ASSEMBLY - TM-10-3930-607-150160

DRIVE AXLE

to replace either the pinion or ring gear of the hypoid

2. Lubricate differential case inner walls and all

set, the entire gear set should be replaced.

component parts with axle lubricant. Position thrust

washer and side gear in gear and case half assembly.

Place spider with pinions and thrust washers in position.

6. Inspect

the

differential

assembly

for

the

Then install remaining side gear and thrust washer.

following:

3. Align mating marks, position component case

a. Pitted, scored or worn thrust surfaces of

half and draw assembly together with four capscrews

differential case halves, thrust washers,

equally spaced. Check assembly for free rotation of

spider trunnions, and differential gears.

differential gears and correct if necessary. Install

Thrust washers must be replaced in sets.

remaining capscrews.

The use of combination of used and new

washers will result in premature failure.

4. If bearings are to be replaced, press them

squarely and firmly on differential case halves.

b. Wear or damage to the differential pinions

and side gear teeth.

5. Assemble remaining parts in the reverse order

in which they were removed, making the necessary

7. Inspect axle shaft for twisted or cracked splines

adjustments as assembly progresses.

and other signs of impeding failure.

E. ASSEMBLY

6. Heat the pinion bearing retaining collar enough

to drop into place next to the pinion bearing.

1. If ring gear was removed from case, rivet the

gear to the case half with new rivets. Rivets should not

7. Remove the plugs from the oil filler port and oil

be heated. They are upset cold. When the correct rivet

level port. (Fig. 16) Add oil

is used, the head being formed will be at least 1/8 inch

larger in diameter than the rivet. The head will then be

approximately the same height as the preformed head.

CAUTION:

Excess pressure will cause distortion

of the case holes and result in gear

run-out.

NOTE:

Tonnage required for squeezing cold

rivets is charted below.

These

pressures are approximated for

annealed steel rivets and pressure

can be adjusted to suit individual

working conditions.

Diameter of Rivet

Tonnage Required

7/16"

1/2"

9/16"

5/8"

Figure 16.

B-124