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 TM 9-2320-269-34-1
REAR-REAR AXLE DIFFERENTIAL - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
ASSEMBLY - CONTINUED
86.
Continued
c.
With adjustments made correctly,
tooth contact should be similar to
that shown in illustration A below.
The contact area starts near the toe
of the gear and extends about 62.5
percent of the tooth length. When
checking paint impressions on gear
teeth under heavy load, the impres-
sions will spread longer than patterns
made from bench test. This is normal.
Mounted ring gear should show a
bearing toward the toe (small) end of
the tooth, never at heel (large) end.
It is Impossible to make gears and
gear mounting so rigid that no de-
flection will occur when full torque
is applied. This deflection causes the
bearing to approach the heel of the
tooth, and the result is a concentra-
tion of load on the top corner of the
heel and the tooth will break.
d.
If paint impressions are not correct,
use examples of tooth contact im-
pression shown below and make neces-
sary corrections.
TA238569
2-928
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