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Isuzu Trooper (1998-2002 year). Manual - part 243

6A–46

ENGINE MECHANICAL

Tighten fixing bolts to the specified torque.

Torque : 25 N·m (2.5 Kg·m/18 lb ft)

013RW003

013RW002

13. Install timing belt.

Refer to installation procedure for Timing Belt in this
manual.

14. Install engine assembly.

Refer to installation procedure for Engine in this
manual.

6A–47

ENGINE MECHANICAL

Rear Oil Seal

Removal

1. Remove transmission assembly.

Refer to removal procedure for Transmission
section in this manual.

2. Remove flywheel.
3. Remove rear oil seal using a seal remover.

NOTE: Take care not to damage the crankshaft or oil seal
retainer when removing oil seal.

Installation

1. Apply engine oil to oil seal lip and install oil seal using

5–8840–2286–0.

015RS017

2. Install flywheel.

Clean tapped holes in the crankshaft.

Remove oil on the crankshaft and flywheel
mounting surface.

Tighten fixing bolts to the specified torque.

NOTE: Do not reuse the bolts and do not apply oil or
thread lock to the bolts.

Torque : 54 N·m (5.5 Kg·m/40 lb ft)

015RS018

3. Install transmission.

See Transmission section in this manual.

CAUTION: When assembling the engine and
transmission, confirm that dowels have been
mounted in the specified positions at the engine
side. Take care that dowel positions are different
between the manual transmission and the automatic
transmission.
Otherwise, the transmission may be damaged.

012RS009

6A–48

ENGINE MECHANICAL

Engine Assembly

Removal

035RW027

1. Disconnect battery ground and positive cable.
2. Remove battery.
3. Make alignment mark on the engine hood and hinges

before removal in order to return the hood to original
position exactly.

4. Remove engine hood.
5. Drain radiator coolant.
6. Disconnect accelerator cable and automatic cruise

control cable from throttle valve on common
chamber.

7. Disconnect air duct with air cleaner cover.
8. Remove air cleaner assembly.
9. Disconnect canister vacuum hose.

10. Disconnect vacuum booster hose.

11. Disconnect three engine harness connectors.

12. Disconnect harness connector to transmission (left

front side of engine compartment), disconnect shift
on the fly harness connector from front side of front
axle and remove transmission harness bracket from
engine left side.

13. Disconnect ground cable between engine and frame.
14. Disconnect bonding cable connector on the back of

right dash panel.

15. Disconnect bonding cable terminal on the left bank.
16. Disconnect starter harness connector from starter.
17. Disconnect generator harness connector from

generator.

18. Disconnect coolant reserve tank hose from radiator.
19. Remove radiator upper and lower hoses.
20. Remove upper fan shroud.
21. Remove cooling fan assembly four fixing nuts, then

the cooling fan assembly.

22. Move drive belt tensioner to loose side using wrench

then remove drive belt.

23. Remove power steering pump fixing bolts, then

power steering pump. Place the power steering pump
along with piping on the body side.

24. Remove air conditioning compressor fixing bolts from

bracket and place the compressor along with piping
on the body side.

25. Remove O

sensor harness connectors from exhaust

front pipe.

26. Remove three exhaust pipe fixing nuts from each

bank.

27. Remove two exhaust pipe fixing nuts from each

exhaust pipe, then move exhaust pipe to rear side of
vehicle.

28. Remove flywheel dust covers.
29. Disconnect two heater hoses from engine.
30. Disconnect fuel hoses from right side of transmission.

CAUTION: Plug fuel pipes on engine side and fuel
hoses from fuel tank.

31. Remove transmission assembly. Refer to

Transmission section in this manual.

32. Support the engine by engine hoist.
33. Remove two left side engine mount fixing bolts from

engine mount on chassis side.

34. Remove two right side engine mount fixing bolts from

engine mount on chassis side.

35. Remove engine assembly.

Installation

6A–49

ENGINE MECHANICAL

If the engine is assembled in the condition that the
dowels have not been mounted in the specified posi-
tions, the transmission may be damaged the trans-
mission.

012RS009

1. Install engine assembly. Tighten engine mount fixing

bolts to frame to the specified torque.

Torque: 41 N·m (4.2 Kg·m/30 lb ft)

2. Reconnect fuel hose to fuel pipe on engine.
3. Install transmission assembly. Refer to Transmission

section in this manual.

4. Reconnect two heater hoses to engine.
5. Install flywheel dust covers.
6. Install exhaust pipe and temporally tighten two (each

bank) rear exhaust flange nuts then tighten three stud
nuts (each bank) between exhaust manifold and
exhaust pipe, finally tighten rear side nuts to the
specified torque.

Torque:
Nuts: 43 N·m (4.4 Kg·m/32 lb ft)
Stud nuts: 67 N·m (6.8 Kg·m/49 lb ft)

150RW061

Legend

(1) Exhaust Front Pipe RH
(2) O

Sensor (for IGM)

150RW062

Legend

(1) Exhaust Front Pipe LH

7. Reconnect O

sensor connector.

8. Install cooling fan assembly and tighten bolts/nuts to

the specified torque.

Torque : 22 N·m (2.2 Kg·m/16 lb ft) for fan pulley
and fan bracket.

Torque : 10 N·m (1.0 Kg·m/88.5 lb in) for fan and
clutch assembly.

Content .. 241 242 243 244 ..