wheel bolt torque ISUZU TROOPER 1998 Service Owner's Guide

6A±44
ENGINE MECHANICAL

The oil seal retainer must be installed within 5
minutes after sealant application before the sealant
hardens.
015RW002
Legend
(1) Around Bolt Holes
(2) Around Dowel Pin

Apply engine oil to oil seal lip and align a dowel pin
hole in the cylinder block with that in the retainer.

Tighten retainer fixing bolts to the specified torque.
Torque : 18 N´m (1.8 Kg´m/13 lb ft)
015RW001
5. Install flywheel.

Clean tapped holes in the crankshaft.

Remove oil on crankshaft and flywheel fitting
surface.
NOTE:

Do not reuse the bolts.

Do not apply oil or thread lock to the bolts.
Tighten fixing bolts to the specified torque.
Torque : 54 N´m (5.5 Kg´m/40 lb ft)
015RS018
6. Install oil gallery.

Clean contact surface of oil gallery and main
bearing cap.
Apply engine oil to oil gallery fixing bolts and tighten
the bolts in two steps, in the order shown in
illustration.
Torque :
1st step : 29 N´m (3.0 Kg´m/21 lb ft)
2nd step : 55
±65

7. Install cylinder body side bolts and tighten bolts in
order to the specified torque.
Torque : 39 N´m (4.0 Kg´m/29 lb ft)
NOTE: Do not apply the oil to the bolts.
012RS007
8. Install oil pump assembly.

Remove oil on cylinder block and oil pump mounting
surface.

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: W h e n 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±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
2 Sensor (for IGM)
150RW062
Legend
(1) Exhaust Front Pipe LH
7. Reconnect O2 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.

6A±70
ENGINE MECHANICAL
7. Remove oil gallery (7).
8. Remove piston and connecting rod assembly (8).
Refer to ªPiston, Piston Ring and Connecting Rodº in
this manual.
9. Remove flywheel (9).
10. Remove rear oil seal retainer (10).
11. Remove main bearing cap (11).
12. Remove crankshaft (12).
Inspection and Repair
1. Crankshaft
Set the dial indicator as shown in the illustration and
measure the crankshaft thrust clearance. If the thrust
clearance exceeds the specified limit, replace the
thrust bearings as a set.
Thrust Clearance
Standard : 0.06 mm±0.24 mm
(0.0024 in±0.0094 in)
Limit : 0.30 mm (0.0118 in)
015RS003
Main Bearing Clearance
1. Remove the bearing caps and measure the oil
clearance.
2. Remove the main bearing cap fixing bolts in the
sequence shown in the illustration.
Arrange the removed main bearing caps in the
cylinder number order.
Remove the main bearings.
015RS004
3. Remove the crankshaft.
Remove the main bearings.
4. Clean the upper and lower bearings as well as the
crankshaft main journal.
5. Check the bearings for damage or excessive wear.
The bearings must be replaced as a set if damage or
excessive wear is discovered during inspection.
6. Set the upper bearings and the thrust washers to their
original positions.
Carefully install the crankshaft.
7. Set the lower bearings to the bearing cap original
position.
8. Apply plastigage to the crankshaft journal unit as
shown in the illustration.
NOTE: Do not set the plastigage on the oil hole.
015RS005
9. Install main bearing caps, oil gallery and crank case
bolts in the order shown, and tighten each bolt to the
specified torque.

6A±74
ENGINE MECHANICAL
015RW002
Legend
(1) Around Bolt Holes
(2) Around Dowel Pin

Apply engine oil to the oil seal lip.

Align the cylinder block dowel pin holes with the rear
retainer dowel pins.

Tighten the rear retainer fixing bolts. New bolts
should be used when installing rear retainer.
Torque: 18 N´m (1.8 Kg´m/13 lb ft)
NOTE: Be very careful not to disengage the oil seal garter
spring during installation of the rear retainer.
If the seal was removed from retainer for
replacement, apply engine oil to the oil seal lip and
install the oil seal using 5±8840±2286±0 oil seal
installer.
015RW001
015RS017
3. Flywheel (9)
1. Thoroughly clean and remove the oil from the
threads of crankshaft.
2. Remove the oil from the crankshaft and flywheel
mounting faces.
3. Mount the flywheel on the crankshaft and then
install the washer.
4. Hold the crankshaft to prevent from rotating then
install the bolts in the order shown to the specified
torque.
Torque: 54 N´m (5.5 Kg´m/40 lb ft)
NOTE: Do not reuse the bolt and do not apply oil or thread
lock to the bolt.
015RS018

6A±88
ENGINE MECHANICAL
015RW001
4. Install flywheel
1. Thoroughly clean and remove the oil from the
threads of crankshaft.
2. Remove the oil from the crankshaft and flywheel
mounting faces.
3. Mount the flywheel on the crankshaft and then
install the washer.
4. Holding the crankshaft stationary, tighten the
flywheel bolts in the order shown.
Torque: 54 N´m (5.5 Kg´m/40 lb ft)
NOTE: Do not reuse the bolts and do not apply oil or
thread lock to the bolts.
015RS018
5. Install piston and connecting rod assembly.

Apply engine oil to the cylinder bores, the
connecting rod bearings and the crankshaft pins.
NOTE: Do not apply engine oil to the bearing back faces.
Check to see that the piston ring end gaps are
correctly positioned.
015RS019
Legend
(1) No.1 Compression Ring
(2) No.2 Compression Ring
(3) Oil Ring Side Rail Upper
(4) Oil Ring Side Rail Lower
(5) Piston Front Mark

Insert the piston/connecting rod assemblies into
each cylinder with the piston ring compressor.

The front marks (1) must be facing the front of the
engine.
015RS020
6. Install oil gallery and tighten the bolts in 2 steps in the
order shown.
1st step : 29 N´m (3.0 Kg´m/22 lb ft)
2nd step : 55
~ 65

6C±7
ENGINE FUEL
Fuel Pump Relay
General Description
In order to control the FP operation, the FP relay is
provided. When the starter switch is turned to ªONº
position, the FP relay operates the FP for 2 seconds.When it is turned to ªSTARTº position, the Power Train
Control Module (PCM) receives the reference pulse from
the Ignition Control Module and it operates the relay,
again causing the FP to feed fuel.
Fuel Tank
Fuel Tank and Associated Parts
035RW048
Legend
(1) Fender Liner
(2) Fuel Filler Hose and Air Breather Hose and
Evapo Hose
(3) Undercover(4) Fuel Tank Wiring Connector
(5) Evapo Fuel Hose
(6) Fuel Feed Tube and Fuel Return
Tube/Quick±Connect Fittings
(7) Fuel Tank
Removal
CAUTION: When repair to the fuel system has been
completed, start engine and check the fuel system
for loose connection or leakage. For the fuel system
diagnosis, see Section ªDriveability and Emissionº.
1. Disconnect battery ground cable.
2. Loosen fuel filler cap.3. Drain fuel.
Tighten drain plug to the specified torque after
draining fuel.
Torque: 20 N´m (2.0 Kg´m/14 lb ft) Ð M8
4. Remove fender liner (1) of wheel well on rear right
side.
5. Fuel filler hose, air breather hose and evapo hose (2).
6. Remove undercover fixing bolts on both sides and
remove under cover(3).

6C±8
ENGINE FUEL
7. Disconnect two fuel tank wiring connectors(4) on
front right side of tank.
8. Disconnect evapo fuel hose(5).
9. Disconnect fuel feed tube and fuel return tube(6).
NOTE: Handling of the fuel tube, be sure to refer ªFuel
Tube/Quick±Connect Fittingsº in this section.
10. Remove fuel tank fixing bolts on both sides and
remove fuel tank(7).
Installation
1. Install fuel tank(7).

Place a flange on right side of tank on the bracket.
Install a flange on left side on the bracket from the
bottom, and tighten bolts to the specified torque.
Torque: 36 N´m (3.7 Kg´m/27 lb ft)
2. Connect fuel feed tube and fuel return tube(6).
3. Connect evapo fuel hose(5).
4. Connect fuel tank wiring connector(4).
5. Install undercover(3).
6. Connect fuel filler hose, air breather hose and evapo
hose(2).
7. Install fender liner(1).

Mount fender liner to the wheel well.

Fill the tank with fuel and tighten fuel filler cap.

Connect battery ground cable.
Fuel Tube / Quick ± Connect Fittings
Precautions

Lighting of Fires Prohibited.

Keep flames away from your work area to prevent the
inflammable from catching fire.

Disconnect the battery negative cable to prevent
shorting during work.

When welding or conducting other heat-generating
work on other parts, be sure to provide pretreatment
to protect the piping system from thermal damage or
spattering.
Cautions During Work
Do not expose the assembly to battery electrolyte or do
not wipe the assembly with a cloth used to wipe off spilt
battery electorolyte.
The piping wet with battery electrolyte cannot be used.
Be careful not to give a bending or twisting force to the
piping during the work. If deformed, replace with a new
piping.
Removal
1. Open the fuel cap to relieve the fuel pressure in the
tank.
If the fuel quick-connect fittings are dusty, clean with
an air blower, etc. and then remove it.
141RW016As some pressure may remain in the piping, cover the
connector with a cloth, etc. to prevent the splashing
of fuel in the first disconnection of the piping.

6A Ð 18 ENGINE MECHANICAL
8. Camshaft
1) Apply a coat of engine oil to the camshaft and the
camshaft bearings.
Install the camshaft to the cylinder body.
Take care not to damage the camshaft bearings.
7. Camshaft Thrust Plate
Install the thrust plate to the cylinder body and tighten the
thrust plate bolts to specified torque.
6. Camshaft Timing Gear
1) Install the camshaft timing gear to the camshaft.
The timing gear mark ("Y - Y") must be facing out-
ward.
2) Tighten the timing gear to the specified torque.
5. Oil Pump Assembly
¥ Refer to Section 6A2 ÒOil Pump InstallationÓ.
4. Crankcase Assembly
¥ Refer to Section 6A2 ÒCrankcaseÓ.
3. Cylinder Block Rear Plate
¥ Tighten cylinder block rear plate fixing bolts to the
specified torque.
18 (1.8/13)N·m(Kg·m/lb·ft)
64 (6.5/47)N·m(Kg·m/lb·ft)
82 (8.4/61)N·m(kg·m/lb·ft)
2. Flywheel
¥ Refer to Section 6A2 ÒCrankshaft InstallationÓ.
1. Cylinder Head Assembly
¥ Refer to Section 6A2 ÒCylinder Head InstallationÓ.

6A Ð 24 ENGINE MECHANICAL
4. Oil Pump Assembly
¥ Apply molybdenum mixed engine oil to drive
gear of camshaft and driven gear of oil pump.
¥ Tighten the oil pump fixing bolt to the specified
torque
3. Crankcase Assembly
¥ Refer to Section 6A2 ÒCrankcaseÓ.
2. Cylinder Block Rear Plate
¥ Align the rear plate with the cylinder body knock
pins. Tighten the rear plate to the specified
torque.
1. Flywheel
¥ Refer to Section 6A2 ÒCrankshaft and Main
BearingÓ.
19 (1.9/14)
N·m(kg·m/lb·ft)
82 (8.4/61)
N·m(kg·m/lb·ft)