wsm M8540NARROW - Page 147

TRANSMISSION
M8540Narrow, M9540Narrow, WSM
N3-S39
(Continued)
• Proper Contact
More than 35 % red lead contact area on the gear tooth surface.
The center of tooth contact at 1/3 of the entire width from the
small end.
• Shallow or Heel Contact
Replace the adjusting collar (2) with thicker one to move the
spiral bevel pinion shaft backward.
And reduce the shim (4) to move the spiral bevel gear rightward.
Repeat above until the proper tooth contact and backlash are
achieved.
• Deep or Toe Contact
Replace the adjusting collar (2) with a thinner one to move the
spiral bevel pinion shaft forward.
And increase the shim (4) to move the spiral bevel gear
leftward.
Repeat above until the proper tooth contact and backlash are
achieved.
9Y1210236TRS0060US0
(1) Spiral Bevel Pinion Shaft
(2) Adjusting Collar
(3) Spiral Bevel Gear
(4) Shim
(5) Differential Case
(A) Proper Contact
(B) Shallow Contact
(C) Heel Contact
(D) Deep Contact
(E) Toe Contact
KiSC issued 07, 2013 A