Specifications
Assembly and Installation
60 MAINTENANCE MANUAL
4. Look at the contact patterns on the ring gear
teeth. Compare the patterns to Figure 5.51,
Figure 5.52 and Figure 5.53.
The location of a good hand-rolled contact pat-
tern for a new gear set is toward the toe of the
gear tooth and in the center between the top
and bottom of the tooth
When the differential is operated, a good pat-
tern will extend approximately the full length of
the gear tooth. The top of the pattern will be
near the top of the gear tooth. Figure5.54.
The location of a good hand-rolled contact pat-
tern for an old gear set must match the wear
pattern in the ring gear. The new contact pat-
tern will be smaller in area than the old wear
pattern.
A high contact pattern indicates that the drive
pinion was not installed deep enough. A low
contact pattern indicates that the drive pinion
was installed too deep in the differential case.
• If the contact pattern requires adjustment,
continue by following Step 5 to move the con-
tact patterns between the top and bottom of
the gear teeth.
• Ifthecontactpatternsareinthecenterofthe
gear teeth: Continue by following Step 6.
Figure 5.51
Figure 5.52
Figure 5.53
Figure5.54
GOOD HAND-ROLLED POSITION
GOOD PATTERN IN OPERATION
HIGH PATTERN
LOW PATTERN