Checking The Differential Gear; Assembling The Front Constant Velocity Joints - Yamaha YFM400FAR Service Manual

FRONT CONSTANT VELOCITY JOINTS AND
DIFFERENTIAL GEAR

CHECKING THE DIFFERENTIAL GEAR

1.Check:
Gear teeth
G
Pitting/galling/wear → Replace drive pinion
gear and differential gear assembly 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.
ASSEMBLING THE FRONT CONSTANT
VELOCITY JOINTS
1.Apply:
Molybdenum disulfide grease
G
(into the ball joint assembly)
NOTE:
Molybdenum disulfide grease is included in the
repair kit.
2.Install:
Dust boots 1
G
Dust boot bands 2, 3
G
*****************************************************
Installation steps:
G
Apply molybdenum disulfide grease into the
dust boots.
Molybdenum disulfide grease:
40 g (1.4 oz) per dust boot
7 - 10
DRIV
New