Isuzu A-4BG1 Workshop Manual page 104

I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I II II I I I I I II II II II II I I I I I I I I I
5-12 ENGINE ASSEMBLY Ill
Piston ring compressor
Front
mark
Cyiinder
number
0 1
r-l Wb
11. Piston and Connecting Rod
Position the piston ring gaps as shown in the illus-
tration.
1) Set the piston ring gaps as shown in the illustra-
tion.
2) Lubricate the piston, the piston rings, and the
connecting rod bearings with engine oil.
3) Position the piston front mark towards the front
of the engine.
4) Use the piston ring compressor to compress the
piston rings.
Piston Ring Compressor: 9-8522-1251-o
5) Use a hammer grip to push the piston in until it
makes contact with the crankpin.
At the same time, rotate the crankshaft until the
crankpin reaches its highest point.
6) Set the bearing cap cylinder number marks and
the connecting rod cylinder number marks.
The marks must be facing the exhaust manifold.
7
a
) Lubricate the connecting rod cap bolt threads
and setting fases with Mos grease.
:) Use the angular tightening method to tighten
the connecting rod cap bolts to the specified
torque.
kg*m (lb.ft)
I
1st step
2nd step
Connecting Rod Bolt Torque
and Angle
4 / 60".90" 1
(28.9)
12. Oil Pump and Coupling
I) Lubricate the oil pump with the specified grade
of engine oil.