Contents: Verification ⇊ Ovality and taper ⇊
Clean the oil passages on the crankshaft using pipe cleaner and a suitable brush.
Check the keyway and threads.
Verification
Measure the runout of all main journals and ensure that the crankshaft is not bent.
The difference between the measurements on each journal must not exceed the wear limit.
Max crankshaft runout:
- Standard (new): 0.03 mm
- Limit: 0.04 mm
Ovality and taper
Measure the out-of-roundness at two places in the center of each crankpin and main journal.
The difference between the measurements on each journal must not exceed the wear limit.
Cervical ovality:
- Standard (new): max 0.0025mm
- Limit: 0.005 mm
Measure the taper on the edges of each crankpin and main journal.
The difference between the measurements on each journal must not exceed the wear limit.
Neck taper:
- Standard (new): max 0.0025mm
- Limit: 0.005 mm