Checking The Differential Gear Operation - Yamaha YFM660FS Grizzly 4x4 Supplementary Service Manual

FRONT CONSTANT VELOCITY JOINTS AND
DIFFERENTIAL GEAR
CHECKING THE DIFFERENTIAL GEAR
OPERATION
1.Block the rear wheels, and elevate the front
wheels by placing a suitable stand under the
frame.
2.Remove the wheel cap and cotter pin from
the axle nut (right or left).
3.Measure the starting torque of the front
wheel (i.e., differential gear preload) with the
torque wrench.
NOTE:
Repeat this step several times to obtain an
G
average figure.
During this test, the other front wheel will turn
G
in the opposite direction.
Front wheel starting torque:
(differential gear preload):
New unit:
17 ~ 25 Nm
(1.7 ~ 2.5 m • kg, 12 ~ 18 ft • lb)
Minimum:
10 Nm (1.0 m • kg, 7.2 ft • lb)
4.Out of specification → Replace the differen-
tial gear assembly.
5.Within specification → Install the new cotter
pin and wheel cap.
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DRIV