ENGINE
4) Crankshaft
( A ) Flywheel Deflection and Crankshaft End Play
1. Set a dial indicator with its tip on the rear friction
face of the flywheel near the edge.
2. Turn the flywheel and measure the deflection or
the uneven wear.
3. If the measurement exceeds the allowable limit,
remove the flywheel and check the mating faces
of the crankshaft and flywheel.
4. If scored of worn excessively, regrind or replace
the flywheel.
5. Move the crankshaft with flywheel back and forth
to each end and measure the end play.
6. If the play exceeds the allowable limit, replace the
side bearing.
(B) Crankshaft Alignment
1. Support the crankshaft with V blocks on the
surface plate at its front and rear journals and set a
dial indicator with its tip on the intermediate journal.
2. Rotate the crankshaft in the V blocks and get the
misalignment(half of the measurement).
3. If the misalignment exceeds the allowable limit,
replace the crankshaft.
Allowable
0.02mm
Misalignment
limit
0.0007in.
Allowable
0.05mm
Deflection
limit
0.0020in.
Factory
0.15 to 0.31mm
spec.
0.0059 to 0.0122in.
Allowable
0.5mm
limit
0.020in.
End play
