Inspect the gear and bearing contact areas for wear and damage, then measure the mainshaft at points A, B, C, D, and E. If any part of the mainshaft is less than the service limit, replace it.

A Ball Bearing Contact Area (Transmission   Housing Side):
	27.987−28.000 mm (1.1019−1.1024 in.)
B Distance Collar Contact Area:
	31.984−32.000 mm (1.2592−1.2598 in.)
C Needle Bearing Contact Area:
	38.984−39.000 mm (1.5348−1.5354 in.)
D Ball Bearing Contact Area (Clutch Housing Side):
	27.977−27.990 mm (1.1015−1.1020 in.)
E Bushing Contact Area:
	20.80−20.85 mm (0.819−0.821 in.)
Service Limit:
A:	27.93 mm (1.100 in.)
B:	31.93 mm (1.257 in.)
C:	38.93 mm (1.533 in.)
D:	27.92 mm (1.099 in.)
E:	20.75 mm (0.817 in.)

Inspect the runout by supporting both ends of the mainshaft. Then rotate the mainshaft two complete turns while measuring with a dial gauge. If the runout is more than the service limit, replace the mainshaft.

Standard:	0.02 mm (0.001 in.) max.
Service Limit:	0.05 mm (0.002 in.)