Adjusting The Ring Gear Backlash - Yamaha VMX12 2001 Service Manual

SHAFT DRIVE
EAS00720

ADJUSTING THE RING GEAR BACKLASH

1. Remove:
• ring gear bearing housing nuts
• ring gear bearing housing bolts
NOTE:
@
Working in a crisscross pattern, loosen each
nut 1/4 of a turn. After all of the nuts are fully
loosened, remove them and the bolts.
@
2. Remove:
• ring gear bearing housing 1
• dust cover 2
• ring gear 3
• ring gear shim(s) 4
• thrust washer 5
3. Adjust:
• ring gear backlash
a. Select the suitable shim(s) and thrust
washer with the following chart.
Thinner shim
Thicker shim
b. If it is necessary to increase the ring gear
backlash by more than 0.2 mm, reduce the
thrust washer thickness by 0.2 mm for every
0.2 mm increase of ring gear shim thick-
ness.
c. If it is necessary to reduce the ring gear
backlash by more than 0.2 mm, increase
the thrust washer thickness by 0.2 mm for
every 0.2 mm decrease of ring gear shim
thickness.
Ring gear shims
Thickness (mm)
Thrust washers
Thickness (mm)
7 - 99
CHAS
Ring gear backlash is
increased.
Ring gear backlash is
decreased.
0.25 0.30 0.40 0.50
1.2 1.4 1.6 1.8 2.0