REMOVAL - TM-10-3930-607-150155

DRIVE AXLE

A third bearing takes the radial thrust; this bearing is

located opposite the pinion teeth, next to the pinion. A

common cup is shared by the tapered bearings; running

clearance is maintained by a spacer between the

bearings. The cup, spacer and bearings are select fit,

serviced as an assembly and located on the parking

brake end of the pinion shaft.

An internal reduction gear is located on each end of the

drive axle. Each of these consists of an internal ring

gear, two tapered bearings and a straight spur pinion

gear. The internal gear rotates on the two bearings and

is supported by a spindle bolted to the axle housing.

Each pinion is integral with an axle. This component is

supported at the gear end by a ball bearing retained by

a collar. The opposite end is splined to the axle side

gear in the differential.

Studs, nuts and tapered dowels secure the wheels to

Figure 1.

the internal gear. The entire reduction gear is enclosed

by a housing which is attached to the axle housing and

supports the service brake assemblies.

DRIVE AXLE

Oil, common with the differential, lubricates the

reduction gear assembly. A seal pressed into the outer

A. GENERAL (Fig. 1)

end of the housing and a cap pressed into the outer end

of the internal gear, prevents leakage in these areas.

The drive axle consists of an automotive type

differential and housing, internal reduction gears and

CAUTION:

housings, axles and housings and brake assemblies.

It is important that the internal gear

Although the service brakes area attached to the drive

housing be drained of flushing oil

axle these are covered in the brake section.

after flushing the drive axle. This is

accomplished by removing the 12

Lubricating oils of the drive axle and powershift

capscrews around the internal gear

transmission are of different types. Two seals around

housing and pulling the housing

the differential pinion shaft prevent the mixing of the two

loose to allow the oil to drain.

oils.

Extensive

damage

the

transmission and differential may

The oil level plug is located on the differential housing.

result if this precaution is not taken.

The filler opening is located above the level plug on the

differential housing. The drain plug is located on the

bottom of the differential.

B. REMOVAL

The pinion shaft of the powershift model is supported by

1. Remove load arms. Remove pressure and

two tapered roller bearings which take the forward and

bleed back hoses, attach hoist to top of upright, remove

reverse thrusts.

the two upright mounting caps, the two tilt cylinder rod

end pins and lift upright from truck.

B-119