Mainshaft Assembly
Inspection
1. Inspect the gear surface and bearing surface for
wear and damage, then measure the mainshaft at
points A, B, and C.
Standard:
A (Ball bearing surface): 32.002—32.018 mm
(1.2599-1.2605 in)
B (Needle bearing surface): 42.984—43.000 mm
(1.6923-1.6929 in)
C (Ball bearing surface): 30.984-31.000 mm
(1.2198-1.2205 in)
Service limit:
A: 31.950 mm (1.2579 in)
B: 42.930 mm (1.6902 in)
C: 30.930 mm (1.2177 in)
Inspect oil passages for clogging.
Inspect for wear and damage.
If any part of the mainshaft is less than the service
limit, replace it with a new one.
Inspection
1. Inspect the gear surface and bearing surface for
wear and damage, then measure the mainshaft at
points A, B, and C.
Standard:
A (Ball bearing surface): 32.002—32.018 mm
(1.2599-1.2605 in)
B (Needle bearing surface): 42.984—43.000 mm
(1.6923-1.6929 in)
C (Ball bearing surface): 30.984-31.000 mm
(1.2198-1.2205 in)
Service limit:
A: 31.950 mm (1.2579 in)
B: 42.930 mm (1.6902 in)
C: 30.930 mm (1.2177 in)
Inspect oil passages for clogging.
Inspect for wear and damage.
If any part of the mainshaft is less than the service
limit, replace it with a new one.
2. Inspect for runout.
Standard: 0.02 mm (0.001 in) max.
Service Limit: 0.05 mm (0.002 in)
NOTE: Support the mainshaft at both ends as
shown.
Rotate two complete revolutions.
If the runout exceeds the service limit, replace the
mainshaft with a new one.