Checking The Front Constant Velocity Joints; Checking The Differential Gears - Yamaha YXR70FX Service Manual

FRONT CONSTANT VELOCITY JOINTS, DIFFERENTIAL
GEAR AND DRIVE SHAFT
EBS00165
CHECKING THE FRONT CONSTANT
VELOCITY JOINTS
1. Check:
• double off-set joint spline
• ball joint spline
• shaft spline
Wear/damage → Replace.
2. Check:
• dust boots
Cracks/damage → Replace.
NOTICE
_
Always use a new boot band.
3. Check:
• balls and ball races
• inner surface of double off-set joint
Pitting/wear/damage → Replace.
EBS00166

CHECKING THE DIFFERENTIAL GEARS

1. Check:
• gear teeth
Pitting/galling/wear → Replace.
• bearing
Pitting/damage → Replace.
• oil seal
• O-ring
Damage → Replace.
2. Check:
• drive shaft splines
• differential drive pinion gear splines
Wear/damage → Replace.
• spring
Fatigue → Replace.
Move the spring up and down.
3. Check:
• drive shaft
Bends → Replace.
WARNING
_
Do not attempt to straighten a bent shaft;
this may dangerously weaken the shaft.
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