Checking The Pinion Gears - Yamaha 2004 Rhino 660 YXR660FAS Service Manual

MIDDLE GEAR
6. Remove:
• drive shaft coupling
• oil seal 1
• bearing retainer 2
• bearing
NOTE:
Attach the ring nut wrench 3.
Ring nut wrench
P/N. YM-38404, 90890-01430
CAUTION:
The middle driven shaft bearing retainer
has left-handed threads. To loosen the
retainer, turn it clockwise.
7. Remove:
• middle driven shaft 1
(with bearing)

CHECKING THE PINION GEARS

1. Check:
• gear teeth (drive pinion gear) 1
• gear teeth (driven pinion gear) 2
Pitting/galling/wear → Replace.
2. Check:
• O-ring
Damage → Replace.
• bearings
Pitting/damage → Replace.
3. Check:
• universal joint movement
Roughness → Replace universal joint.
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ENG