Differential Gear Operation Check - Yamaha YFM400FWA 2000 5GH3-AE1 Service Manual

CONSTANT VELOCITY JOINTS AND DIFFERENTIAL GEAR
Ring gear shim (left and right)
Thickness (mm)

DIFFERENTIAL GEAR OPERATION CHECK

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
average figure.
During this test, the other front wheel will
turn 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 differ-
ential gear assembly.
5.Within specification → Install the new cot-
ter pin and wheel cap.
7 - 13
DRIV
0.1 1.0
0.2 1.5
0.3 2.0
0.4 2.5
0.5