1998 ISUZU TROOPER Service Repair Manual

Page 1025 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A±69
ENGINE MECHANICAL
Crankshaft
Crankshaft and Associated Parts
013RW009
Legend
(1) Cylinder Head Assembly
(2) Crankcase with Oil Pan
(3) Oil Pipe and O-Ring
(4) Oil Strainer and O-Ring
(5) Oil Pu

Page 1026 of 3573

ISUZU TROOPER 1998  Service Repair Manual 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. Re

Page 1027 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A±71
ENGINE MECHANICAL
NOTE: Do not apply engine oil to the crank case side
bolts.
Main bearing cap bolts.
Torque: 39 N´m (4.0 Kg´m/29 lb ft)
Oil gallery fixing bolts.
Torque:
1st step: 29 N´m (3

Page 1028 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A±72
ENGINE MECHANICAL
2. Measure the diameter and the uneven wear of main
journal and crank pin. If the crankshaft wear exceeds
the specified limit, crankshaft must be replaced.
Main journal diamet

Page 1029 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A±73
ENGINE MECHANICAL
1 Size
MarkMain Bearing
Bore DiameterCrank Shaft Main
Journal Diameter2 Size
Mark
Crank Shaft
Bearing
Size Mark
(Upper
Side)Crank Shaft 
Bearing
Size Mark
(Lower
Side)
Oil Cle

Page 1030 of 3573

ISUZU TROOPER 1998  Service Repair Manual 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.

Page 1031 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A±75
ENGINE MECHANICAL
4. Piston and connecting rod assembly (8)
Apply engine oil to the cylinder bores, the
connecting rod bearings and the crankshaft pins.
Check to see that the piston ring end g

Page 1032 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A±76
ENGINE MECHANICAL
012RS001
7. Install oil pump assembly (5), refer to ªOil pumpº in
this manual.
8. Install oil strainer and O-ring (4).
9. Install oil pipe and O-ring (3) and tighten the bol