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TM 9-2320-364-34-4
25-196
25-29. AXLE NO. 4 DIFFERENTIAL ASSEMBLY REPAIR (CONT).
Prussian blue dye is poisonous
and can burn skin on contact.
Over exposure to dye can cause
heart and skin problems,
dizziness, and unconsciousness.
NOTE
Steps (38) through (44) adjusts
tooth contact pattern.
(38)
Coat bevels of differential gear (2) with
Prussian blue dye.
(39)
Turn differential gear (2) back and forth to
set dye pattern. Check tooth contact
pattern.
NOTE
To obtain correct tooth
contact pattern two
considerations must be
observed: One is the
lengthwise contact pattern
that is in length direction of
teeth, the other is face width
pattern that is in height
direction of teeth.
A correct gear pattern for a
used pinion shaft and
differential and bevel gear is
clear of the toe and centers
evenly along the face of
gear tooth, but can be any
length and shape and is
acceptable as long as pattern
does not run off gear tooth
at any point.
(40)
If tooth contact pattern is like pattern A, do
not adjust tooth contact pattern. Go on to
Step (43).
(41)
If tooth contact pattern is like pattern B,
add backlash. Refer to Step (30).
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