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 TM 9-2320-360-34-2
NOTE
Do steps (50) thru (54) to adjust tooth
contact pattern.
(50) Coat gear teeth of differential gear (34)
with prussian blue dye. Check for correct
pattern of rotation. If needed, remove and
adjust shims as required.
A correct
pattern is clear of toe and centers evenly
along width of face between top land and
root. Length and shape of pattern may
vary and is acceptable as long as pattern
does not run off tooth at any point.
NOTE
Any time pinion depth is changed,
backlash may change. Check and
adjust backlash as needed.
(51) Move differential gear (34) away from
pinion shaft (13) by using a thinner shim
(23) and thicker shim (8) if pattern is too
close to top of tooth.
(52) Move differential gear (34) away from
pinion shaft (13) by using thinner shim
(23) and thicker shim (8) if pattern is too
close or off tooth root.
(53) Move differential gear (34) toward pinio n
shaft (13) by using thicker shim (23) and
thinner shim (8) if pattern is too dose or off
tooth heel.
(54) Move differential gear (34) toward pinion
shaft (13) by using thicker shim (23) and
thinner shim (8) if pattern is too close to
bottom of tooth.
25-21
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