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2.2.7 Crankshaft (Continued)
7
8
8
2.2.7.d Main Bearing Case Assembly
1. Remove the two main bearing case bolt s (7), and re-
move the main bearing case a ssembly being careful
with the thrust bearing and crankshaft bearing.
2. Remove the remaining main bearing cases as above.
When Reassembling
Clean the oil passages in the main bearing case.
Apply clean engine oil to the bearings.
Install the main bearing case assemblies in their original
locations. The diameters of the main bearing cases
vary. Install them in order from the gear case end
according to their markings (A,B,C).
Match the alignment numbers (1) and mark (2) on the
main bearing case.
When installing the main bearing case, face the mark
“FLYWHEEL” to the flywheel.
Install the thrust bearing with its oil groove facing (8)
outward.
Confirm that main bearing case moves smoothly after
torquing the main bearing case bolt to specification.
Tightening
Torque
Main Bearing
Case bolt
46 to 50 N
.
m
4.7to5.2kgf
.
m
34 to 37 ft--lbs
1. Alignment Number
2. Alignment Mark
3. No Mark
4. C
5. B
6. A
7. Main bearing Case Bolt
8. Oil Groove