Checking The Final Drive Gear; Replacing The Final Drive Roller Bearing - Yamaha YFM45FAT Supplementary Service Manual

REAR CONSTANT VELOCITY JOINTS, FINAL DRIVE
1
GEAR AND DRIVE SHAFT
2
2
1
– 40 –

CHECKING THE FINAL DRIVE GEAR

1. Check:
• final gear case 1
• bearing housing (ring gear) 2
Cracks/damage → Replace.
NOTE:
When the final gear case and/or the ring gear
bearing housing are replaced, be sure to
adjust the shim of the final drive pinion gear
and/or ring gear.
2. Check:
• gear teeth
Pitting/galling/wear → Replace the drive
pinion gear and ring gear as a set.
Refer to "REPLACING THE FINAL DRIVE
PINION GEAR AND BEARING".
• oil seals
• O-rings
Damage → Replace.
3. Check:
• bearings
Damage → Replace.
NOTE:
• Reusing roller bearing is acceptable, but
Yamaha recommends installing new ones.
Do not reuse oil seals.
• When the final drive pinion gear and/or ring
gear are replaced, be sure to adjust the shim
of the final drive pinion gear and/or ring gear.
REPLACING THE FINAL DRIVE ROLLER
BEARING
1. Remove:
• roller bearing 1
Use a suitable press tool 2 and an appro-
priate support for the main housing.
DRIV