1998 ISUZU TROOPER Service Repair Manual

Page 1617 of 3573

ISUZU TROOPER 1998  Service Repair Manual 4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 15
TIMING GEAR
REMOVAL
Preparation:
·Disconnect battery ground cable.
·Drain coolant.
1. P/S Pump Drive Belt
·Loosen P/S pump mounting bolt and adjust bolt,
and rem

Page 1618 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A2 Ð 16 4JG2-NA/4JG2-TURBO ENGINE
2) Measure the idler gear end play before removing the
idler gear.
NOTE:
Refer to the following items for details on the backlash
and end play measurement procedure

Page 1619 of 3573

ISUZU TROOPER 1998  Service Repair Manual 4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 17
2) Remove the injection pump rear bracket bolts 2 from
the injection pump bracket 3.
3) Remove the injection pump rear bracket bolts 4 and
the bracket 5 from the cy

Page 1620 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A2 Ð 18 4JG2-NA/4JG2-TURBO ENGINE
13. Crankshaft 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

Page 1621 of 3573

ISUZU TROOPER 1998  Service Repair Manual 4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 19
3) Temporarily tighten the six injection pump nuts 5.
The injection pump nuts will be finally tightened after
the injection pump rear bracket bolts.
4) Install the

Page 1622 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A2 Ð 20 4JG2-NA/4JG2-TURBO ENGINE
4. Cranshaft Damper Pulley
Tighten the crankshaft damper pulley bolt to the specified
torque.
NOTE:
Hold the flywheel ring gear stationary to prevent the
crankshaft

Page 1623 of 3573

ISUZU TROOPER 1998  Service Repair Manual 4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 21
VALVE STEM OIL SEAL & VALVE SPRING
REMOVAL
Preparation
·Disconnect battery ground cable.
1. Air cleaner Cover & Air Duct (4JG2-T Only)
·Disconnect air hoses.
·Re

Page 1624 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A2 Ð 22 4JG2-NA/4JG2-TURBO ENGINE
CAUTION
·Put removed valve springs in the order of cylinder
number.
7. Valve Stem Oil Seal
·Removal oil seal by pliers.
CAUTION
·Removed oil controller should no