1998 ISUZU TROOPER Service Repair Manual

Page 1585 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 35
6. Piston Ring
Remove the piston rings with a piston ring expander.
Arrange the removed piston rings in the cylinder
number order.
7. Piston Pin Snap Ring
·Use a pair of pl

Page 1586 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 36 ENGINE MECHANICAL
Piston rings
Any worn or damaged part discovered during engine
overhaul must replaced with a new one.
1. Ring end gap measurement
·Insert the piston ring into the bore. Gra

Page 1587 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 37
·Push the ring by the piston, at a right angle to the
wall, into the point at which the cylinder bore
diameter is the smallest.
·Measure the ring end gap.
Standard
Compres

Page 1588 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 38 ENGINE MECHANICAL
NOTE:
Align the bushing with the connecting rod oil port.
After installing a new bushing, finish the bushing bore
with a pin hole grinder. 3. Insert the piston pin into the

Page 1589 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 39
3. Measure the oil clearance between the connecting
rod and the crankshaft by:
1) Remove the connecting rod cap nuts and the rod
caps.
Arrange the removed rod caps in the cy

Page 1590 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 40 ENGINE MECHANICAL
6. Piston Ring
·Install the piston rings with the piston ring expander.
The compression ring must be set with the 1N, 2N
mark facing up.
·Discrimination mark is painted as

Page 1591 of 3573

ISUZU TROOPER 1998  Service Repair Manual ENGINE MECHANICAL 6A Ð 41
5. Piston and Connecting Rod
·Apply engine oil to the cylinder bores, the
connecting rod bearings and the crankshaft pins.
·Check to see that the piston ring end gaps are

Page 1592 of 3573

ISUZU TROOPER 1998  Service Repair Manual 6A Ð 42 ENGINE MECHANICAL
CYLINDER BLOCK
DISASSEMBLY
1. Cylinder Head Assembly
·Refer to ÒCylinder headÓ in Section 6A2.
2. Cylinder Head Gasket
3. Flywheel
4. Cylinder Block Rear Plate
5. Cranksh