Isuzu 4ja1, Workshop Manual

Page: 129 / 564

ENGINE MECHANICAL 6A – 107
RTW36ASH002001
11. Piston and Connecting Rod with Upper Bearing
12. Connecting Rod Bearing Cap with Lower Bearing
1. Apply a coat of engine oil to the circumference of each
piston ring and piston.
2. Position the piston ring gaps as shown in the
illustration.
1. Oil ring
2. 2nd compression ring
3. 1st compression ring
3. Apply a coat of molybdenum disulfide grease to the two
piston skirts.
This will facilitate smooth break-in when the engine is
first started after reassembly.
4. Apply a coat of engine oil to the upper bearing
surfaces.
5. Apply a coat of engine oil to the cylinder wall.
6. Position the piston head front mark so that it is facing
the front of the engine.
7. Use the piston ring compressor to compress the piston
rings.
Piston Ring Compressor: 5-8840-9018-0
8. Use a hammer grip to push the piston in until the
connecting rod makes contact with the crankpin.
At the same time, rotate the crankshaft until the
crankpin is at BDC.
9. Align the bearing cap cylinder number marks and the
connecting rod cylinder number marks.
The cylinder number marks must be turned toward the
exhaust manifold.
015LX096
015R100007
015R100006