Section 4
Assembly and Installation
Maintenance Manual MM-0230 Copyright 2002
Issued 07-02 ArvinMeritor, Inc. Page 25
A high contact pattern indicates that the drive
pinion was not installed deep enough into the
carrier. A low contact pattern indicates that the
drive pinion was installed too deep in the
carrier.
O If the contact patterns require adjustment:
Continue by following Step 5 to move the
contact patterns between the top and
bottom of the gear teeth.
O If the contact patterns are in the center
of the gear teeth: Continue by following
Step 6.
5. Adjust the position of the drive pinion in the
carrier to move the contact patterns between
the top and bottom of the gear teeth. Use the
following procedure.
A. Disassemble the yoke, pinion cage and the
drive pinion. Refer to Section 2.
B. Remove the inner bearing cone from the
drive pinion. Refer to Section 2.
C. Change the bearing shim.
O To correct a high contact pattern,
Figure 4.26: Replace the bearing shim
with a thicker shim.
O To correct a low contact pattern,
Figure 4.27: Replace the bearing shim
with a thinner shim.
D. Install the inner bearing cone onto the
drive pinion. Install the drive pinion into
the carrier. Refer to the appropriate
procedures in this section.
E. Repeat Steps 2-5 until the contact patterns
are in the center between the top and
bottom of the gear teeth.
Figure 4.25
1 GOOD HAND-ROLLED PATTERN
Figure 4.26
1 HIGH PATTERN
Figure 4.27
1 LOW PATTERN
Figure 4.28
1 GOOD PATTERN IN OPERATION — GENEROID GEARS
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