1998 ISUZU TROOPER Service Repair Manual

Page 1785 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A – 52 ENGINE MECHANICAL
TIMING GEAR 
REMOVAL
1. Loosen fixing bolt for generator and remove
generator assembly.
2. Remove fixing nuts, then remove cooling fan
assembly and fan pulley.
3. Remove cr

Page 1786 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A – 53
Legend
(1) Bolt
(2) Retainer
(3) Idle Gear A
(4) Idle Gear A Shaft
(5) Align Mark
(6) Crankshaft Gear
(7) O-Ring
13. Idle gear C
1) Use the special tool on idle gear C, tur

Page 1787 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A – 54 ENGINE MECHANICAL
15. High pressure oil pump
1) Remove oil pump gear fixing bolt then remove
oil pump.
Legend
(1) O-Ring
(2) High Pressure Oil Pump Gear
(3) Bolt
(4) Timing Mark
16. Remove b

Page 1788 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A – 55
3. Idle gear A
1) Insert idle gear A shaft to align alignment mark
between idle gear A shaft and timing gear case.
2) Apply engine oil to the shaft surface.
3) Install the

Page 1789 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A – 56 ENGINE MECHANICAL
Legend
(1) Bolt
(2) Retainer
(3) Idle Gear B
(4) Idle Gear B Shaft
(5) Align Mark
6. High pressure oil pump
1) Install O-ring on the high pressure oil pump.
2) Install the

Page 1790 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A – 57
10. Vacuum pump
1) Install vacuum pump and tighten bolts to
specified torque.
Torque: 25 N·m (2.5 kg·m / 18 lb ft)
2) Install noise insulator cover.
11. Power steering pu

Page 1791 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A – 58 ENGINE MECHANICAL
14. Camshaft pulley
1) Align TDC mark with crankshaft pulley and gear
case cover.
2) Set camshaft stopper on the end of intake and
exhaust camshaft.
Camshaft Stopper: 5-884

Page 1792 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A – 59
18. Crankshaft damper pulley
1) Insert damper pulley with the crankshaft key
groove set on the key.
2) Tighten damper pulley bolt to the specified
torque. 
Torque: 220 N·m