ASSEMBLY - CONTINUED - TM-9-2320-269-34-10887

TM 9-2320-269-34-1

FORWARD-REAR AXLE DIFFERENTIAL - CONTINUED

ACTION

LOCATION

ITEM

REMARKS

ASSEMBLY - CONTINUED

93.

Continued

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 impressions 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 deflection will occur when full

torque Is applied. This deflection causes the

bearing to approach the heel of the tooth, and

the result is a concentration of load on the

top corner of the heel, and the tooth will

break.

If paint impressions are not correct, use examples of

tooth contact impression shown below, and make

necessary corrections.

2-870