Isuzu A-4JA1 Workshop Manual page 97

ENGINE ASSEMBLY ( 3 )
1
2
94
Important Operations (Reassembly Steps-1)
1. Cylinder Body
Use compressed air to thoroughly clean the inside
and outside surfaces of the cylinder body, the oil
holes, and the water jackets.
2. Tappet
1) Apply a coat of engine oil to the tappet 1 and
the cylinder body tappet insert holes 2 .
2) Locate the position mark applied at disassembly
(if the tappet is to be reused).
Note:
The tappet must be installed before the camshaft.
3. Crankshaft Upper Bearing
The crankshaft upper bearings have an oil hole and
an oil groove. The lower bearings do not.
1) Carefully wipe any foreign material from the
crankshaft upper bearing and the crankshaft
upper bearing fitting surfaces.
2) Locate the position mark applied at disassembly
if the removed crankshaft upper bearings are to
be reused.
4. Crankshaft with Crankshaft Timing Gear
Apply an ample coat of engine oil to the crankshaft
journals and the crankshaft bearing surfaces before
installing the crankshaft.
Note:
Do not apply engine oil to the bearing back faces and the
cylinder body bearing fitting surfaces.