
A
C
D
5
B
1033SD84
1033SD85
5-14
PT / PG / PD REPAIR
5.17
PD SERIES PUMPS 5
Diaphragm (cont.)
Recommended tools:
Socket wrench - 3/4"
Screwdriver
Pry bar
Removal:
Installation:
1. Remove connecting rod cover (1).
2. With stop switch against spark plug, pull starter until
crank arm (2) is in its uppermost position.
1. Position new diaphragm (13) in between mounting
plate (12) and connecting rod (11). Secure with
either screws (8) or studs (9) and nuts (10). Torque
nuts to 35–40 ft. lbs. (48–54 Nm).
3. Loosen screw (3) mounting crank arm to gear shaft.
See Section 5.20 Gearcase.
2. Mount crank arm (2) to gear shaft. Secure with screw
(3) and torque to 55–60 ft. lbs. (75–81 Nm).
4. Remove four screws (4) mounting water box (5) to
pump frame (6).
3. Carefully position connecting rod / diaphragm assembly (7) between pump frame (6) and water box
assembly (5). Secure with four screws (4). Torque
screws to 23 ft. lbs. (32 Nm.)
5. Lower water box assembly (5) from pump frame (6)
and remove connecting rod / diaphragm assembly
(7).
6. Remove three screws (8) or studs (9) and nuts (10)
mounting connecting rod (11) and mounting plate
(12) to diaphragm (13).
CAUTION: Tighten bolts evenly, in progressive steps
A-B-C &D, to ensure a tight seal around diaphragm.
When assembled correctly, diaphragm should be compressed to approx. 3/8" (9.5 mm) around entire circumference.
4. Replace crank arm cover (1).
5-15
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.18 Connecting Rod & Bearing
Recommended tools:
Socket wrench 1-1/8"
Allenwrench 5/32"
Screwdriver
Removal:
Installation:
1. Remove connecting rod / diaphragm assembly. See
Section 5.17 Diaphragm.
1. Insert bearing needles (9) into connecting rod (5).
2. Remove crank arm retaining nut (1).
Note: Use grease to hold needles in place during installation.
3. Loosen crank arm setscrew (2) .
2. Insert bearing cam (6) into connecting rod.
4. Remove three screws (3) mounting retaining washers (4) to both sides of connecting rod (5).
3. Mount retaining washers (4) to both sides of connecting rod using three screws (3).
5. Support connecting rod (5) in an arbor press. Press
on threaded end of bearing cam (6) to remove it.
4. Support bearing shaft in arbor press and press crank
arm (8) onto bearing shaft. Secure crank arm using
setscrew (2) and nut (1).
CAUTION: When bearing shaft is pressed out of crank
arm, 25 bearing needles (9) will be free, and may fall out
of the bearing race. If the bearing is to be reused, use
care to avoid losing any bearing needles. DO NOT press
on grease fitting (7) in bearing shaft!
5. Before mounting connecting rod / diaphragm assembly, scrape edges around diaphragm clean. See
Section 5.17 Diaphragm for installation procedure.
4. After asssembly, grease bearing with Shell Alvania
#2 through fitting (7).
8
3
6
1
9
2
4
4
7
3
5
1033SD86
5-16
PT / PG / PD REPAIR
PD SERIES PUMPS 5
5.19 Engine
Recommended tools:
Socket wrench - 1/2" (13mm)
Removal:
Installation:
1. Remove drain plug (1) from bottom of gearbox and
drain oil. Install plug back into gearbox.
1. Position engine (5) on pump housing.
Note: Turn engine shaft to align key (13) with keyway in
engine adapter (4).
2. Remove four screws (2) and lock washers (3) mounting engine adapter (4) to engine (5).
2. Slide engine into gearbox.
3. Remove two screws (6), washers (7), lock washers
(8), and nuts (9) mounting bumper bracket (10) and
rear part of engine to pump housing.
3. Mount engine (5) to engine adapter (4) using four
screws (2) and lock washers (3).
4. Remove two screws (11), four washers (7), two lock
washers (8), and nuts (9) mounting front part of
engine to pump housing.
4. Mount front part of engine to pump housing using two
screws (11), four washers (7), two lock washers (8),
and nuts (9).
5. Pull engine away from gearbox until engine shaft is
clear of engine adapter (4).
Note: Place two shims (12) as shown between engine
and pump housing prior to tightening mounting hardware. Also note configuration of hardware.
Note: When removing engine, keep in mind there are
shims (12) between pump housing and engine. DO NOT
throw away shims. They are to be reused when mounting
engine to pump housing.
5. Mount rear part of engine and bumper bracket (10) to
pump housing using two screws (6), washers (7),
lock washers (8), and nuts (9).
6. After installation, make sure drain plug (1) is installed
and fill gearbox with oil. See Section 1.14 Technical
Data (PD2/PD3) for lubrication specifications.
4
11
7
1
12
8
9
13
9
8
7
3
5
2
12
10
6
1033SD99
5-17
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.20 Gearcase
14
13
15
22
1
10
9
11
18
16
21
12
17
4
10
8
2
19
5
20
6
3
7
1033SD91
5-18
PT / PG / PD REPAIR
5.20
PD SERIES PUMPS 5
Gearcase (cont.)
Recommended tools:
Socket wrench - 7/16"
Pry bar
Allen wrench - 1/4"
Removal:
Installation:
1. Remove engine from pump housing. See Section
5.19 Engine.
1. Inspect all gaskets, seals, and bearings between
pump components and replace if necessary.
2. Remove connecting rod cover (1).
2. Press pinion gear (20) and internal gear (19) into
gearbox (7).
3. With stop switch against spark plug, pull starter until
crank arm (2) is in its uppermost position.
4. Loosen screw (3) mounting crank arm (2) to gear
shaft (4). Pry crank arm off gear shaft.
5. Remove four screws (5) and lock washers (6) mounting gearbox (7) to pump housing.
3. Align keys on shaft (21) with slots in gearbox and gear
(18) and press into gearbox.
4. Align pinion gear (17) and press into gearbox cover
(11). Install retaining ring (16).
6. Lift gearbox from pump housing.
5. Mount engine adapter (15) to gearbox cover using
four screws (13) and lock washers (14). Torque
screws to 10–11 ft.lbs. (14–15 Nm).
7. Remove nine screws (8), two screws (9), and lock
washers (10) mounting gearbox cover (11) to gearbox (7).
6. Mount gearbox cover (11) to gearbox (7) using nine
screws (8) and lock washers (10). Torque screws to
7–8 ft.lbs. (9.5–11 Nm).
CAUTION: When separating the cover from gearbox,
be careful not to damage gasket (12).
7. Mount lifting bracket (22) to gearbox cover (11) using
two screws (9) and lock washers (10).
8. Remove four screws (13) and lock washer (14)
mounting engine adapter (15) to gearbox cover (11).
8. Mount gearbox assembly to pump housing using four
screws (5) and lock washers (6). Torque screws to
55–60 ft.lbs. (75–81 Nm).
9. Remove retaining ring (16) and pull pinion gear (17)
from gearbox cover.
9. Mount crank arm (2) to gear shaft (4). Secure with
screw (3) and torque to 55–60 ft. lbs. (75–81 Nm).
10. Pull gear (18) and shaft (4) from gearbox (7).
11. Pull internal gear (19) and pinion gear (20) from
gearbox (7).
10. Install engine to gearbox and pump housing. See
Section 5.19 Engine.
11. Mount connecting rod cover (1).
5-19
5 PD SERIES PUMPS
PT / PG / PD REPAIR
5.21 Testing
Suction Test
Required Tools:
Vacuum Gauge - P/N 28755
Tachometer
1. Check that mounting hardware for diaphragm and
valves are tight.
2. If valves are dry, run pump for a few minutes while
adding water through prime plug in suction chamber.
This will wet rubber gaskets in valves and provide a
better seal while testing.
3. Replace prime plug and tighten.
4. Bring engine up to operating speed. Check engine
RPM.
3000 ±100 RPM
5. Grease mounting face of vacuum gauge (1), to ensure a good seal. Press gauge over inlet port.
Note: It is not necessary to keep water in the pump case
while testing diaphragm pumps. This pump design does
not use a mechanical seal, which requires water in the
pump case to keep seal surfaces cool.
6. Gauge reading will fluctuate slightly as connecting rod
operates diaphragm.
1
A HIGH reading of 16 in.Hg (55 KPa) is good.
The pump may operate satisfactorily even at readings
less than this. The valve’s rubber gaskets seal better
while pump is actually working.
5-20
1034SD04
1033SD65
PT / PG / PD REPAIR
PD SERIES PUMPS 5
5.22 Troubleshooting
Problem / Symptom
Reason / Remedy
Engine does not start.
1. Engine problem. See engine manufacturer’s service manual for
troubleshooting and repair.
2. Engine oil level too low. Add oil to engine.
3. Pump housing filled with dirt and debris. Disassemble and
clean inside of pump.
4. Pump gear case damaged. Inspect and repair.
Engine starts but pump does not
take in water.
1. Pump is located too high above or too far away from water.
Locate pump closer to water.
2. Air leak on suction side of pump. Check that hose fittings and
cap on surge chamber are tight and sealing properly.
3. Suction hose damaged or collapsed. Repair or replace hose.
4. Strainer plugged. Clean or replace strainer.
5. Dirt collecting inside pump and hoses, blocking flow. Clean
inside of pump and flush hoses.
6. Engine running slow. Check engine speed and adjust. See
“Technical Data” for engine speed.
7. Pump valves damaged or not seating properly. Check for
stones and gravel embedded in valves. Replace valves.
8. Diaphragm loose or damaged. Inspect diaphragm for damage.
Replace and tighten.
Pump output low.
1. Pump located too high above or too far away from water. Locate
pump closer to water.
2. Suction strainer or intake line partially plugged. Clean hose line
and strainer.
3. Discharge hose is kinked or end is blocked. Check that hose lies
straight and flows freely.
4. Discharge hose too narrow. Use hose of equal diameter or
larger than suction hose.
5-21
5 PD SERIES PUMPS
Notes:
5-22
PT / PG / PD REPAIR
SEALANTS
Use Of Threadlockers and Sealants
Threadlocking adhesives and sealants are specified throughout this manual and should be used where indicated.
Threadlocking compounds normally break down at temperatures above 350° F (175° C). If a screw or bolt is hard
to remove, heat it using a small propane torch to break down sealant. When applying sealants, follow instructions
on container. The sealants listed below are recommended for use on WACKER equipment.
TYPE
( ) = Europe
COLOR
USAGE
PART NO. - SIZE
Loctite 222
Hernon 420
Omnifit 1150 (50M)
Purple
Low strength, for locking threads smaller than 1/4" (6 mm).
Hand tool removable.
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
73287 - 10 ml
Loctite 243
Hernon 423
Omnifit 1350 (100M)
Blue
Medium strength, for locking threads larger than 1/4" (6 mm).
Hand tool removable.
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
29311 - .5 ml
17380 - 50 ml
Loctite 271 / 277
Hernon 427
Omnifit 1550 (220M)
Red
High strength, for all threads up to 1" (25 mm).
Heat parts before disassembly.
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
29312 - .5 ml
26685 - 10 ml
73285 - 50 ml
Loctite 290
Hernon 431
Omnifit 1710 (230LL)
Green
Medium to high strength, for locking preassembled threads
and for sealing weld porosity (wicking).
Gaps up to 0.005" (0.13 mm)
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
28824 - .5 ml
25316 - 10 ml
Loctite 609
Hernon 822
Omnifit 1730 (230L)
Green
Medium strength retaining compound for slip or press fit
of shafts, bearings, gears, pulleys, etc.
Gaps up to 0.005" (0.13 mm)
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
29314 - .5 ml
Loctite 545
Hernon 947
Omnifit 1150 (50M)
Brown
Hydraulic sealant
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
79356 - 50 ml
Loctite 592
Hernon 920
Omnifit 790
White
Pipe sealant with Teflon for moderate pressures.
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
26695 - 6 ml
73289 - 50 ml
Loctite 515
Hernon 910
Omnifit 10
Purple
Form-in-place gasket for flexible joints.
Fills gaps up to 0.05" (1.3 mm)
Temp. range, -65 to 300 degrees F (-54 to 149 degrees C)
70735 - 50 ml
Loctite 496
Hernon 110
Omnifit Sicomet 7000
Clear
Instant adhesive for bonding rubber, metal and plastics;
general purpose.
For gaps up to 0.006" (0.15 mm)
Read caution instructions before using.
Temp. range, -65 to 180 degrees F (-54 to 82 degrees C)
Loctite Primer T
Hernon Primer 10
Omnifit VC Activator
Aerosol
Spray
Fast curing primer for threadlocking, retaining and
sealing compounds. Must be used with stainless steel
hardware. Recommended for use with gasket sealants.
52676 - 1 oz.
2006124 - 6 oz.
TORQUE VALUES
Metric Fasteners (DIN)
WRENCH SIZE
TORQUE VALUES (Based on Bolt Size and Hardness)
8.8
Size
Ft.Lb.
8.8
10.9
10.9
12.9
Nm
Ft.Lb.
Nm
Ft.Lbs.
12.9
Nm
Inch
Metric
Inch
Metric
M3
*11
1.2
*14
1.6
*19
2.1
7/32
5.5
-
2.5
M4
*26
2.9
*36
4.1
*43
4.9
9/32
7
-
3
M5
*53
6.0
6
8.5
7
10
5/16
8
-
4
M6
7
10
10
14
13
17
-
10
-
5
M8
18
25
26
35
30
41
1/2
13
-
6
M10
36
49
51
69
61
83
11/16
17
-
8
M12
63
86
88
120
107
145
3/4
19
-
10
M14
99
135
140
190
169
230
7/8
22
-
12
M16
155
210
217
295
262
355
15/16
24
-
14
M18
214
290
298
405
357
485
1-1/16
27
-
14
M20
302
410
427
580
508
690
1-1/4
30
-
17
Ft.Lbs.
Nm
Inch
Metric
Inch
Metric
Inch Fasteners (SAE)
SAE 5
Size
Ft.Lb.
No.4
SAE 8
Nm
Ft.Lb.
*6
0.7
*14
1.0
*12
1.4
1/4
5.5
3/32
-
No.6
*12
1.4
*17
1.9
*21
2.4
5/16
8
7/64
-
No.8
*22
2.5
*31
3.5
*42
4.7
11/32
9
9/64
-
No.10
*32
3.6
*45
5.1
*60
6.8
3/8
-
5/32
-
1/4
6
8.1
9
12
12
16
7/16
-
3/32
-
5/16
13
18
19
26
24
33
1/2
13
1/4
-
3/8
23
31
33
45
43
58
9/16
-
5/16
-
7/16
37
50
52
71
69
94
5/8
16
3/8
-
1/2
57
77
80
109
105
142
3/4
19
3/8
-
9/16
82
111
115
156
158
214
13/16
-
-
-
5/8
112
152
159
216
195
265
15/16
24
1/2
-
3/4
200
271
282
383
353
479
1-1/8
-
5/8
-
1 Ft.Lb. = 1.357 Nm
Nm
* = In.Lb.
1 Inch = 25.4 mm
Wacker Construction Equipment AG
·
Preußenstraße 41
· D-80809 München
· Tel.: +49-(0)89-354 02 - 0 · Fax: +49 - (0)89-354 02-390
Wacker Corporation · P.O. Box 9007 · Menomonee Falls, WI 53052-9007 · Tel. : +1-(1)(262) 255-0500 · Fax: +1-(1)(262) 255-0550 · Tel. : (800) 770-0957
Wacker Asia Pacific Operations · Sunley Center, Unit 912, 9/F · 9 Wing Qin Street, Kwai Chung, N.T. · Hong Kong · Tel. + 852 2406 60 32 · Fax: + 852 2406 60 21
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