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3. ADJUSTING TOOTH CONTACT PATTERN OF THE GEARSET
Always check tooth contact pattern on the
drive side of the gear teeth.
1)
Apply marking compound to approximately
12 teeth of the ring gear.
2)
Rotate ring gear forward and backward so
that the 12 marked teeth go past the drive
pinion six times to get a good contact
pattern.
3)
Compare the contact patterns.
In new gearsets, a good contact pattern is
toward the toe of the tooth, and centered
between the top and bottom of the tooth.
In used gearsets, a good contact pattern fills
approximately the full length of the tooth.
The top of the pattern is near the top of the
tooth. The location should match the wear
pattern on the tooth.
If the contact patterns require adjustment
along the width of tooth(top/bottom), follow
steps 4)-5).
If the contact patterns requires adjustment
along the length of tooth(toe/heel), follow
step 6)-7).
HEEL
BOTTOM
DRIVE SIDE
(CONVEX)
GOOD HAND-ROLLED PATTERN
3-149
TOP
TOE
HIGH PATTERN
D507AX57
D507AX58
D507AX59
D507AX60
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