ISUZU TROOPER 1998 Service Repair Manual

MEMO

INDUCTION 6J – 1
INDUCTION
CONTENTS
General Description . . . . . . . . . . . . . . . . . . 6J–2
Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . 6J–3
Turbocharger . . . . . . . . . . . . . . . . . . . . . . . 6J–4
Intercooler . . . . . . . . . . . . . . . . . . . . . . . . . 6J–9Intake Throttle Valve . . . . . . . . . . . . . . . . . . 6J–10
Intake Manifold . . . . . . . . . . . . . . . . . . . . . . 6J–11
Main Data and Specifications . . . . . . . . . . . 6J–12

6J – 2 INDUCTION
There is a large intake silencer provided at the entrance
of the air cleaner. Air cleaner element is a viscous type
which features high filtration efficiency.
A resonator is used also in the air duct between the air
cleaner and turbocharger to reduce air intake noise.
The air taken in flows through the turbocharger to the
intercooler where the air is cooled and then taken in the
cylinder through the intake manifold.
71
23
4 8
5 6
Legend
(1) Air Cleaner
(2) Connector for Fuel Tank Breather Hose
(3) Resonator
(4) Air Duct(5) Connector for PCV Hose
(6) Connector for EGR VSV Hose
(7) Air Duct
(8) Air Duct
130R200003
GENERAL DESCRIPTION

INDUCTION 6J – 3
REMOVAL
1. Remove air cleaner cover with air duct.
2. Remove air cleaner element.
INSPECTION
Check air cleaner element for clogs, chokes and
breaks, and if any problem is found during inspection,
the element must be replaced.
INSTALLATION
1. Air cleaner element
2. Air cleaner cover with air duct.
1) Put air cleaner cover in original position and
tighten it with the clip.
130RW010
AIR CLEANER

6J – 4 INDUCTION
TURBOCHARGER
9
598 For Europe875 63
21
4
7
4
2
1
36
Legend
(1) Exhaust Manifold
(2) Gasket
(3) Turbocharger Assembly
(4) Water Hose(5) Water Hose
(6) Heat Protector
(7) Oil Pipe
(8) Oil Pipe
(9) Gasket
025R200004

INDUCTION 6J – 5
REMOVAL
1. Remove battery.
2. Drain engine coolant.
3. Remove air cleaner cover and air duct.
4. Remove intercooler assembly.
Refer to “Intercooler” in this manual.
5. Remove water pipe from water inlet of
turbocharger.
6. Remove oil pipe.
1) Remove fixing bolts from oil inlet of turbocharger
then remove oil pipe.
2) Plug open port of turbocharger to prevent
foreign materials from entering the turbocharger.
7. Remove oil drain pipe from turbocharger.
8. Remove water outlet pipe from turbocharger.
9. Remove heat protector.
10. Remove exhaust valve assembly.
11. Remove turbocharger fixing nuts from exhaust
manifold then remove turbocharger assembly.
For Europe
025R200006

6J – 6 INDUCTION
INSPECTION AND REPAIR
Make the necessary adjustments, repairs and part
replacements if excessive wear or damage is
discovered during inspection.
Minor servicing operations are described in this section.
Contact the nearest IHI SERVICE FACILITY for major
repairs and maintenance.
Refer to IHI SERVICE NETWORK at the end of this
section for the location of your area’s IHI SERVICE
FACILITY.
Turbine shaft end play.
1) Set a dial indicator to the turbine shaft end.
2) Apply a force of 11.8 N (1.2 kg / 2.6 lb)
alternately to the compressor wheel and and the
turbine wheel end.
3) Read the dial indicator.
Turbine End Play
Standard: 0.03 – 0.06 mm (0.0012 – 0.0024 in)
Limit: 0.09 mm (0.0035 in)Turbine shaft and bearing clearance
1) Set a dial indicator to the turbine shaft center
through the center housing oil drain port.
2) Move the turbine shaft from side to side.
3 Read the dial indicator.
Turbine Shaft and Bearing Clearance
Standard: 0.056 - 0.127 mm (0.0022 - 0.0050 in)
Limit: 0.14 mm (0.0055 in)
Waste gate operation
1) Remove hose from waste gate actuator side and
install pressure gauge (1) to the waste gate
actuator.
2) Operate pump of pressure gauge while engine is
stopped.
3) Read pressure at the control rod (2) move 2mm.
Pressure: 106 – 115 kPa
(796 – 862 mmHg/ 15.4 – 16.7 PSi)
036RW008
036RW010
036RW009
036RW007

INDUCTION 6J – 7
Legend
(1) Pressure gauge
(2) Waste gate control rod
4) Check for cracks or breaks on the hose, if a
problem is found, the hose must be replaced.
CAUTION: Do not apply more than 120 Kpa (900
mmHg / 18.7 PSi) to waste gate actuator.
INSTALLATION
1. Install turbocharger assembly to exhaust manifold,
tighten to the specified torque.
Torque: 27 N·m (2.7 kg·m / 19.5 lb ft)2. Install exhaust valve assembly to outlet of
turbocharger, tighten bolts to the specified torque.
Torque: 27 N·m (2.7 kg·m / 19.5 lb ft)
3. Install heat protector.
4. Water inlet pipe.
1) Tighten water inlet pipe with new gasket.
Torque: 9 N·m (0.9 kg·m / 6.5 lb ft)
5. Oil drain pipe.
1) Tighten oil drain pipe with new gasket.
Torque: 9 N·m (0.9 kg·m / 6.5 lb ft)
6. Oil inlet pipe.
1) Apply about 100 cc engine oil to turbocharger
housing before installing the oil pipe.
2) Turn the turbine shaft by hand to lubricate the
bearing.
3) Install the oil inlet pipe with a new gasket, tighten
bolt to the specified torque.
Torque: 22 N·m (2.2 kg·m / 15.9 lb ft) For M10
Torque: 54 N·m (5.5 kg·m / 39.8 lb ft) For M14
2
1
036RW011
For Europe
025R200007
For Europe
025R200006

6J – 8 INDUCTION
7. Water inlet pipe.
1) Install water inlet pipe with a new gasket, tighten
bolts to the specified torque.
Torque: 9 N·m (0.9 kg·m / 6.5 lb ft)
8. Install intercooler assembly.
Refer to “Intercooler” in this manual.
9. Install air cleaner cover with air duct.
10. Fill engine coolant to full level.
11. Install battery and connect battery cable.
For Europe
025R200007

INDUCTION 6J – 9
INTERCOOLER
REMOVAL
1. Disconnect battery ground cable.
2. Remove air cleaner cover with air duct.
3. Remove intercooler cover.
4. Intercooler assembly.
1) Remove rubber hose from intercooler outlet
side.
2) Remove rubber hose from intercooler inlet side.
3) Remove four fixing bolts and remove intercooler
assembly.
INSPECTION AND REPAIR
1. Visual check for clogs in the fins.
2. Check for brokens on the tube.
3. If any problem on the intercooler is observed during
inspection, clean or replace the intercooler.
INSTALLATION
1. Intercooler assembly.
1) Connect outlet hose to intake manifold.
Tighten hose clamp to the specified torque.
Torque: 4 N·m (0.4 kg·m / 3 lb ft)
2) Connect inlet hose to the turbocharger outlet
side.
Tighten hose clamp to the specified torque.
Torque: 4 N·m (0.4 kg·m / 3 lb ft)
3) Install intercooler assembly, tighten fixing bolts
to the specified torque.
Torque: 20 N·m (2.0 kg·m / 14.5 lb ft)
2. Install intercooler cover.
3. Install air cleaner cover and air duct.
4. Connect battery ground cable.
For Europe
2
33
1
Legend
(1) Air Cleaner Cover and Air Duct
(2) Intercooler Cover
(3) Intercooler Assembly
135R200003