Checking The Constant Velocity Joint; Checking The Differential Gear - Yamaha YFM45FAR Service Manual

FRONT CONSTANT VELOCITY JOINTS AND
DIFFERENTIAL GEAR
CHECKING THE CONSTANT VELOCITY
JOINT
1.Check:
Double off-set joint spline
G
Ball joint spline
G
Shaft spline
G
Wear/damage → Replace.
2.Check:
Dust boots
G
Cracks/damage → Replace.
CAUTION:
Always use a new boot band.
3.Check:
Balls and ball races
G
Inner surface of double off-set joint
G
Pitting/wear/damage → Replace.

CHECKING THE DIFFERENTIAL GEAR

1.Check:
Gear teeth
G
Pitting/galling/wear → Replace drive pinion
gear and ring gear as a set.
Bearing
G
Pitting/damage → Replace.
Oil seal
G
O-ring
G
Damage → Replace.
2.Check:
Drive shaft splines
G
Universal joints
G
Front drive gear splines
G
Wear/damage → Replace.
Spring
G
Fatigue → Replace.
Move the spring up and down.
3.Check:
Front drive shaft
G
Bends → Replace.
WARNING
Do not attempt to straighten a bent shaft;
this may dangerously weaken the shaft.
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