1998 ISUZU TROOPER timing belt

6A±29
ENGINE MECHANICAL
Timing Belt
Removal
1. Disconnect battery ground cable.
2. Remove air cleaner assembly.
3. Remove radiator upper fan shroud from radiator.
4. Move drive belt tensioner to loose side using wrench
then remove drive belt.
850RW001
Legend
(1) Crankshaft Pulley
(2) Cooling Fan Pulley
(3) Tensioner
(4) Generator
(5) Air Conditioner Compressor
(6) Power Steering Oil Pump
(7) Drive Belt
5. Remove cooling fan assembly four nuts, then the
cooling fan assembly.
6. Remove cooling fan drive pulley assembly.
7. Remove idle pulley assembly.
8. Remove serpentine belt tensioner assembly.
9. Remove power steering pump assembly.
10. Remove crankshaft pulley assembly using
5±8840±0133±0 crankshaft holder, hold crankshaft
pulley remove center bolt, then the pulley.
11. Remove right side timing belt cover then left side
timing belt cover.
12. Remove lower timing belt cover
13. Remove pusher.CAUTION: The pusher prevents air from entering
the oil chamber. Its rod must always be facing
upward.
014RW011
Legend
(1) Up Side
(2) Down Side
(3) Direction For Installation
(4) Locking Pin
14. Remove timing belt.
CAUTION:
1. Do not bend or twist the belt, otherwise its core
could be damaged. The belt should not be bent at
a radius less than 30 mm.
2. Do not allow oil or other chemical substances to
come in contact with the belt. They will shorten
the life.
3. Do not attempt to pry or stretch the belt with a
screw driver or any other tool during installation.
4. Store timing belt in a cool and dark place. Never
expose the belt direct sunlight or heat.

6A±30
ENGINE MECHANICAL
Installation
NOTE: For correct belt installation, the letter on the belt
must be able to be read as viewed from the front of the
vehicle.
014RY00042
Legend
(1) Crankshaft Timing Pulley
(2) RH Bank Camshaft Drive Gear Pulley
(3) Water Pump Pulley
(4) Idle Pulley
(5) LH Bank Camshaft Drive Gear Pulley
(6) Tension Pulley
014RY00043
Legend
(7) Alignment Mark on Oil Pump.
(8) Alignment Mark on Timing Belt
(9) Alignment Mark (notch) on Crankshaft Timing
Pulley.
(10) Alignment Mark (groove) on Crankshaft Timing
Pulley.
014RW006
Legend
(1) Timing Belt
(2) Engine Rotation Direction
(3) Cylinder Head Side
1. Install timing belt.
1. Align the mark (notch) of crankshaft timing pulley
(2) with mark on oil pump (1).
Align the mark (groove) on the crankshaft timing
pulley (3) with alignment mark (white dots line) on
the timing belt (4).
NOTE: When timing marks are aligned, No.2 piston will
be on Top Dead Center.
014RW003
Legend
(1) Alignment Mark on Oil Pump
(2) Groove on Crankshaft Timing Pulley
(3) Alignment Mark on Crankshaft Timing Pulley
(4) Alignment Mark on Timing Belt

6A±31
ENGINE MECHANICAL
2. Align the alignment mark on the RH bank
camshaft drive gear pulley (2) to the alignment
mark of the cylinder head cover RH (3).
3. Align the alignment mark (white line) on the timing
belt (1) with alignment mark on the RH bank
camshaft drive gear pulley (2) (on the left side as
viewed from the front of the vehicle) and put the
timing belt on the camshaft drive gear pulley.
Secure the belt with a double clip or equivalent
clip.
014RW00004
Legend
(1) Alignment Mark on Timing Belt (White line).
(2) Alignment Mark on Camshaft Drive Gear
Pulley.
(3) Alignemnt Mark on Cylinder Head Cover RH.
4. Align the alignment mark on the LH bank
camshaft drive gear pulley (2) to the alignment
mark of the cylinder head cover LH (3).
5. Align the alignment mark (white line) on the timing
belt (1) with the alignment mark on the LH bank
camshaft drive gear pulley (2).
When aligning the timing marks, use a wrench to
turn the camshaft drive gear pulley, then set the
timing mark between timing belt and camshaft
drive gear pulley and put the timing belt on the
camshaft drive gear pulley.
Secure the belt with a double clip or equivalent
clip.
NOTE: It is recommended for easy installation that the
belt be secured with a double clip or equivalent clip after
it is installed the timing belt to each pulley.
014RW00005
Legend
(1) Alignment Mark on Timing Belt (White line).
(2) Alignment Mark on Camshaft Drive Gear
Pulley.
(3) Alignemnt Mark on Cylinder Head Cover LH.
6. Install crankshaft pulley temporarily and tighten
center bolt by hand (do not use a wrench).
Turn the crankshaft pulley clockwise to give some
belt slack between the crankshaft timing pulley
and the RH bank camshaft drive gear pulley.
2. Install pusher and tighten bolt to the specified torque.
Torque : 25 N´m (2.5 Kg´m/18 lb ft)
1. Install the pusher while pushing the tension pulley
to the belt.
2. Pull out pin from the pusher.
NOTE: When reusing the pusher, press the pusher with
approximately 100Kg to retract the rod, and insert a pin
(1.4 mm piano wire).
014RW011

6A±32
ENGINE MECHANICAL
Legend
(1) Up Side
(2) Down Side
(3) Direction for Installation
(4) Locking Pin
3. Remove double clips or equivalent clips, from
timing belt pulleys.
Turn the crankshaft pulley clockwise by two turns.
3. Install timing belt cover.
Remove crankshaft pulley that was installed in step
1 item 5.
Tighten bolts to the specified torque.
Torque: 19 N´m (1.9 Kg´m/14 lb ft)
020RW004
Legend
(1) Timing Belt Cover RH
(2) Timing Belt Cover LH
(3) Timing Belt Cover Lower
020RW003
Legend
(1) Timing Belt Cover
(2) Rubber Bushing
(3) Sealing Rubber
(4) Cylinder Body
4. Install crankshaft pulley using 5±8840±0133±0, hold
the crankshaft pulley and tighten center bolt to the
specified torque.
Torque : 167 N´m (17.0 Kg´m/123 lb ft)
5. Install fan pulley bracket and tighten fixing bolts to the
specified torque.
Torque : 22 N´m (2.2 Kg´m/16 lb ft)
6. Install power steering pump assembly and tighten to
the specified torque.
Torque :
M8 bolt : 22 N´m (2.2 Kg´m/16 lb ft)
M10 bolt : 46 N´m (4.7 Kg´m/34 lb ft)
7. 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.
8. Move drive belt tensioner to loose side using wrench,
then install drive belt to normal position.
850RW001
Legend
(1) Crankshaft Pulley
(2) Cooling Fan Pulley
(3) Auto Tensioner
(4) Generator
(5) Air Conditioner Compressor
(6) Power Steering Oil Pump
(7) Idle Pulley
(8) Drive Belt
9. Install radiator upper fan shroud.
10. Install air cleaner assembly.

6A±33
ENGINE MECHANICAL
Camshaft
Removal
1. Disconnect battery ground cable.
2. Remove crankshaft pulley.

Refer to removal procedure for Crankshaft Pulley in
this manual.
3. Remove timing belt.

Refer to removal procedure for Timing Belt in this
manual.
4. Remove cylinder head cover LH.

Refer to removal procedure for Cylinder Head
Cover LH in this manual.
5. Remove cylinder head cover RH.

Refer to removal procedure for Cylinder Head
Cover RH in this manual.
6. Remove twenty fixing bolts from inlet and exhaust
camshaft bracket on one side bank, then camshaft
brackets.
014RW027
7. Remove camshaft assembly.
8. Remove fixing bolt for camshaft drive gear pulley.
9. Remove three fixing bolts from camshaft drive gear
retainer, then camshaft drive gear assembly.
014RW026
Legend
(1) Right Bank
(2) Left Bank
(3) Timing Mark on Retainer
Installation
1. Install camshaft drive gear assembly and tighten
three bolts to the specified torque.
Torque : 10 N´m (1.0 Kg´m/89 lb in)
2. Tighten bolt for camshaft drive gear assembly pulley
to the specified torque.
Torque : 98 N´m (10.0 Kg´m/72 lb ft)
3. Tighten sub gear setting bolt.
1. Use the 5±8840±2443±0 gear spring lever to turn
sub gear to right direction until it aligns with the M5
bolt hole between camshaft driven gear and sub
gear.
2. Tighten the M5 bolt to a suitable torque to prevent
the sub gear from moving.

6A±35
ENGINE MECHANICAL
014RW024
Legend
(1) Right Bank
(2) Left Bank(3) Alignment Mark on Camshaft Drive Gear
(4) Alignment Mark on Camshaft
(5) Alignment Mark on Retainer
3. Tighten twenty bolts on numerical order an one
side bank as shown in the illustration.
Torque : 10 N´m (1.0 Kg´m/89 lb in)
014RW031
5. Install cylinder head cover RH.

Refer to installation procedure for CYLINDER
HEAD COVER RH in this manual.
6. Install cylinder head cover LH.

Refer to installation procedure for CYLINDER
HEAD COVER LH in this manual.
7. Install timing belt.

Refer to installation procedure for TIMING BELT in
this manual.8. Install crankshaft pulley.

Refer to installation procedure for CRANKSHAFT
PULLEY in this manual.
Accelerator pedal cable adjustment
1. Loosen adjusting nut and lock nut.
2. Pull outer cable while closing fully the throttle
valve.
3. Tighten adjusting nut and lock nut temporarily.

6A±37
ENGINE MECHANICAL
Cylinder Head
Removal
1. Remove engine hood.
2. Disconnect battery ground cable.
3. Drain radiator coolant.
4. Drain engine oil.
5. Remove crankshaft pulley.

Refer to removal procedure for Crankshaft Pulley in
this manual.
6. Remove timing belt.

Refer to removal procedure for Timing Belt in this
manual.
7. Remove cylinder head cover LH.

Refer to removal procedure for Cylinder Head
Cover LH in this manual.
8. Remove cylinder head cover RH.

Refer to removal procedure for Cylinder Head
Cover RH in this manual.
9. Remove common chamber.

Refer to removal procedure for Common Chamber
in this manual.
10. Remove cylinder head assembly.
1. Loosen eights bolts for tight cylinder head.
2. Remove cylinder head assembly.
014RW028
Legend
(1) Cylinder Head
(2) Cylinder Head Bolt
(3) Camshaft
Installation
1. Install cylinder head assembly to cylinder block.
1. Put cylinder head gasket on the cylinder block.NOTE: There is discrimination mark ªRº for right bank
and ªLº for left bank on the cylinder head gasket as shown
in the illustration.
Do not reuse cylinder head gasket.
011RW005
2. Align dowel pin hole to dowel pin on the cylinder
block.
3. Tighten two bolts temporarily by hand to prevent
the cylinder head assembly from moving.
4. Using 9±8511±4209±0 cylinder head bolt wrench,
tighten bolts in numerical order as shown in the
illustration to the specified torque.
NOTE: Do not reuse cylinder head bolts.
Do not apply any lubricant to the cylinder head bolts.
Torque :
Temporary : 29 N´m (3.0 Kg´m/21 lb ft)
Final : 64 N´m (6.5 Kg´m/47 lb ft)
014RW029

6A±38
ENGINE MECHANICAL
2. Install common chamber.

Refer to installation procedure for Common
Chamber in this manual.
3. Install cylinder head cover RH.

Refer to installation procedure for Cylinder Head
Cover RH in this manual.
4. Install cylinder head cover LH.

Refer to installation procedure for Cylinder Head
Cover LH in this manual.
5. Install timing belt.

Refer to installation procedure for Timing Belt in this
manual.
6. Install crankshaft pulley.

Refer to installation procedure for Crankshaft
Pulley in this manual.
Accelerator pedal cable adjustment
1. Loosen adjusting nut and lock nut.
2. Pull outer cable while closing fully the throttle
valve.
3. Tighten adjusting nut and lock nut temporarily.
4. Loosen adjusting nut by three turns and tighten
lock nut.
Then, manually operating the throttle valve, make
sure that the valve lever returns up to the stopper
screw.
If it does not reach the stopper screw, repeat from
step 1.
035RW004
Legend
(1) Clearance
(2) Lock Nut
(3) Adjusting Nut