Service Manual 04

Service Manual 04
INTERNATIONAL® VT 365
DIESEL ENGINE
SERVICE MANUAL
SERVICE MANUAL
2004-2006 Model Years
Printed in the United States of America
EGES-295-2
2004-2006 Model Years
© 2006 International Truck and Engine Corporation
INTERNATIONAL® VT 365
DIESEL ENGINE
EGES-295-2
ENGINE SERVICE MANUAL
I
Table of Contents
Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
ENGINE SYSTEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
MOUNTING ENGINE ON STAND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY TURBOCHARGER (VGT). . . . . . . . . . . . . . . . . . . . . .55
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
CYLINDER HEAD AND VALVE TRAIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
FRONT COVER, VIBRATION DAMPER, and GEROTOR OIL PUMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
OIL PAN, UPPER OIL PAN, and OIL PICKUP TUBE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
POWER CYLINDERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183
CRANKCASE, CRANKSHAFT and BEARINGS, CAMSHAFT and BUSHINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203
OIL COOLER and FILTER HOUSING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229
ENGINE ELECTRICAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245
HIGH-PRESSURE OIL PUMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281
FUEL SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
REAR COVER, FLYWHEEL, and POWER STEERING GEAR DRIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .309
IN-CHASSIS PROCEDURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331
Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355
Appendix A – Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .363
Appendix B – Torques. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373
Appendix C – Special Service Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .389
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
II
ENGINE SERVICE MANUAL
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SERVICE MANUAL
Foreword
International Truck and Engine Corporation is
committed to continuous research and development
to improve products and introduce technological
advances. Procedures, specifications, and parts
defined in published technical service literature may
be altered.
NOTE: Photo illustrations identify specific parts or
assemblies that support text and procedures; other
areas in a photo illustration may not be exact.
This manual includes necessary information
and specifications for technicians to maintain
International® diesel engines. See vehicle manuals
and Technical Service Information (TSI) bulletins for
additional information.
1
Technical Service Literature
1171814R2
VT 365 Engine Operation and
Maintenance Manual
EGES-295-2
VT 365 Engine Service Manual
EGES-240
VT 365 Engine Diagnostic Manual
EGED-245
VT 365 Hard Start and No Start
Diagnostic Form
EGED-250
VT 365 Performance Diagnostics
Form
EGED-320-1
VT 365 Electronic Control System
Diagnostic Form
CGE-575
Engine Diagnostic Trouble Codes
Technical Service Literature is revised periodically
and mailed automatically to “Revision Service”
subscribers. If a technical publication is ordered, the
latest revision will be supplied.
NOTE: The following order information is for technical
service literature only.
International Truck and Engine Corporation
Printing and Distribution Services
C/O Moore Wallace North America
1750 Wallace Avenue
St. Charles, IL 60174
Telephone: 630-313-7507
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SERVICE MANUAL
2
Service Diagnosis
•
Service diagnosis is an investigative procedure that
must be followed to find and correct an engine
application problem or an engine problem.
Knowledge of the principles of operation for
engine application and engine systems
•
Knowledge to understand and do procedures in
diagnostic and service publications
If the problem is engine application, see specific
vehicle manuals for further diagnostic information.
Technical Service Literature required for Effective
Diagnosis
If the problem is the engine, see specific Engine
Diagnostic Manual for further diagnostic information.
•
Engine Service Manual
•
Engine Diagnostic Manual
•
Diagnostics Forms
•
Electronic Control Systems Diagnostics Forms
•
Service Bulletins
Prerequisites for Effective Diagnosis
•
Availability
equipment
of
gauges
and
diagnostic
test
•
Availability of current information for engine
application and engine systems
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SERVICE MANUAL
Safety Information
This manual provides general and specific service
procedures essential for reliable engine operation and
your safety. Since many variations in procedures,
tools, and service parts are involved, advice for all
possible safety conditions and hazards cannot be
stated.
Read safety instructions before doing any service and
test procedures for the engine or vehicle. See related
application manuals for more information.
Disregard for Safety Instructions, Warnings, Cautions,
and Notes in this manual can lead to injury, death or
damage to the engine or vehicle.
•
Wear appropriate hearing protection.
•
Wear correct work clothing.
•
Do not wear rings, watches, or other jewelry.
•
Restrain long hair.
Fire prevention
•
Warning: A warning describes actions necessary to
prevent or eliminate conditions, hazards, and unsafe
practices that can cause personal injury or death.
Make sure charged fire extinguishers are in the
work area.
NOTE: Check the classification of each fire
extinguisher to ensure that the following fire types
can be extinguished.
1. Type A — Wood, paper, textiles, and rubbish
2. Type B — Flammable liquids
SAFETY TERMINOLOGY
Three terms are used to stress your safety and safe
operation of the engine: Warning, Caution, and Note
3
3. Type C — Electrical equipment
Batteries
Batteries produce highly flammable gas during and
after charging.
•
Caution: A caution describes actions necessary
to prevent or eliminate conditions that can cause
damage to the engine or vehicle.
Always disconnect the main negative battery
cable first.
•
Always connect the main negative battery cable
last.
Note: A note describes actions necessary for correct,
efficient engine operation.
•
Avoid leaning over batteries.
•
Protect your eyes.
SAFETY INSTRUCTIONS
•
Do not expose batteries to open flames or sparks.
Vehicle
•
Do not smoke in workplace.
•
Make sure the vehicle is in neutral, the parking
brake is set, and the wheels are blocked before
doing any work or diagnostic procedures on the
engine or vehicle.
Compressed air
•
Limit shop air pressure for blow gun to 207 kPa
(30 psi).
Work area
•
Use approved equipment.
•
Keep work area clean, dry, and organized.
•
Do not direct air at body or clothing.
•
Keep tools and parts off the floor.
•
Wear safety glasses or goggles.
•
Make sure the work area is ventilated and well lit.
•
Wear hearing protection.
•
Make sure a First Aid Kit is available.
•
Use shielding to protect others in the work area.
Safety equipment
Tools
•
Use correct lifting devices.
•
Make sure all tools are in good condition.
•
Use safety blocks and stands.
•
Make sure all standard electrical tools are
grounded.
Protective measures
•
Wear protective glasses and safety shoes.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SERVICE MANUAL
4
•
Check for frayed power cords before using power
tools.
Fluids under pressure
•
Use extreme caution when working on systems
under pressure.
•
Follow approved procedures only.
Fuel
•
Do not over fill the fuel tank. Over fill creates a fire
hazard.
•
Do not smoke in the work area.
•
Do not refuel the tank when the engine is running.
Removal of tools, parts, and equipment
•
Reinstall all safety guards, shields, and covers
after servicing the engine.
•
Make sure all tools, parts, and service equipment
are removed from the engine and vehicle after all
work is done.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
5
Table of Contents
Engine Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Engine Serial Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Emission Labels (2004 and 2005 Model Years). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Emission Label (2006) Model Year. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Engine Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Engine Component Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Engine Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Air Management System (AMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Charge Air Cooler (CAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Variable Geometry Turbocharger (VGT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Exhaust Gas Recirculation (EGR) System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Exhaust System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Fuel Management System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Fuel Injection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Injection Control Pressure (ICP) System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Fuel Injectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Fuel Supply System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Fuel Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Lubrication System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Cooling System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Electronic Control System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Electronic Control System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Injection Drive Module (IDM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Engine and Vehicle Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Glow Plug Control System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
6
ENGINE SYSTEMS
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
7
Engine Identification
Engine Serial Number
Figure 1
Engine serial number
The engine serial number is stamped on the
crankcase pad on the rear left side of the crankcase
below the cylinder head.
Figure 2 50 – State Exhaust Emissions Label
(example)
The engine serial number is also on an identification
sticker on the valve cover.
The 50 – State Exhaust Emissions Label includes the
following:
Engine serial number examples
•
Year the engine was certified to meet EPA
emission standards
•
Engine model code
•
Service applications
•
Advertised brake horsepower ratings
6.0HM2Y0000500
6.0HA2U0000508
Engine serial number codes
6.0 – Engine displacement
H – Diesel, turbocharged, Charge Air Cooled, and
electronically controlled
M2 – Truck
A2 – Service
U – USA
Y – USA Huntsville
7 digit suffix – Engine serial number sequence
Emission Labels (2004 and 2005 Model Years)
Two emission labels are on the right valve cover:
•
50 – State Exhaust Emissions Label
•
U.S. Federal Family Emission Limits Label
Figure 3 U.S. Federal Family Emission Limits
label (example)
The U.S. Federal Family Emission Limits Label
identifies the engine family and emission limits
established by the manufacturer and certified by the
EPA.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
8
Emission Label (2006) Model Year
One emission label is on the right valve cover.
The 50 – State Exhaust Emissions Label includes the
following:
•
Year the engine was certified to meet EPA
emission standards
•
Engine model code
•
Service applications
•
Advertised brake horsepower ratings
Engine accessories
The following engine accessories may
manufacturer’s labels or identification plates:
Figure 4 50 – State Exhaust Emissions Label
(example)
have
•
Air compressor (for brake or suspension system )
•
Air conditioning compressor
•
Alternator
•
Cooling fan clutch
•
Variable Geometry Turbocharger (VGT)
•
Power steering / fuel pump
•
Starter motor
Labels or identification plates include information
and specifications helpful to vehicle operators and
technicians.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
9
Engine Description
Table 1
Engine Features and Specifications
International® VT 365 engine features and specifications
Engine
Diesel, 4 cycle
Configuration
4 OHV/1 Cam-in-Crankcase-V8
Displacement
365 cu. in (6.0L)
Bore and stroke
95 mm x 105 mm (3.74 in x 4.134 in)
Compression ratio
18.0:1
Aspiration
VGT turbocharged and Charge Air Cooling (CAC)
Rated power @ rpm
Peak torque @ rpm
1
1
1
175 bhp @ 2600 rpm
460 lbf•ft @ 1400 rpm
Engine rotation, facing flywheel
Counterclockwise
Combustion system
Digital Direct Injection (DDI)
Total engine weight (auto with oil)
459 kg (1094 lb)
Cooling system capacity (engine only)
10.2 liters (10.8 qts)
Lube system capacity (including filter)
18 liters (19 qts)
Lube system capacity (dry)
21.8 liters (23 qts)
Firing order
1–2–7–3–4–5–6–8
Base rating shown. See Appendix A for other ratings.
Major features
Air Management System (AMS)
•
Variable Geometry Turbocharger (VGT)
•
Exhaust Gas Recirculation (EGR) system
•
Chassis mounted Charge Air Cooling (CAC)
Digital Direct fuel Injection (DDI)
Two piece crankcase
One piece cylinder head with four valves per cylinder
Dual timing
Rear gear train
Closed crankcase ventilation
Oil cooler
The firing order is 1-2-7-3-4-5-6-8. When viewing the
engine from the rear (flywheel end), the right side
cylinders are numbered 1, 3, 5, and 7. Number one
is the front position. The left side is numbered 2, 4, 6,
and 8.
A two piece crankcase has been specially designed
to withstand the loads of diesel operation. The lower
crankcase has integral main bearing caps. Coolant
and oil passages are cast and machined in the
crankcase and front cover housing.
The crankshaft has five main bearings with fore and
aft thrust controlled at the upper half of the number 4
main bearing. Two connecting rods are attached to
each crankshaft journal. The piston pin moves freely
inside the piston and rod. Piston pin retaining rings
secure the piston pin within the piston.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
10
ENGINE SYSTEMS
One piece aluminum alloy pistons are fitted with
one keystone cut compression ring, one rectangular
intermediate compression ring, and a two piece oil
control ring. The combustion bowl (in the piston
crown) reduces exhaust emissions.
The camshaft is supported by five insert bushings
pressed into the crankcase. Two cam lobes, cam
followers, push rods and valve bridges control four
valves per cylinder. The camshaft is gear driven
from the rear end of the crankshaft. A thrust flange
is located between the camshaft gear and the
crankcase. Camshaft thrust is controlled with the rear
surface of the number 5 cam journal and the cam
gear.
Hydraulic cam followers maintain zero valve lash
and minimize engine noise. This eliminates periodic
adjustment of valve lash. The hydraulic cam followers
have rollers which provide excellent cam lobe and
cam follower durability.
The lubrication system uses a crankshaft driven
gerotor pump mounted on the front cover. The oil
pressure regulator is built into the front cover and
is accessible from outside the engine. Lube oil is
routed through an oil cooler equipped with a pressure
controlled bypass valve. Lube oil moves through
passages in the crankcase to lubricate all internal
components and to supply the piston cooling tubes
and high pressure pump reservoir. The VGT and air
compressor use external oil lines.
The VGT is electronically controlled and hydraulically
actuated. The VGT provides boost control at low and
high speeds for improved throttle response.
An exhaust gas recirculation valve allows water
cooled exhaust gases to be fed into the inlet air
stream to reduce exhaust emissions.
A closed crankcase breather system recirculates
crankcase vapors back into the intake air system.
A chassis mounted Charge Air Cooler (CAC), an
air-to-air heat exchanger, increases the density of the
air charge.
Engine operation is controlled by two engine mounted
control modules:
•
Electronic Control Module (ECM)
•
Injector Drive Module (IDM)
The ECM receives signals from engine and chassis
mounted sensors.
The ECM controls engine
operation with the following actuators:
•
IPR
•
VGT control valve
•
EGR
•
Glow plug relay
The IDM controls fuel injector operation using data
from the ECM.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
11
Engine Component Locations
Figure 5
1.
2.
3.
4.
Engine components – Front
Manifold Absolute Pressure
(MAP) sensor
Lube oil pressure test port
Fuel filter assembly
Fuel return
5.
6.
7.
8.
Fuel supply
Engine Coolant Temperature
(ECT) sensor
Port for coolant deaeration tank
Coolant outlet and thermostat
9.
10.
11.
12.
Front cover assembly
Crankshaft vibration damper
Coolant inlet
Water pump pulley
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
12
Figure 6
1.
2.
3.
4.
Engine components – Left
Fuel filter drain lever
Engine Control Module (ECM)
Injector Driver Module (IDM)
Exhaust Back Pressure (EBP)
sensor
5.
6.
7.
8.
9.
Valve cover
Rear cover
Exhaust manifold
Camshaft Position (CMP) sensor
Glow plug harness
10. Engine Coolant Temperature
(ECT) sensor
11. Lube oil fill tube
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
Figure 7
1.
2.
3.
13
Engine components – Rear
Injection Pressure Regulator
(IPR valve)
Turbocharger exhaust outlet
Exhaust tube assembly, right
4.
5.
6.
Flywheel or flexplate assembly
Rear cover assembly
Reinforcement ring
7.
8.
Shielded exhaust tube assembly,
left
Lifting eye (3)
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
14
Figure 8
1.
2.
3.
4.
Engine components – Right
Valve cover
Glow plug relay
Injection Control Pressure (ICP)
sensor
Crankshaft Position (CKP)
sensor
5.
6.
7.
8.
9.
10.
Fuel return line
Fuel supply line
Fuel filter strainer
Fuel supply pump (transfer)
Power steering line
Power steering pump
11. Exhaust Manifold
12. Glow plug harness
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
Figure 9
1.
2.
3.
4.
5.
15
Engine components – Top
Fuel filter assembly
Oil filter housing
Exhaust Gas Recirculation
(EGR) valve
Intake manifold air inlet
Manifold Absolute Pressure
(MAP) sensor
6.
7.
8.
Intake manifold
Compressor outlet
Manifold Air Temperature (MAT)
sensor
9. ICP sensor
10. EGR cooler
11. VGT control valve
12.
13.
14.
15.
16.
Glow plug relay
VGT
High-pressure oil pump cover
Air inlet duct
Breather hose assembly with
pitot tube
17. Lube oil fill
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
16
Engine Systems
The primary engine systems are Air Management and
Fuel Management, which share some subsystems or
have a subsystem that contributes to their operation.
•
•
The Electronic Control System controls the Air
Management System and Fuel Management
System.
•
The ICP system uses lube oil for hydraulic fluid to
actuate the fuel injectors.
•
The Fuel Supply System pressurizes fuel for
transfer to the fuel injectors.
•
The Lube Oil System provides lubrication and
heat transfer to engine components.
The Coolant System provides heat transfer for
EGR gases and lubrication oil.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
17
Air Management System (AMS)
Figure 11
1.
2.
3.
4.
Air Management System (AMS)
Intake manifold
EGR cooler
Left cylinder head
Left exhaust manifold
5.
6.
7.
8.
Shielded tube exhaust assembly
VGT with mounting bracket
Air inlet duct
Right cylinder head
9. Right exhaust manifold
10. Exhaust tube assembly, right
EGES295-2
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ENGINE SYSTEMS
18
The Air Management system includes the
following:
•
Air filter assembly
•
Closed crankcase breather
•
Chassis mounted Charged Air Cooler (CAC)
•
Variable Geometry Turbocharger (VGT)
•
Intake manifold
•
Exhaust Gas Recirculation (EGR) system
•
Exhaust system
•
Catalytic converter– dependent on application
•
Catalyzed Diesel Particulate Filter (CDPF) –
dependent on application
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
Figure 12
Air flow diagram
Air flow
Air enters and flows through the air filter assembly and
mixes with air from crankcase ventilation. The VGT
compresses the air mixture before it enters the Charge
Air Cooler (CAC). Cooled compressed air flows from
the CAC into the air intake manifold that directs air to
the intake ports for each cylinder head.
After combustion, hot exhaust gas is forced through
the exhaust manifolds to the EGR cooler and VGT.
•
19
Some hot exhaust gas is cooled in the EGR cooler
and flows through the EGR control valve back
through the air intake manifold to mix with filtered
air. This reduces nitrogen oxide (NOx) emissions
and noise.
•
The rest of the hot exhaust gas expands and flows
to the VGT, spins the turbine wheel, and flows
from the VGT outlet to the engine exhaust pipe.
•
The VGT compressor wheel, on the same shaft
as the turbine wheel, compresses the mixture of
filtered air and air from crankcase ventilation.
The VGT responds directly to engine loads. During
heavy load, an increased flow of exhaust gases turns
the turbine wheel faster. This increased speed turns
the compressor impeller faster and supplies more air
or greater boost to the intake manifold. Conversely,
when engine load is light, the flow of exhaust gases
decreases and less air is pumped into the intake
manifold.
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
20
The VGT modifies more efficient exhaust flow
characteristics.
Charge Air Cooler (CAC)
Figure 13
1.
2.
3.
4.
The CAC cooler is mounted on top of the radiator.
Air from the VGT is pushed through a network of
heat exchanger tubes before entering the air intake
manifold. Outside air flowing over the tubes and
fins cools the charged air. Charged air is cooler and
denser than the uncooled air; cooler and denser
air improves the fuel-to-air ratio during combustion,
resulting in improved emission control and power
output.
Charge Air Cooler
Air outlet
Charge Air Cooler
Air inlet
Radiator
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
21
Variable Geometry Turbocharger (VGT)
Figure 14
1.
2.
VGT
Actuator
VGT control valve
3.
4.
Unison ring
Vanes
The key feature of the VGT is actuated vanes
in the turbine housing. The vanes modify flow
characteristics of exhaust gases through the turbine
housing. The benefit is the ability to control boost
pressure needed to accommodate various engine
speeds and load conditions. An additional benefit is
lower exhaust emissions.
VGT closed loop system
Figure 15
VGT closed loop system
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
22
The VGT is a closed loop system that uses the
Exhaust Back Pressure (EBP) sensor to provide
feedback to the ECM. The ECM uses the EBP sensor
to continuously monitor EBP and adjust the duty cycle
to the VGT to match engine requirements.
VGT control
links all the vanes. When the unison ring moves,
all vanes move to the same position. Unison ring
movement occurs when either side of the actuator
piston is pressurized by engine oil.
Exhaust gas flow can be regulated depending on
required exhaust back pressure for engine speed and
load.
Exhaust Gas Recirculation (EGR) System
The EGR system includes the following:
•
EGR drive module
•
EGR valve
•
EGR cooler
•
Air intake manifold
•
Exhaust tube assembly, right
The Exhaust Gas Recirculation (EGR) system
reduces Nitrogen Oxide (NOx) emissions.
NOX forms during a reaction between nitrogen and
oxygen at high temperature during combustion.
Combustion starts when fuel is injected into the
cylinder before or slightly after the piston reaches
top-dead-center.
EGR flow
Figure 16
VGT control
The solenoid receives a pulse width modulated signal
from the ECM that indicates the on / off time that the
control valve is energized. The control valve directs
lube oil flow to both sides of the piston in the actuator
housing. Directing oil to different sides of the piston
increases or decreases exhaust back pressure.
Some exhaust from the right exhaust tube assembly
flows into the EGR cooler. Exhaust from the EGR
cooler flows into a passage in the air intake manifold
that intersects with the EGR valve.
When EGR is commanded, the EGR control valve
opens allowing cooled exhaust gases to enter the
intake manifold to be mixed with filtered intake air
then recycled through the combustion process.
Actuated vanes are mounted around the inside
circumference of the turbine housing. A unison ring
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
23
EGR valve
Figure 18
EGR control
The EGR valve, installed in the top front of the air
intake manifold, has three major components: a two
head valve assembly, a DC motor, and an Integrated
Circuit (IC). The IC has three Hall effect position
sensors that monitor valve movement.
The EGR drive module, mounted on the EGR drive
module mounting bracket above the ECM/IDM
assembly, controls the DC motor.
Figure 17
1.
2.
3.
EGR valve
Actuator coil
Valve heads (2)
Common shaft
A DC motor, in EGR valve, moves and controls the
position of a two head valve assembly.
Figure 19
EGR closed loop operation
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
24
The EGR system is closed loop control, using EGR
position signals.
The EGR drive module receives the desired EGR
valve position from the ECM across the CAN 2
datalink to activate the EGR valve for exhaust gas
recirculation.
The EGR drive module provides
feedback to the ECM on the valve position, interprets
the ECM command, and sends the command using
three pulse width modulated signals to the DC motor.
Exhaust System
The exhaust system includes the following:
•
Exhaust valves
•
Exhaust manifolds
•
Turbocharger
•
Exhaust piping
•
Muffler and catalytic converter – dependent on
application
•
Catalyzed Diesel Particulate Filter (CDPF) – if
equipped.
The exhaust system removes exhaust gases from
the engine. Exhaust gases exit from exhaust ports,
through exhaust valves, and flow into the exhaust
manifolds. Expanding exhaust gases are directed
through the exhaust tubes. The right exhaust tube
directs some exhaust gases into the Exhaust Gas
Recirculation (EGR) cooler. Exhaust gases flowing
into the VGT drive the turbine wheel. Exhaust gases
exit the VGT and flow into the exhaust piping, through
the muffler and catalytic converter or CDPF, and out
the discharge pipe to the atmosphere.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
Fuel Management System
Fuel Injection
Figure 20
Fuel management system
The fuel management system includes the following:
•
Electronic control system
•
Injection Control Pressure (ICP) system
•
Lubrication system
•
Fuel injectors
•
Fuel supply system
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© 2006 International Truck and Engine Corporation
25
ENGINE SYSTEMS
26
Injection Control Pressure (ICP) System
Figure 21
1.
2.
3.
4.
5.
High-pressure oil system
High-pressure oil pump cover
fasteners (8)
Oil rail assembly (2)
High-pressure oil pump cover
Pump-to-cover seal ring
High-pressure oil pump cover
seal
6.
High-pressure oil pump
fasteners (3)
7. Case-to-head tube assembly (2)
8. High-pressure oil pump
assembly
9. Branch tube adapter bolt (2)
10. Branch tube assembly
High-pressure Oil Flow
A gear driven, high-pressure oil pump draws
oil through a screen in the oil reservoir for the
high-pressure oil pump. The oil reservoir, in the top
of the crankcase below the oil cooler, is kept full by
the engine lubrication system.
The IPR valve maintains the ICP pressure by dumping
excess oil back to the crankcase.
11.
12.
13.
14.
Snap to Connection (STC) fitting
Branch tube adapter
O-ring
IPR valve
High-pressure oil from the pump flows through a
branch tube assembly to each case-to-head tube
assembly to each high-pressure oil rail.
High-pressure oil in the oil rails enter the fuel injectors
through sealed ports in the top of the fuel injectors.
When the OPEN coil for each injector is energized, the
injector uses high-pressure oil to inject and atomize
fuel into the combustion chamber. The CLOSE coils
are energized to end injection. Exhaust oil exits
through two ports in the top of the injector and drains
back to the crankcase.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
27
ICP system operation
ICP Closed Loop System
The solenoid receives a pulse width modulated signal
from the ECM that indicates the on/off time the control
valve is energized. The pulse is modulated to control
ICP pressure in the range of 3 to 20 MPa (500 to 3,000
psi).
The IPR valve is mounted in the high-pressure
pump cover. The IPR valve maintains the desired
ICP by dumping excess oil out the bottom of the
high-pressure pump cover.
High-pressure oil is routed to the IPR valve and ICP
sensor through the discharge tube and passages in
the high-pressure pump cover.
Figure 22
ICP closed loop system
The ICP is a closed loop system that uses the ICP
sensor to provide feedback to the ECM. The ECM
uses the ICP sensor to continuously monitor ICP
and adjust the duty cycle to the IPR to match engine
requirements.
The ECM sets Diagnostic Trouble Codes (DTCs), if
the ICP electrical signal is out of range. DTCs are
also set if an ICP signal corresponds to an out of
range value for injection control pressure for a given
operating condition.
The ECM will ignore ICP signals that are out of range.
The IPR valve will operate from preprogrammed
default values. This is called an Open Loop Operation.
ICP control
Figure 23
As the demand for ICP increases, the ECM increases
the pulse width to the IPR solenoid. When ICP
demand decreases, the ECM decreases the (duty
cycle) to the solenoid, allowing oil to flow from the
drain orifice.
ICP control
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
28
Fuel Injectors
Fuel injector features
Two 48 volt 20 amp coils control a spool valve that
directs oil flow in and out of the injector. The injector
coils are turned on for approximately 800 (micro
second or millionth of a second). Each injector has
a single four pin connector that passes through the
rocker arm carrier
Injector coils and spool valve
An OPEN coil and a CLOSE coil on the injector move
the spool from side to side using magnetic force. The
spool has two positions:
•
When the spool valve is open oil flows into the
injector from the high pressure oil rail.
•
When the spool valve is closed oil drains back to
the crankcase.
Intensifier piston
When the spool valve is open, high pressure oil
enters the injector, pushing down the intensifier piston
and plunger. Since the intensifier piston is 7.1 times
greater in surface area than the plunger, the injection
pressure is also 7.1 times greater than ICP pressure
on the plunger.
Plunger and barrel
Figure 24
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Fuel Injector
CLOSE coil
Control valve body
Intensifier piston
Piston return spring
Plunger
Valve opening pressure spring
Needle
OPEN coil
Spool valve (control valve)
Casenut
Fuel strainer (3)
Nozzle assembly
Fuel pressure builds between the plunger and the
barrel. When the intensifier piston pushes the plunger
down, the plunger increases fuel pressure in the
barrel 7.1 times greater than ICP. The plunger has
tungsten carbide coating to reduce scuffing and poor
performance.
Injector needle
The injector needle opens inward, off its seat when
fuel pressure overcomes the Valve Opening Pressure
(VOP) - approximately 21 MPa (3100 psi). Fuel is
atomized at high pressure through the nozzle tip.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
29
Fuel injector operation
Main injection (Step 2)
The injection operation has three stages:
The pulse width controlled current to the OPEN coil
is shut off, but the spool valve remains open. High
pressure oil from high-pressure oil rail continues to
flow past the spool valve. The intensifier piston and
plunger continue to move and fuel pressure increases
in the barrel. When fuel pressure rises above the VOP
- about 21 MPa (3100 psi) - the needle lifts of its seat
and injection begins.
•
Fill stage
•
Main injection
•
End of main injection
Fill stage
During the fill stage both coils are de-energized and
the spool valve is closed. High pressure oil from the
high pressure oil rail is dead headed at the spool valve.
Low pressure fuel fills the port below the plunger. The
needle control spring holds the needle on its seat to
prevent fuel from entering the combustion chamber.
Main injection (Step 1)
A pulse width current energizes the OPEN coil.
Magnetic force moves the spool open. High-pressure
oil flows past the spool valve into the intensifier piston
chamber. Oil pressure overcomes the force of the
intensifier piston spring and the intensifier starts to
move. An increase in fuel pressure under the plunger
seats the fuel inlet check ball. Fuel pressure starts to
build once the plunger passes the fuel spill port of the
barrel. Force on the needle begins to build.
End of main injection (Step 1)
When the Injector Drive Module (IDM) determines
that the correct injector On Time has been reached
(meaning the correct amount of fuel has been
delivered), the IDM sends pulse width controlled
current to the CLOSE coil of the injector. The current
energizes the CLOSE coil and magnetic force closes
the spool valve. High pressure oil is dead headed
against the spool valve.
End of main injection (Step 2)
The pulse width controlled current to the CLOSE
coil is shut off, but the spool valve remains closed.
The intensifier piston and plunger return to their initial
position. Oil above the intensifier piston flows past the
spool valve through the exhaust ports. Fuel pressure
decreases until the needle control spring forces the
needle back onto its seat.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
30
Fuel Supply System
Figure 25
1.
2.
3.
4.
5.
6.
Fuel supply system
Fuel injector assembly (8)
Plug assembly, fuel rail (2)
Cylinder head (right)
Fuel supply line (right cylinder
head)
Fuel supply line (left cylinder
head)
Cylinder head (left)
7.
12 mm banjo bolt with check
valve (2)
8. Fuel filter housing assembly
9. Fuel filter regulator valve
assembly
10. Fuel and power steering pump
assembly (gear driven)
11. Fuel filter prestrainer
12. Fuel filter water drain tube
assembly
13. Fuel supply line
14. Fuel return line
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
Figure 26
31
Fuel system schematic
The fuel supply system includes the following:
Fuel Flow
•
Check valve banjo bolts
•
Fuel tank(s)
•
Fuel filter and housing
The fuel pump draws fuel from the fuel tank(s). Fuel
passes through an 80 micron strainer on the pump.
The fuel pump pressurizes and transfers fuel to the
base of the fuel filter housing.
•
Fuel supply lines
•
•
Fuel passages in cylinder heads
•
Fuel pressure regulator and fuel return lines
•
Fuel supply pump (transfer)
The fuel filter housing regulates fuel pressure
and relieves excessive pressure back to the fuel
tank(s) through a fuel line connected to the top of
the fuel filter housing. The fuel pressure regulator
is calibrated to open at 345 kPa (50 psi) but at
high rpm, low load pressure could reach more
than 517 kPa (75 psi).
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
32
ENGINE SYSTEMS
•
The fuel is conditioned as it passes through a 10
micron filter to a standpipe in the center of the fuel
filter housing.
•
A fuel drain valve on the housing is used to
eliminate contaminants (usually water) from the
fuel housing.
•
An optional electric heating element in the fuel
filter housing warms the fuel to prevent waxing.
•
Filtered fuel flows from the fuel filter housing to
both cylinder heads through fuel lines.
•
A sensor in the base of the fuel housing
detects water in the fuel. When enough water
accumulates in the bottom of the housing, the
sensor sends a signal to light the optional Water
In Fuel (WIF) lamp on the instrument panel.
Fuel flows past check valves through passages in the
cylinder heads that intersect with the fuel injectors.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
33
Lubrication System
Figure 27
1.
2.
3.
4.
5.
6.
Lubrication system
Oil cooler cover with filter base
VGT oil supply line
VGT
Push rod (16)
Valve lifter (16)
Main lube oil gallery (2)
7.
High-pressure oil pump
assembly
8. Camshaft gear
9. Piston cooling tube (8)
10. Main bearing insert (10)
11. Cylinder head (2)
12. Lower oil pan
13.
14.
15.
16.
17.
18.
19.
Oil pick up tube
Front cover housing
Gerotor assembly
Gerotor housing cover
Cam bushing (5)
Oil regulator valve
Upper oil pan
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
34
ENGINE SYSTEMS
Oil Flow
Figure 28
Lubrication system schematic
The lubrication system is pressure regulated, cooled,
and full flow filtered.
Oil is drawn from the oil pan through the pickup tube,
upper oil pan, lower crankcase, and the front cover to
the gerotor oil pump.
The gerotor pump pressurizes lube oil. Pressurized
lube oil flows from the front cover through a passage
in the lower crankcase. Lube oil from the lower
crankcase flows through a passage in the upper
crankcase to the oil cooler base. Passages in the oil
cooler base direct lube oil and coolant.
The gerotor oil pump includes the front cover
assembly, gerotor assembly (inner and outer gears),
and the gerotor housing cover. The crankshaft drives
the inner rotor gear of the gerotor pump.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
35
The oil filter base directs filtered oil in four ways:
•
One passage supplies filtered oil to the oil
temperature sensor, oil pressure sensor, oil
supply tube for the VGT, and oil supply for the air
compressor (optional).
Figure 30
Figure 29
1.
2.
3.
4.
Oil cooler base and oil filter base
VGT oil supply tube assembly
Oil filter housing
Oil filter base assembly
Oil cooler cover
Lube oil is routed from the front of the oil cooler cover
to the back where it enters the oil cooler. Lube oil is
cooled as it flows from the back of the oil cooler to the
front into the oil filter housing.
•
1.
2.
3.
4.
5.
6.
If the oil cooler is restricted, a bypass valve in the
oil filter base will open and allow oil to bypass the
oil cooler going directly to the oil filter housing.
Oil flows to the oil filter element. Oil passes through
the outside of the element to the inside of the element,
down the stand pipe, back into the oil filter base, and
into the oil cooler base.
•
Oil reservoir in crankcase
Oil feed to high pressure pump
Oil filter drain to pan
Oil feed to oil cooler cover
Oil feed to left side of main lube oil gallery
Oil feed to right side of main lube oil gallery
Coolant feed to oil cooler
A second passage supplies filtered oil to the
reservoir in the crankcase for the high pressure
pump and ICP system.
Two other passages supply filtered oil for the
following:
Left side
•
Main lube oil gallery
•
Push rod and rocker arms
•
Piston cooling tubes
Right Side
•
Main lube oil gallery
•
Push rod and rocker arms
•
Piston cooling tubes
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
36
•
Cam bushings
•
Crankshaft main bearings
•
Connecting rod bearings
When the oil filter is removed, oil flows from a drain
valve in the oil filter base back to the oil pan.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
37
Cooling System
Figure 31
1.
2.
3.
4.
5.
Engine cooling system components
Intake manifold
EGR cooler
Coolant outlet cap
Oil cooler cover
Oil cooler (not serviced
separately)
6.
7.
8.
9.
10.
Crankcase
Cylinder head
Front cover housing
Water pump
Thermostat assembly
11. Coolant deaeration fitting (to
deaeration tank)
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
38
The cooling system keeps the engine within a
designated temperature range.
The centrifugal water pump (hub and impeller) is
mounted in the pump housing of the front cover. The
water pump has a built in reservoir to catch small
amounts of coolant that may seep past the seal.
CAUTION: The water pump impeller may be
damaged if dropped or hit by a hard object.
Front cover housing flow
As the engine reaches operating temperatures, the
thermostat opens and directs coolant to the radiator.
This also restricts the bypass opening.
Crankcase and cylinder head flow
Coolant flows through passages in the front cover
to the left and right sides of the crankcase. Coolant
flows through the front of both sides of the crankcase,
evenly distributing coolant around the cylinders, and
exits the rear of the crankcase flowing up to the
cylinder heads.
The water pump draws coolant from the radiator
through inlet of the front cover housing. Coolant flows
from the water pump through three passages in the
front cover.
Coolant flows from the rear of the cylinder heads to
the front of the cylinder heads, exits down a passage
in the crankcase, and returns to the front cover.
•
Oil cooler and EGR cooler flow
•
Two passages (left and right) direct coolant into
the crankcase (front to rear) to cool the cylinder
walls and the cylinder heads.
The third passage directs coolant through a
passage in the crankcase to the oil cooler cover.
NOTE: If an oil cooler seal is damaged, weep holes in
the oil filter base allow coolant to seep from the cooler
cover.
The front cover directs coolant to a passage in the
crankcase. Coolant flows from the crankcase to the
front of the oil cooler cover. The oil cooler and the oil
filter base direct coolant to the front of the oil cooler.
Coolant flows through the oil cooler from the front to
rear and exits through the EGR cooler supply port.
Coolant returns to the water pump through three
passages in the front cover.
Coolant flows from the rear of the EGR cooler to the
front returning to the front cover though a passage in
the intake manifold.
•
Two passages (left and right) from the crankcase
direct coolant to the front cover.
•
The deaeration port is on top of the intake
manifold.
•
A third passage directs coolant from the intake
manifold to the front cover.
•
For engines equipped with an air compressor
the deaeration point is at the air compressor and
intake manifold.
Return coolant is directed to the thermostat in the front
cover.
•
If the thermostat is open, coolant flows to the
radiator.
•
If the thermostat is closed, coolant returns to the
water pump through a bypass passage in the front
cover, because the radiator outlet is blocked.
NOTE: Earlier engines have a single line from the
air compressor to the deaeration tank. Later engines
have two lines. One from the intake and one from the
air compressor that intersect one line to the deaeration
tank.
EGES295-2
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ENGINE SYSTEMS
39
Electronic Control System
Electronic Control System Components
Figure 32
Operation and function
The Electronic Control Module (ECM) monitors and
controls engine performance to ensure maximum
performance and adherence to emissions standards.
The ECM has four primary functions:
the 5 volt VREF signal sent to the sensors with their
respective returned signals, the ECM determines
pressures, positions, and other variables important to
engine and vehicle functions.
The ECM supplies two independent circuits for VREF:
•
Provides Reference Voltage (VREF)
•
VREF A supplies 5 volts to engine sensors
•
Conditions input signals
•
VREF B supplies 5 volts to vehicle sensors
•
Processes and stores control strategies
2. Signal conditioner
•
Controls actuators
1. Reference voltage (VREF)
The ECM supplies a 5 volt VREF signal to input sensors
in the electronic control system.
By comparing
The signal conditioner in the internal microprocessor
converts analog signals to digital signals, squares up
sine wave signals, or amplifies low intensity signals to
a level that the ECM microprocessor can process.
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ENGINE SYSTEMS
40
3. Microprocessor
The ECM microprocessor stores operating
instructions (control strategies) and value tables
(calibration parameters). The ECM compares stored
instructions and values with conditioned input values
to determine the correct operating strategy for all
engine operations.
Continuous calculations in the ECM occur at
two different levels or speeds: Foreground and
Background.
•
•
Foreground calculations are much faster than
background calculations and are normally more
critical for engine operation. Engine speed control
is an example.
Background calculations are normally variables
that change at a slower rates.
Engine
temperature is an example.
Diagnostic Trouble Codes (DTCs) are generated by
the microprocessor, if inputs or conditions do not
comply with expected values.
Diagnostic strategies are also programmed into the
ECM. Some strategies monitor inputs continuously
and command the necessary outputs to achieve the
correct performance of the engine.
power is interrupted. RAM information includes the
following:
•
Engine temperature
•
Engine rpm
•
Accelerator pedal position
4. Actuator control
The ECM controls the actuators by applying a low
level signal (low side driver) or a high level signal
(high side driver). When switched on, these drivers
complete a ground or power circuit to an actuator.
Actuators are controlled in three ways (determined by
the kind of actuator):
•
A duty cycle (percent time on/off)
•
A controlled pulse width
•
Switched on or off
ECM Control of Engine Operation
The ECM controls engine operation with the following:
•
VGT control valve
•
EGR valve
Microprocessor memory
•
IPR valve
The ECM microprocessor includes Read Only
Memory (ROM) and Random Access Memory (RAM).
•
Glow plug relay
VGT control valve
ROM
ROM stores permanent information for calibration
tables and operating strategies. Permanently stored
information cannot be changed or lost by turning
the ignition switch to OFF or when ECM power is
interrupted. ROM includes the following:
•
Vehicle configuration, modes of operation, and
options
•
Engine Family Rating Code (EFRC)
•
Engine warning and protection modes
The VGT control valve is an actuator mounted on
the top right side of the VGT. The VGT control valve,
a variable position valve, controls vane position in
the turbine housing. Vane position is controlled by
a switching voltage source in the ECM. The ground
circuit is supplied directly from battery ground at all
times.
Actuator control is achieved by setting a pulse width
modulated signal in response to engine speed,
desired fuel quantity, boost or exhaust back pressure
and altitude.
RAM
Exhaust Gas Recirculation (EGR) valve
RAM stores temporary information for current
conditions. Temporary information in RAM is lost
when the ignition switch is turned OFF or when ECM
The EGR valve controls the flow of exhaust gases into
the intake manifold.
The EGR drive module controls the DC motor in the
EGR valve.
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ENGINE SYSTEMS
The EGR drive module receives the desired EGR
valve position from the ECM across the CAN 2
datalink to activate the EGR valve for exhaust gas
recirculation.
The IDM has three functions:
The EGR drive module provides feedback to the ECM
on the valve position. When an EGR control error is
detected, the EGR drive module sends a message to
the ECM and a DTC is set.
Injection Pressure Regulator (IPR)
The IPR valve controls pressure in the Injection
Control Pressure (ICP) system. The IPR valve is a
variable position valve controlled by the ECM. This
regulated pressure actuates the fuel injectors. The
valve position is controlled by switching the ground
circuit in the ECM. The voltage source is supplied by
the ignition switch.
Glow plug relay
The ECM activates the glow plug relay. The relay
delivers VBAT to the glow plugs for up to 120 seconds,
depending on ambient temperature and altitude. The
ground circuit is supplied directly from the battery
ground at all times. The relay is controlled by
switching on a voltage source from the ECM.
Injection Drive Module (IDM)
•
Electronic distributor for injectors
•
Power source for injectors
•
IDM and injector diagnostics
41
Electronic distributor for injectors
The IDM distributes current to the injectors. The IDM
controls fueling to the engine by sending high voltage
pulses to the OPEN and CLOSE coils of the injector.
The IDM uses information from the ECM to determine
the timing and quantity of fuel for each injector.
The ECM uses CMP and CKP input signals to
calculate engine speed and position. The ECM
conditions both input signals and supplies the IDM
with CMP and CKP output signals. The IDM uses
CMP and CKP output signals to determine the correct
sequence for injector firing.
The ECM sends information (fuel volume, EOT, and
ICP) through the CAN 2 link to the IDM; the IDM uses
this information to calculate the injection cycle.
Injector Power Source
The IDM creates a constant 48 volt (DC) supply to
all injectors by making and breaking a 12 volt source
across a coil in the IDM. The 48 volts created by the
collapsed field is stored in capacitors until used by the
injectors.
The IDM controls when the injector is turned on and
how long the injector is active. The IDM first energizes
the OPEN coil, then the CLOSE coil. The low side
driver supplies a return circuit to the IDM for each
injector coil (open and close). The high side driver
controls the power supply to the injector. During each
injection event, the low and high side drivers are
switched on and off for each coil.
IDM and injector diagnostics
The IDM determines if an injector is drawing enough
current. The IDM sends a fault to the ECM, indicating
potential problems in the wiring harness or injector,
and the ECM will set a DTC. The IDM also does self
diagnostic checks and sets a DTC to indicate failure
of the IDM.
Figure 33
Injection Drive Module (IDM)
On demand tests can be done using the Electronic
Service Tool (EST). The EST sends a request to the
ECM, the ECM sends a request to the IDM to do a
EGES295-2
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© 2006 International Truck and Engine Corporation
ENGINE SYSTEMS
42
test. Some tests generate a DTC when a problem
exists. Other tests require the technician to evaluate
parameters, if a problem exists.
Engine and Vehicle Sensors
Figure 34
1.
2.
3.
4.
5.
6.
7.
Engine and Vehicle Sensors
Electronic Control Module
(ECM)
Engine Oil Temperature (EOT)
Engine Coolant Temperature
(ECT)
Manifold Air Temperature (MAT)
Intake Air Temperature (IAT)
Injection Control Pressure (ICP)
Exhaust Back Pressure (EBP)
8.
9.
10.
11.
12.
13.
Engine Oil Pressure (EOP)
Manifold Absolute Pressure
(MAP)
Camshaft Position (CMP)
Crankshaft Position (CKP)
Vehicle Speed Sensor (VSS)
Barometric Absolute Pressure
(BAP)
14. Driveline Disengagement Switch
(DDS)
15. Engine Coolant Level (ECL)
16. Exhaust Gas Recirculation
(EGR) drive module
17. Accelerator Position Sensor
(APS)
18. EGR valve
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ENGINE SYSTEMS
43
The ECT signal is monitored by the ECM for operation
of the instrument panel temperature gauge, coolant
temperature compensation, optional Engine Warning
Protection System (EWPS), glow plugs, and the wait
to start lamp. The ECM will use ECT sensor input as
a backup, if EOT sensor values are out of range.
The ECT sensor is installed in the left side of the front
cover.
Engine Oil Temperature (EOT)
The EOT sensor detects engine oil temperature.
•
ECT
The EOT signal is monitored by the ECM to control
EGR, VGT, and for engine fueling calculations
throughout the operating range of the engine. The
EOT signal allows the ECM and IDM to compensate
for differences in oil viscosity, due to temperature
changes.
•
EOT
The EOT sensor is installed in the oil filter base.
•
IAT
Intake Air Temperature (IAT)
•
MAT
Figure 35
Thermistor
Thermistors
A thermistor sensor changes electrical resistance as
temperature changes. Resistance in the thermistor
decreases as temperature increases, and increases
as temperature decreases. Thermistors work with a
resistor that limits current in the ECM to form a voltage
signal matched with a temperature value.
The top half of the voltage divider is the current limiting
resistor that is internal to the ECM. A thermistor sensor
has two electrical contacts: signal return and ground.
The output of a thermistor sensor is a non-linear
analog signal.
Engine Coolant Temperature (ECT)
The IAT signal is monitored by the ECM to control
timing and fuel rate during cold starts.
The IAT sensor is chassis mounted in the air filter
housing.
Manifold Air Temperature (MAT)
The MAT sensor
temperature.
detects
intake
manifold
air
The MAT signal is monitored by the ECM for EGR
operation.
The MAT sensor is installed in the right front of the
intake manifold.
The ECT sensor detects engine coolant temperature.
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ENGINE SYSTEMS
44
The BAP sensor provides information to the ECM
for control of fuel quantity, fuel timing, glow plug
operation, and adjustment of the VGT to compensate
for density changes.
The BAP sensor is mounted behind the instrument
panel.
Engine Oil Pressure (EOP)
The EOP sensor detects engine oil pressure.
Figure 36
Variable capacitance sensor
The EOP signal is monitored by the ECM for operation
of the instrument panel pressure gauge and optional
EWPS.
Variable capacitance sensors
The EOP sensor is installed in the oil filter base.
•
BAP
Exhaust Back Pressure (EBP)
•
EBP
•
EOP
The EBP sensor measures exhaust back pressure
before the turbocharger.
•
ICP
•
MAP
The EBP sensor provides feedback to the ECM for
closed loop control of the VGT and for EGR position
calculations.
Variable capacitance sensors measure pressure. The
pressure measured is applied to a ceramic material.
The pressure forces the ceramic material closer to a
thin metal disk. This action changes the capacitance
of the sensor.
The sensor is connected to the ECM by three wires:
•
VREF
•
Signal return
•
Signal ground
The sensor receives the VREF and returns an analog
signal voltage to the ECM. The ECM compares the
voltage with pre-programmed values to determine
pressure.
The operational range of a variable capacitance
sensor is linked to the thickness of the ceramic disk.
The thicker the ceramic disk the more pressure the
sensor can measure.
Barometric Absolute Pressure (BAP)
The EBP sensor is mounted on a bracket on the left
side of the engine below the ECM.
Injection Control Pressure (ICP)
The ICP sensor, a micro-strain gauge sensor,
measures injection control pressure.
The ICP signal is monitored by the ECM for closed
loop control of the IPR valve. The ICP signal is also
used by the IDM for engine fueling calculations.
The ICP sensor is installed in the right high-pressure
oil rail.
Manifold Absolute Pressure (MAP)
The MAP sensor detects intake manifold boost
pressure.
The MAP signal is monitored by the ECM for EGR
position and engine fueling calculations.
The MAP sensor is installed in the top front of the
intake manifold.
The BAP sensor detects altitude.
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ENGINE SYSTEMS
45
Camshaft Position (CMP)
The CMP sensor indicates camshaft speed and
position.
The CMP sensor sends a pulsed signal to the ECM
when a single peg on the camshaft rotates past
the CMP sensor once during each revolution of the
camshaft. The ECM calculates camshaft speed and
position from CMP signal frequency.
The CMP sensor is installed in the front left side of the
crankcase.
Vehicle Speed Sensor (VSS)
The VSS provides the ECM with transmission tail shaft
speed by sensing the rotation of a 16 tooth gear on
the rear of the transmission. The detected sine wave
signal (AC), received by the ECM, is used with tire size
and axle ratio to calculate vehicle speed.
The VSS is installed in left side of the transmission.
Figure 37
Magnetic pickups
Magnetic pickup sensors
•
CKP
•
CMP
•
VSS
A magnetic pickup sensor generates an alternating
frequency that indicates rotational speed. Magnetic
pickup sensors have a two wire connection for signal
and ground. The sensor has a permanent magnet
core surrounded by a wire coil. The signal frequency
is generated by the rotation of gear teeth that disturb
the magnetic field.
Crankshaft Position (CKP) sensor
The CKP sensor indicates crankshaft speed and
position.
The CKP sensor provides the ECM with a signal
that indicates crankshaft speed and position. As the
crankshaft turns the CKP sensor detects a 60 tooth
timing disk on the crankshaft. Teeth 59 and 60 are
missing. By comparing the CKP signal with the CMP
signal, the ECM calculates engine rpm and timing
requirements.
Figure 38
Potentiometer
Potentiometers
•
APS
The CKP is installed in the front right side of the lower
crankcase.
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ENGINE SYSTEMS
46
A potentiometer is a variable voltage divider that
senses the position of a mechanical component.
A reference voltage is applied to one end of the
potentiometer. Mechanical rotary or linear motion
moves the wiper along the resistance material,
changing voltage at each point along the resistive
material. Voltage is proportional to the amount of
mechanical movement.
Accelerator Position Sensor (APS)
The APS provides the ECM with a feedback signal
(linear analog voltage) that indicates the operator’s
demand for power. The APS is mounted in the
accelerator pedal. In the same application, a remote
accelerator or throttle device can be used in addition
to the accelerator pedal.
Switches
•
DDS
•
ECL
•
IVS
Switch sensors indicate position. They operate open
or closed, allowing or preventing the flow of current.
A switch sensor can be a voltage input switch or a
grounding switch. A voltage input switch supplies the
ECM with a voltage when it is closed. A grounding
switch grounds the circuit closed, causing a zero
voltage signal.
Grounding switches are usually
installed in series with a current limiting resistor.
Driveline Disengagement Switch (DDS)
The DDS determines if a vehicle is in gear. For
manual transmissions, the clutch switch serves as the
DDS. For automatic transmissions, the neutral switch
functions as the DDS.
Engine Coolant Level (ECL)
The ECL switch is used in plastic deaeration tanks.
When the magnetic switch is open, the tank is full.
The ECL lamp on the instrument panel signals the
operator if engine coolant is low. ECL is part of the
Engine Warning Protection System (EWPS)
Idle Validation Switch (IVS)
Figure 39
Switch
The IVS is a redundant switch that provides the ECM
with a signal that verifies when the APS is in the idle
position.
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ENGINE SYSTEMS
47
Glow Plug Control System
Figure 40
Glow plug control system
The glow plug control system warms the engine
cylinders to aid cold engine starting and reduce
exhaust emissions during warm-up.
The Electronic Control Module (ECM) is programmed
to energize the glow plugs (through the glow plug
relay), while monitoring programmed conditions
for engine coolant temperature and atmospheric
pressure.
The ECM monitors battery voltage and uses
information from the Barometric Absolute Pressure
(BAP) sensor and Engine Coolant Temperature (ECT)
sensor to determine the amount of time that the WAIT
TO START lamp is ON and the activation time of the
glow plugs. The ECM controls the WAIT TO START
lamp and the activation of the glow plugs separately.
The glow plugs are self limiting and do not require
cycling on and off. The glow plug relay will only cycle
on and off repeatedly if system voltage is greater than
14.0 volts.
Glow plugs are activated for a longer time, if the
engine is cold or the barometric pressure is low (high
altitude).
The engine is ready to start when the WAIT TO START
lamp is turned off by the ECM. The glow plugs can
remain on up to 120 seconds, while the engine is
running, to reduce exhaust emissions during engine
warm-up.
EGES295-2
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© 2006 International Truck and Engine Corporation
48
ENGINE SYSTEMS
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MOUNTING ENGINE ON STAND
49
Table of Contents
Mounting Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Special Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Special Service Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
50
MOUNTING ENGINE ON STAND
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MOUNTING ENGINE ON STAND
51
Mounting Engine
WARNING: To prevent personal injury or
death, make sure the engine has cooled before
removing components.
WARNING: To prevent personal injury or
death, do not let engine fluids stay on your skin.
Clean skin and nails using hand cleaner and wash
with soap and water. Wash or discard clothing
and rags contaminated with engine fluids.
NOTE: Engine fluids (oil, fuel and coolant) are a threat
to the environment. Recycle or dispose of engine
fluids according to local regulations. Never put engine
fluids in the trash, on the ground, in sewers or bodies
of water.
NOTE: Before mounting the engine on the engine
stand, do steps 1 through 5.
Figure 42
1.
2.
Right side coolant drain plug
Exhaust manifold
Coolant drain plug
1. Remove fuel and power steering lines from the
pump assembly.
2. Remove two coolant drain plugs and drain
coolant from crankcase into a suitable container.
The coolant drain plugs are in the rear of the
crankcase, below the exhaust manifolds.
3. Remove oil pan drain plug and drain oil into a
suitable container.
4. After fluids are drained from the engine, reinstall
plugs.
5. Torque oil pan drain plug to the special torque
(Table 2).
WARNING: To prevent personal injury or
death, attach the hoist hook lifting bracket to the
engine lifting eyes before lifting the engine.
Figure 41
1.
2.
Left side coolant drain plug
Exhaust manifold
Coolant drain plug
6. Attach hoist hook lifting bracket to the engine
lifting eyes. Use safety catches on the hoist
hooks when lifting engine.
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52
Figure 43
MOUNTING ENGINE ON STAND
Engine Stand Mounting Bracket
Figure 44 Mounting bolts for Engine Stand
Mounting Bracket
1.
2.
WARNING: To prevent personal injury or
death, use only grade 8 bolts to secure Engine
Stand Mounting Bracket to engine and engine lift
stand. Other grade bolts may shear, causing the
engine to fall off engine or engine lift stand.
NOTE: See manufacturer’s safety instructions
(included with engine lift stand and Engine Stand
Mounting Bracket).
Grade 8 mounting bolts (4) to engine block
Grade 8 mounting bolts (4) to engine lift stand
7. Position Engine Stand Mounting Bracket (Table 3)
on right side of engine. Secure bracket plate with
four grade 8 mounting bolts and washers.
8. Mount engine on engine lift stand using four grade
8 mounting bolts.
EGES295-2
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Follow all warnings, cautions, and notes.
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MOUNTING ENGINE ON STAND
53
Special Torque
Table 2
Oil Pan Drain Plug
Oil pan drain plug
25 ± 5 N·m (18 ± 4 lbf·ft)
Special Service Tools
Table 3
Mounting Engine on Stand
Description
TOOL NUMBER
Engine Stand Mounting Bracket
EGES295-2
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ZTSE4507
54
MOUNTING ENGINE ON STAND
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
55
Table of Contents
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
VGT Control Valve Removal (If required). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
VGT and Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Cleaning and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
VGT Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Related Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Check Free Rotation and Housing Rub. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Check Axial End Play. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Variable Geometry Turbocharger (VGT) and Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Control Valve (If previously removed). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Special Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Special Service Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
56
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
57
Description
Figure 45
1.
2.
3.
Turbocharger components
Air inlet
Exhaust outlet
Compressor outlet
4.
5.
6.
Exhaust inlet
Turbocharger control valve
Oil supply tube
Operation
The key feature of the VGT is actuated vanes
in the turbine housing. The vanes modify flow
characteristics of exhaust gases through the turbine
housing. The benefit is the ability to control boost
pressure needed for various engine speeds and load
conditions. An additional benefit is lower exhaust
emissions.
The VGT is a closed loop system that uses the
Exhaust Back Pressure (EBP) sensor to provide
feedback to the Electronic Control Module (ECM).
The ECM uses the EBP sensor to continuously
7.
Turbocharger mounting bracket
monitor EBP and adjust the duty cycle to the VGT to
match engine requirements.
The solenoid receives a pulse width modulated signal
from the ECM that indicates the on / off time that the
control valve is energized. The control valve directs
lube oil flow to both sides of the piston in the actuator
housing. Directing oil to different sides of the piston
increases or decreases exhaust back pressure.
Actuated vanes are mounted around the inside
circumference of the turbine housing. A unison ring
links all the vanes. When the unison ring moves,
all vanes move to the same position. Unison ring
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
58
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
movement occurs when either side of the actuator
piston is pressurized by engine oil.
Exhaust gas flow can be regulated depending on
required exhaust back pressure for engine speed and
load.
The VGT is an exhaust driven centrifugal air
compressor that uses signals from the ECM to control
intake manifold pressure. The VGT uses a set of
moveable vanes in the turbine housing to change the
flow of exhaust gases through the VGT. These vanes
can be positioned to change the angle or direction
of flow to the turbine wheel depending on engine
operating conditions. As power demands increase,
exhaust gas velocity increases in direct relation, as
does intake manifold boost pressure. Conversely, as
the flow of exhaust gas diminishes, intake manifold
boost pressure is also reduced at the same rate.
Vanes mounted around the internal circumference
of the turbine housing are connected to a unison
ring. When the unison ring moves, all vanes move
to the same position. The unison ring moves, when
either side of the actuator piston receives pressurized
engine oil, regulated by the control valve, part of
a Pulse Width Modulated (PWM) circuit regulated
by the ECM. An increase in duty cycle of the PWM
circuit routes oil through the control valve in a way
that will cause piston movement that increases
manifold pressure. Decreasing the pulse width will
direct oil such that the manifold pressure will be
decreased. The VGT control is a closed loop system
using the EBP sensor to provide feedback to the
ECM. The ECM provides a duty cycle in response to
engine speed, engine load, manifold pressure, and
barometric pressure in order to adjust the duty cycle
to match the requirements of the engine.
The VGT increases power output by supplying
compressed air to the engine.
The internal
components are oil and air cooled. Engine oil is
circulated through the housing, which acts as a
heat barrier between the “hot” turbine and the “cold”
compressor.
Sleeve Bearings are lubricated by
engine oil. Oil is pumped directly from the oil filter
base, circulates to the VGT housing, and returns
to the sump through an oil drain in the VGT center
housing.
Expanding exhaust gases drive the turbine shaft
assembly to speeds over 100,000 rpm. Filtered
air entering the compressor side of the VGT is
compressed and delivered through a charge air
cooler. Hot compressed air is cooled, filling the intake
manifold at a pressure higher than atmospheric
pressure. Because considerably more air is forced
into the intake manifold, the results are increased
power, fuel efficiency and the ability to maintain
power at higher altitudes.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
59
Removal
WARNING: To prevent personal injury or
death, read all safety instructions in the “Safety
Information” section of this manual.
WARNING: To prevent personal injury or
death, shift transmission to park or neutral, set
parking brake, and block wheels before doing
diagnostic or service procedures.
WARNING: To prevent personal injury or
death, make sure the engine has cooled before
removing components.
WARNING: To prevent personal injury or
possible death, disconnect the main battery
negative terminal before disconnecting or
connecting electrical components.
Figure 46
1.
2.
3.
4.
VGT
VGT
VGT
VGT
Disconnection of VGT control valve
control valve connection
control valve
control valve connector
control valve bracket
WARNING: To prevent personal injury or
death, do not let engine fluids stay on your skin.
Clean skin and nails, using a hand cleaner, and
wash with soap and water. Wash or discard
clothing and rags contaminated with engine
fluids.
1. Disconnect the engine harness electrical
connector from the VGT control valve.
NOTE: Engine fluids (oil, fuel and coolant) are a threat
to the environment. Recycle or dispose of engine
fluids according to local regulations. Never put engine
fluids in the trash, on the ground, in sewers or bodies
of water.
NOTE: The VGT control valve should only be
removed for cleaning and inspection, when
troubleshooting VGT problems.
VGT Control Valve Removal (If required)
Figure 47
1.
2.
Retaining bolt for VGT control valve
VGT control valve bracket
Retaining bolt
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
60
1. Remove the retaining bolt and control valve
bracket for VGT control valve.
Figure 48
1. Remove oil fill extension tube and put a cap in the
oil fill hole of the valve cover to keep out foreign
material.
VGT control valve
2. Remove VGT control valve from turbocharger
center housing.
VGT and Components
Figure 50
1.
2.
3.
Air inlet duct
Turbo air inlet
Air inlet duct
Air inlet duct clamp
2. Loosen the air inlet duct clamp.
3. Remove air inlet duct and clamp. Put a cap over
the opening of the VGT air inlet, to keep out
foreign material.
Figure 49
1.
2.
3.
Air inlet duct
Lube oil fill extension tube
Air inlet duct
Air inlet duct clamp
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
Figure 52
1.
2.
Figure 51
1.
2.
3.
Breather tube and pitot tube
Air inlet duct
Breather hose
Pitot tube
61
Oil supply tube to VGT
Oil supply tube
Mounting bolt (2)
6. Remove two M8 x 20 bolts from the oil supply tube
mounted on top of the VGT and swing oil supply
tube out of the way.
7. Remove oil supply tube gasket and discard.
8. Put a cap over oil supply inlet to the VGT, to keep
out foreign material.
4. Remove air inlet duct breather hose by turning
breather hose and pitot tube enough to align hold
clips with opening, to remove from the crankcase
breather cover.
5. Put caps in the opening of the breather cover vent
hole, to keep out foreign material.
Figure 53 Oil supply tube for VGT to oil cooler
cover assembly
1.
2.
Oil supply tube
Mounting bolt
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
62
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
9. Disconnect oil supply tube from engine by
removing the M8 x 20 flange head bolt.
10. Remove oil supply tube from oil cooler cover
assembly.
13. Remove M8 x 30 flange head bolt and spacer
securing the VGT to the center of mounting
bracket.
Figure 56
Figure 54
Rear mounting bolt for VGT
Exhaust adapter V-clamp for VGT
14. Remove M8 x 30 flange head bolt securing the
VGT to the rear of mounting bracket.
11. Remove exhaust adapter V-clamp.
12. Cover all openings to the VGT when piping is
removed, to keep out foreign material.
Figure 57
VGT
Figure 55
VGT
Front mounting bolt and spacer for
Center mounting bolt and spacer for
15. Remove one M8 x 30 flange head bolt and spacer
securing the VGT to the front of mounting bracket.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
63
NOTE: If removing the VGT only, cap off oil drain line
to keep out foreign material.
17. Pull oil drain tube out of high-pressure oil pump
cover.
16. Lift the VGT assembly up and off the engine.
Make sure all openings in the VGT assembly are
capped.
18. Put a cap over opening in the high-pressure oil
pump cover to keep out foreign material.
NOTE: Use Compressor Inlet Cap and Exhaust Outlet
Cap. (Table 6). If plastic caps are not available, cover
openings with tape.
Figure 58
19. Remove two O-rings on the oil drain tube and
discard.
Figure 60
VGT bracket bolts
Figure 61
Removal of VGT bracket bolts
Oil drain tube for VGT
20. Remove four M8 x 20 VGT bracket bolts.
Figure 59
Removal of oil drain tube for VGT
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
64
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
21. Lift up the left side of the bracket first so the right
side can clear the EGR cooler coolant inlet tube.
Figure 62
VGT mounting bracket
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
Cleaning and Inspection
65
1. Inspect the compressor impeller and turbine
wheel for blade erosion, bending, breakage or
deposits. Replace VGT if damaged.
VGT Assembly
WARNING: To prevent personal injury or
death, wear safety glasses with side shields to
protect eyes. Limit compressed air pressure to
207 kPa (30 psi).
NOTE: Compressor impeller and turbine wheel
deposits can be caused by the following:
•
High air inlet restriction allows oil to transfer from
the VGT center housing, resulting in oil deposits.
NOTE: Do not use a caustic solution on the VGT and
related components.
•
Excessive oil consumption can result in turbine
wheel carbon deposits.
Clean the VGT assembly and bracket with a suitable
solvent and nylon brush. Dry with filtered compressed
air.
•
Engine over fueling can cause excessive
operating temperatures, which can melt aluminum
parts. Deposits on the turbine wheel indicate
failure.
Related Components
•
Oil from crankcase breather (mounted on top of
the left valve cover). Oil from the breather is
normal for this engine.
1. Rinse out inside of oil supply tube, if removed from
the oil filter base.
2. Clean VGT mounting bracket, exhaust piping, and
oil drain pipe.
Inspection
NOTE: Replace VGT if blades are bent.
straighten bent wheel blades.
2. Inspect the turbine and compressor housings for
wheel rubbing. Replace the VGT if wheels rub.
3. Inspect oil drain and supply lines for kinking,
clogging, restrictions, and deterioration. Discard
both sets of O-rings.
Do not
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
66
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
Check Free Rotation and Housing Rub
go. Put tip of dial indicator (Table 6) on end of
the compressor side of the shaft and zero the
indicator.
1. Put VGT on a bench with the shaft in a horizontal
position.
Figure 64
Figure 63
Free rotation of VGT shaft
2. Turn VGT shaft by hand; the shaft must spin
freely. Contact with the turbine and compressor
housings is not acceptable.
1.
2.
Axial end play
Dial indicator with magnetic base
Compressor housing
2. Move shaft back toward the dial indicator.
3. If measurement exceeds specifications, (Table 4)
replace VGT.
Check Axial End Play
1. With VGT in a stable position, push the impeller
shaft toward the turbine housing as far as it will
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
67
Installation
Variable Geometry Turbocharger (VGT) and
Components
Figure 67 Lubrication for O-rings on oil drain
tube for VGT
Figure 65
VGT bracket
1. Place VGT bracket in engine valley by putting right
side of bracket under EGR cooler coolant inlet
tube. Then lower left side over bolt holes.
Figure 66
3. Install two new oil drain tube O-rings and lubricate
both O-rings with clean engine oil.
4. Remove cap and install drain tube in the
high-pressure oil pump cover.
NOTE: If not immediately installing the VGT, install a
cover over the oil drain tube.
VGT bracket bolts
2. Install four M8 x 20 mounting bolts to secure
VGT bracket to crankcase. Tighten bolts to the
standard torque (Standard Torques, page 375).
Figure 68
1.
2.
VGT alignment dowels and bosses
Alignment dowel
Alignment boss
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
68
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
5. Use alignment dowels to position VGT on bosses
of forward and middle mounting brackets.
6. Remove the oil drain tube cap (if it was installed)
and lower VGT on mounting brackets and on oil
drain tube.
7. Coat bolt threads for three M8 x 30 flange head
bolts with anti-seize compound and secure VGT
to mounting bracket.
8. Tighten bolts to the special torque (Table 5).
Figure 70 Oil supply tube for VGT to oil cooler
cover assembly
1.
2.
Oil supply tube
Mounting bolt
12. Install VGT oil supply tube in oil supply line port in
the oil cooler cover assembly.
Figure 69
Exhaust adapter V-clamp for VGT
13. Install and tighten the M8 x 20 flange head bolt.
Torque the oil supply tube bolt to the standard
torque (Standard Torques, page 375).
9. Remove the exhaust outlet cover, install exhaust
piping, and tighten VGT exhaust adapter V-clamp
to the special torque (Table 5).
10. Remove cover on oil supply port on the oil cooler
cover assembly.
11. Install and lubricate a new O-ring on oil supply
tube.
Figure 71
Prelubrication of VGT bearings
CAUTION: To prevent engine damage, prelubricate
VGT bearings when installing the VGT.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
69
14. Prelubricate the oil inlet hole of the VGT with clean
engine oil and spin compressor wheel several
times to coat bearings with oil. Refill the oil inlet
hole up to oil supply tube mounting surface.
Figure 72
1.
2.
Oil supply tube for VGT
Oil supply tube
Mounting bolt (2)
15. Position oil supply tube over a new gasket and
secure with two M8 x 20 bolts.
Figure 73 Breather tube with pitot tube in
crankcase breather
17. Remove cap and press pitot tube in the crankcase
breather until it locks in place.
16. Tighten to the standard torque (Standard Torques,
page 375). Alternate tightening between both
bolts until the correct torque is reached.
Figure 74
1.
2.
Air inlet duct to VGT
VGT
Air inlet duct
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
70
18. Remove cap and align the arrow on the inlet duct
with the mark on the inlet housing opening on VGT
and press on the VGT.
1. During reassembly, lubricate new O-rings with
clean engine oil. Make sure O-rings are seated
correctly – not twisted or distorted.
19. Secure air inlet duct to VGT by tightening hose
clamp to the special torque (Table 5).
Figure 77
Figure 75
1.
2.
3.
Air inlet duct
Lube oil fill extension tube
Breather hose
Air inlet duct
VGT control valve
2. Install control valve carefully to avoid twisting or
cutting O-rings.
NOTE: Do not use the retaining bolt to draw the control
valve into the housing. Push the VGT control valve in
by hand to seat securely before installing bracket and
bolt.
20. Remove cap from the valve cover and thread the
oil fill extension tube in the valve cover and torque
to the special torque (Table 5).
Control Valve (If previously removed)
Figure 78
1.
2.
Figure 76
Retaining bolt for VGT Control valve
VGT control valve bracket
Retaining bolt
O-ring lubrication
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
3. Install control valve bracket and retaining bolt and
tighten bolt to standard torque (Standard Torques,
page 375).
71
WARNING: To prevent personal injury or
death, disconnect the main battery negative
terminal before disconnecting or connecting
electrical components.
1. Connect the VGT control valve to the electrical
harness.
2. Reinstall all safety guards, shields, and covers.
3. Make sure all tools, cleanliness covers, loose
parts, and service equipment are removed from
the engine work area.
Figure 79
1.
2.
3.
4.
VGT
VGT
VGT
VGT
VGT control valve
control valve connection
control valve
control valve connector
control valve bracket
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ELECTRONICALLY CONTROLLED VARIABLE GEOMETRY
TURBOCHARGER (VGT)
72
Specifications
Table 4
Variable Geometry Turbocharger (VGT) Shaft
Maximum turbine shaft axial end play
Maximum turbine shaft radial shaft movement (play)
0.091 mm (0.0036 in)
0.5 mm (0.02 in)
Special Torque
Table 5
VGT Bolts and Clamps
Air inlet duct hose clamp
4 to 5 N·m (36 to 48 lbf·in)
Oil fill extension tube
14 ± 1 N·m (124 ± 9 lbf·in)
VGT to mounting bracket bolts
31 ± 4 N·m (23 ± 3 lbf·ft)
VGT exhaust adapter V-clamp
12 N·m (108 lbf·in)
Special Service Tools
Table 6
Turbocharger
Description
Tool Number
Cap Kit (All)
ZTSE4610
Dial Indicator with Magnetic Base
Obtain locally
Intake Guard
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
ZTSE4548
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
73
Table of Contents
Component Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Intake Manifold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Exhaust Gas Recirculation Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Exhaust Manifolds and Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Left Exhaust Manifold and Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Right Exhaust Manifold and Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Exhaust Gas Recirculation (EGR) Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Intake Manifold and EGR Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Exhaust Gas Recirculation (EGR) Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Cleaning, Inspection, and Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Intake and Exhaust Manifolds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Exhaust Gas Recirculation (EGR) Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Manifold Warp Test for Right and Left Exhaust Manifold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Intake Manifold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Exhaust Gas Recirculation (EGR) Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Exhaust Gas Recirculation (EGR) Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Intake Manifold and EGR Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Exhaust Manifolds and Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Right Exhaust Manifold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Left Exhaust Manifold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Exhaust Gas Recirculation (EGR) Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Special Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Special Service Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
74
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Component Exploded Views
Intake Manifold
Figure 80
1.
Intake manifold and gaskets
Intake manifold
2.
Intake manifold gasket (2)
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
75
76
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Exhaust Gas Recirculation Components
Figure 81 Exhaust Gas Recirculation
Components (EGR)
1.
2.
3.
4.
Intake manifold assembly
EGR cooler
Exhaust tube assembly (right side)
Shielded tube exhaust assembly (left side)
Figure 82
1.
2.
Exhaust manifolds
Exhaust manifold (right)
Exhaust manifold (left)
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
77
Removal
Exhaust Manifolds and Tubing
Left Exhaust Manifold and Tubing
WARNING: To prevent personal injury or
death, read all safety instructions in the “Safety
Information” section of this manual.
WARNING: To prevent personal injury or
death, shift transmission to park or neutral, set
parking brake, and block wheels before doing
diagnostic or service procedures.
WARNING: To prevent personal injury or
death, make sure that the engine has cooled
before removing components.
NOTE: Engine fluids (oil, fuel and coolant) are a threat
to the environment. Recycle or dispose of engine
fluids according to local regulations. Never put engine
fluids in the trash, pour fluids on the ground, in sewers
or bodies of water.
Figure 84
Exhaust tube bolts (upper right)
2. Remove two M8 x 30 bolts securing the shielded
tube exhaust assembly. Discard exhaust tube
gasket.
WARNING: To prevent personal injury or
death, do not let engine fluids stay on your skin.
Clean skin and nails, using a hand cleaner, and
wash with soap and water. Wash or discard
clothing and rags contaminated with engine
fluids.
Figure 83 Manifold mounting bolts for shielded
tube exhaust assembly
1. Remove two M8 x 60 bolts securing the shielded
tube exhaust assembly on left exhaust manifold.
NOTE: Install caps (Table 9) to cover all openings. If
plastic caps are not available, cover with tape.
Figure 85
Tube fitting for EBP sensor
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
78
3. Remove tube fitting for EBP sensor and pull tube
from exhaust manifold.
Figure 88 Mounting bolts and spacers for right
exhaust manifold
Figure 86 Mounting bolts and spacers for left
exhaust manifold
1.
2.
1.
2.
Exhaust manifold
Prevailing torque bolt and spacer (8)
Exhaust manifold
Exhaust manifold mounting bolt and spacer (8)
2. Remove eight M8 x 40 prevailing torque bolts and
remove manifold.
4. Remove eight M8 x 40 exhaust manifold bolts and
remove manifold.
5. Remove and discard manifold gasket.
3. Remove and discard manifold gasket.
Exhaust Gas Recirculation (EGR) Valve
Right Exhaust Manifold and Tubing
Figure 87
Right exhaust tube assembly
1. Remove two M8 x 60 bolts connecting the right
exhaust tube assembly to the right exhaust
manifold.
Figure 89 EGR valve and 8-pin electrical
connector
1.
2.
EGR valve
8-pin electrical connector
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
1. Disconnect 8-pin electrical connector from EGR
valve.
Figure 90
EGR valve retaining bolts
Figure 92
1.
2.
3.
EGR Valve Puller
Screw
J arm with tab
Puller legs
4. Install the EGR valve puller (Table 9).
Figure 91
EGR valve retaining bolts
2. Remove two M6 x 35 EGR valve retaining bolts.
3. Turn the EGR valve counterclockwise.
Figure 93
EGR valve puller installed
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
79
80
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
5. Slip the pin of each J-arm under and in the bolt
hole of the EGR mounting flange and hook the top
end in the puller beam.
6. Position the puller legs over the EGR bolt holes in
the intake manifold.
Intake Manifold and EGR Cooler
NOTE: Before removing intake manifold, remove the
following components:
•
Fuel Filter Housing and Lines
•
VGT
See “Fuel System” and “Electronically Controlled
VGT” sections for removal procedures.
WARNING: To prevent personal injury or
death, wear safety glasses with side shields to
protect eyes. Limit compressed air pressure to
207 kPa (30 psi).
CAUTION: To prevent engine damage, blow out or
vacuum dirt and debris under the intake manifold. This
prevents dirt and debris from entering intake ports
when the manifold is removed.
Figure 94
EGR valve removed
7. Turn threaded shaft clockwise to remove EGR
valve.
CAUTION: To prevent engine damage, after removing
the EGR valve, vacuum loose carbon deposits and
debris from inside the intake manifold.
Figure 95 Intake heat shield mounting nuts
(right side)
8. Remove and discard three O-rings.
1. Remove two M6 intake heat shield nuts on the
right side of the intake manifold.
2. Remove heat shield.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Figure 96
1.
2.
81
Dog point bolts stud bolts
Bolt (M6 x 95 dog point) (11)
Bolt (M6 x 95) stud (5)
3. Remove 11 dog point bolts and 5 stud bolts.
Figure 97
1.
2.
3.
4.
EGR coolant inlet coupling
Index feature on coolant supply port cover
Recess
Single index mark
Flat edge representing duel index marks
4. Align single index mark (if visible) or one of the
recesses on the end of the EGR inlet coolant
coupling (Figure 97) with index feature located on
coolant supply port cover.
This aligns the detentes inside the coupling with
the raised slide-off area of the coolant supply port.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
82
7. Remove V-clamp from EGR cooler.
Figure 98 EGR coolant inlet coupling removal
from coolant supply port
1.
2.
3.
Index feature on EGR coolant supply cover
Coolant supply port
EGR coolant inlet coupling
Figure 100
Intake manifold and EGR cooler
5. Slide the coupling off the port.
6. Slide EGR coolant inlet coupling toward rear of
engine, away from coolant supply port.
8. Lift intake manifold assembly straight up to
remove.
9. Remove and save steel gasket for EGR cooler.
NOTE: The EGR cooler will be bolted to the intake
manifold.
10. Put protective magnetic covers over intake ports
in cylinder head (Table 9).
Figure 99
V-clamp on EGR Cooler
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Exhaust Gas Recirculation (EGR) Cooler
Figure 101
1.
2.
EGR cooler retaining bolts
Bolt (M6 x 20) stud (2)
Bolt (M6 x 16)
1. Put intake manifold on workbench.
2. Remove two M6 x 20 stud bolts and one M8 x
16 bolt securing the EGR cooler to the intake
manifold.
Figure 102
1.
2.
EGR cooler assembly
EGR cooler to intake manifold gasket
EGR cooler O-ring
3. Remove cooler assembly and discard gasket.
4. Remove O-ring.
5. Remove and save boss grommets.
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
83
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
84
Cleaning, Inspection, and Testing
Intake and Exhaust Manifolds
Intake and exhaust manifolds are one piece castings
and may be cleaned with steam or suitable noncaustic
solvents.
Clean contact areas of EGR O-ring in the intake
manifold, using Injector Sleeve Brush (Table 9). Make
sure carbon above and below contact areas can be
vacuumed from the intake manifold. Vacuum loose
carbon debris.
Exhaust Gas Recirculation (EGR) Valve
Check the pintle shaft and frame for misalignment.
Remove both O-rings and large O-ring (if not
removed) and discard. For electrical inspections,
see Engine Diagnostic Manual EGES-240.
Manifold Warp Test for Right and Left Exhaust
Manifold
1. Use a straightedge and feeler gauge to check
seating surface flatness for right and left exhaust
manifolds.
2. Check for flatness – across left and right and
diagonally. See “Intake and Exhaust manifolds”
(Table 7).
3. If specifications are not met, replace right or left
exhaust manifold.
Intake Manifold
Figure 104
manifold
Test plates installed on intake
1. Install Intake Manifold Pressure Plates (Table 9) .
Figure 103
1.
2.
3.
EGR valve assembly
Large O-ring
Valve group O-rings (2)
Common pintle shaft
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
85
Exhaust Gas Recirculation (EGR) Cooler
Figure 105
test
1.
2.
3.
4.
Set up for intake manifold pressure
Test plate
Intake Manifold Pressure Test Plug
Intake Manifold Pressure Test Cap
Air supply pressure regulator
2. Install Intake Manifold Pressure Test Plug (Table
9) in EGR orifice.
Figure 106
installed
1.
2.
3.
EGR cooler with pressure test plates
Air pressure regulator assembly
EGR cooler test plates
Cooler assembly
3. Install Intake Manifold Pressure Test Cap(Table 9)
on air intake.
1. Install EGR cooler test plates (Table 9) to each
end of the EGR cooler assembly.
WARNING: To prevent personal injury or
death, wear safety glasses with side shields to
protect eyes. Limit compressed air pressure to
207 kPa (30 psi).
WARNING: To prevent personal injury or
death, wear safety glasses with side shields.
Limit compressed air pressure to 207 kPa (30 psi).
4. Submerge intake manifold assembly in water.
5. Use a regulated filtered air supply and pressurize
to 172 to 207 kPa (25 to 30 psi). Inspect for leaks
in the intake plenum, EGR, and coolant passages.
Replace intake manifold, if necessary.
6. Inspect intake manifold gasket seal beads for
defects. Replace gasket, if necessary.
2. Attach an air pressure regulator to the EGR
cooler. Connect to shop air supply and adjust air
pressure to approximately 172 to 207 kPa (25 to
30 psi).
3. Completely submerge EGR cooler in sink or large
container of water. Inspect for air bubbles coming
from coolant passages.
4. Reinstall EGR cooler assembly, if leaks are not
detected. If leaks are detected, install new cooler
assembly.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
86
Installation
Exhaust Gas Recirculation (EGR) Cooler
1. Place new O-ring on the EGR cooler to manifold
seal tube and lubricate O-ring with clean engine
oil before assembly.
Figure 109 Bosses between EGR cooler and
intake manifold
1.
2.
Figure 107
manifold
1.
2.
3.
1.
2.
EGR cooler connection to intake
Stud bolt (M6 x 20) (2)
EGR cooler to manifold gasket
EGR cooler
Figure 108
Boss grommet
Intake manifold bolt tab grommet
EGR cooler retaining bolts
Bolt (M6 x 20) stud (2)
Bolt (M6 x 16)
3. Set a grommet on the EGR cooler boss, align the
intake manifold bolt tab over the grommet, and set
a grommet in the bolt tab cavity.
Figure 110
EGR rear mount bolt
4. Insert and hand tighten one M8 x 15 hex washer
bolt.
2. Install a new EGR cooler gasket and connect the
EGR cooler to the intake manifold. Install and
hand tighten two M6 x 20 stud bolts.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Figure 111
EGR cooler retaining bolts
5. Tighten all three fasteners to the standard torque
(Standard Torques, page 375).
Intake Manifold and EGR Cooler
Figure 112
87
Figure 113 Intake manifold gasket with
centering tab
2. Position a new intake manifold gasket on each
side of intake manifold and run two bolts through
each side to hold gaskets. Make sure centering
tabs are facing up in the manifold, while positioned
inboard toward the engine valley.
3. Remove protective magnetic covers (Table 9)
from cylinder head intake ports.
Front module seal
1. Install a new front module seal between the intake
manifold and front cover module.
Figure 114
assembly
Intake manifold and EGR cooler
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
88
4. Position intake manifold on cylinder heads.
Figure 115
1.
2.
5. Loosely install 11 dog point bolts and 5 stud bolts.
Dog point bolts and stud bolts
Bolt (M6 x 95 dog point) (11)
Bolt (M6 x 95) stud (5)
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Figure 116
Torque sequence for intake manifold mounting bolts
EGES295-2
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Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
89
90
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
6. Torque dog point bolts and stud bolts to the special
torque value (Table 8) (Figure 116).
Figure 118 EGR coolant inlet coupling alignment
(unlocked position)
Figure 117
side)
Heat shield mounting nuts (right
7. If equipped, install intake heat shield and two M6
nuts on right side of intake manifold and tighten to
the special torque (Table 8).
1.
2.
3.
4.
EGR coolant supply port cover mark
Recess
Single index mark
Flat edge representing duel index marks
8. Connect the EGR coolant inlet coupling by
aligning the single index mark (if visible) or
recess on the end of the coupling with index
feature on the oil cooler cover (Figure 118).
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Figure 120
spacer
Figure 119 EGR coolant inlet coupling to
coolant supply port
1.
2.
3.
Index feature on oil cooler cover
Coolant supply port
EGR coolant inlet coupling
1.
91
Right exhaust manifold bolt and
Anti-seize compound
1. Apply anti-seize compound to all bolt threads.
9. Slide EGR coolant inlet coupling toward the front
of the engine on coolant supply port up to the face
of the oil cooler cover.
10. To lock, rotate the coupling either way until single
index mark (if visible) or recess no longer aligns
with index feature on oil cooler cover.
11. Attempt to slide EGR coolant inlet coupling off
coolant supply port to verify locked position.
Exhaust Manifolds and Tubing
Right Exhaust Manifold
NOTE: When installing exhaust manifolds, only
use prevailing torque hex flange bolts having an
interference thread.
Figure 121 Torque sequence for exhaust
manifold mounting bolts
1.
2.
Right exhaust manifold
Left exhaust manifold
2. Position exhaust manifold gasket.
3. Install right exhaust manifold, using eight M8 x 40
prevailing torque hex flange bolts and spacers.
Start with the second bolt from the rear on top.
The hole diameter is smaller, to allow alignment
of the remaining bolts.
4. Tighten bolts to the special torque (Table 8) and
in the specified sequence (Figure 121).
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
92
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
Left Exhaust Manifold
Figure 122
Mounting bolts for right exhaust tube
5. Apply anti-seize compound to two M8 x 60 bolts
securing the right exhaust tube assembly to the
exhaust manifold flange with two prevailing torque
nuts. Loosely assembly bolts and nuts.
Figure 124
manifold
1.
Bolt and spacer for left exhaust
Anti-seize compound
1. Apply anti-seize compound to all bolt threads.
2. Position exhaust manifold gasket.
3. Install left exhaust manifold, using eight M8 x 40
prevailing torque hex flange bolts and spacers.
Start with the second bolt from the rear on top.
The hole diameter is smaller, to allow alignment
of the remaining bolts.
4. Tighten bolts to specified torque (Table 8) and in
the specified sequence (Figure 121).
Figure 123
EGR cooler V-clamp
6. Install steel gasket for EGR cooler.
7. Attach right exhaust tube assembly to EGR cooler
assembly with V-clamp. Do not tighten V-clamp.
Figure 125
EBP sensor tube fitting
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
93
5. Apply anti-seize compound to the threads of the
EBP sensor tube fitting.
6. Install EBP sensor tube to exhaust manifold and
tighten fitting to the special torque (Table 8).
Figure 127 Mounting bolts for shielded tube
exhaust assembly on left exhaust manifold
9. Apply anti-seize compound to two M8 x 60 bolts
securing the shielded tube exhaust assembly to
the exhaust manifold flange. Loosely assemble
bolts and nuts.
Figure 126
Exhaust tube bolts (upper right)
7. Apply anti-seize compound to the threads of two
M8 x 30 bolts and prevailing torque nuts.
8. Install a new exhaust tube gasket and secure
the shielded tube exhaust assembly (upper right
side) to the right exhaust tube assembly. Loosely
assemble bolts and nuts.
10. For VGT installation procedure, see (Installation,
page 67).
11. After VGT installation, torque all bolts for VGT
tubing in the following order:
a. Shielded exhaust tube assembly at right
exhaust tube (upper flange)
b. Turbocharger exhaust adapter V-clamp
c.
EGR cooler V-clamp
d. Shielded exhaust tube assembly at left
manifold
e. Exhaust tube assembly at right manifold
See (Table 8) for special torque specifications.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
94
Exhaust Gas Recirculation (EGR) Valve
Figure 129
Seat EGR valve
3. When installing the EGR valve into the intake
manifold, make sure the valve is completely
seated by hand before installing bolts.
NOTE: Failing to completely seat the EGR valve
into the intake manifold, before inserting the
mounting bolts, may cause damage to the EGR
valve.
Figure 128
1.
2.
3.
EGR valve assembly
Large O-ring
Valve group O-rings (2)
Common pintle shaft
1. Install a large O-ring on the EGR valve.
2. Lubricate two new valve group O-rings with
a solution of dish washing soap and water
(approximately 50/50 mix) and install O-rings on
EGR valve.
Figure 130
1.
2.
3.
Insatallation of EGR valve
M6 x 35 bolt
EGR valve
8-pin electrical connector
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
4. Thread two M6 x 35 bolts by hand and tighten,
alternating between both bolts to the standard
torque (Standard Torques, page 375).
5. Connect 8-pin electrical connector to EGR valve.
95
6. Reinstall all safety guards, shields, and covers.
7. Make sure all tools, cleanliness covers, loose
parts, and service equipment are removed from
the engine work area.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
96
Specifications
Table 7
Intake and Exhaust Manifolds
Exhaust Manifold
Maximum allowable warpage
0.08 mm (0.003 in)
Intake Manifold
Between ports: 0.13 mm (0.005 in)
Maximum allowable clearance
Total: 0.25 mm (0.010 in)
Special Torque
Table 8
Manifolds and Exhaust Gas Recirculation (EGR)
Intake manifold, M6 x 95 hex flange bolt or stud bolt
dog point
11 ± 1 N·m (96 ± 10 lbf·in)
Intake heat shield, M6 hex flange nut
11 ± 3 N·m (96 ± 24 lbf·in)
Exhaust manifold hex flange bolts
1
38 ± 4 N·m (28 ± 3 lbf·ft) (Figure 122)
EBP tube assembly1
EBP tube connector
30 ± 1 N·m (22 ± 1 lbf·ft)
1
14 - 15 N·m (120 - 132 lbf·in)
Shielded exhaust tube to exhaust manifold (left side)
1
Shielded tube exhaust to right side exhaust tube1
Exhaust tube to exhaust manifold (right side)
1
Turbocharger exhaust adapter V-clamp
EGR cooler V-clamp
1
27 ± 4 N·m (20 ± 3 lbf·ft)
27 ± 4 N·m (20 ± 3 lbf·ft)
27 ± 4 N·m (20 ± 3 lbf·ft)
12 N·m (108 lbf·in)
6 N·m (48 lbf·in)
Apply anti-seize compound to bolt threads before assembly.
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
97
Special Service Tools
Table 9
Manifolds and Exhaust Gas Recirculation (EGR)
Description
Tool Number
Anti-Seize Compound
Obtain locally
Cap Kit (All)
ZTSE4610
EGR Cooler Pressure Test Plates
ZTSE4545
EGR Valve Puller
ZTSE4669
Feeler Gauge
Injector Sleeve Brush
Obtain locally
ZTSE43041
Intake Manifold Pressure Test Plates
ZTSE4527
Intake Manifold Pressure Test Plug (Replaces EGR Valve)
ZTSE4544
Intake Manifold Pressure Test Cap
ZTSE4554
Intake Port Covers (cylinder heads)
ZTSE4559
Pressure Test Adaptor (intake)
ZTSE4554
Straightedge
Obtain locally
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
98
MANIFOLDS AND EXHAUST GAS RECIRCULATION (EGR)
EGES295-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2006 International Truck and Engine Corporation
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