DRIVE AXLE AND ADAPTER.

assembly.

(20) Disengage two plugs on wiring harness

(3) Free retaining ring (5) holding collar (4).

from receptacles connected to internal wiring of control

Slide collar down, and remove cushions (1) and sleeve

panel.

(6) on axle side coupling half (7). Remove sleeve from

(21) Unscrew conduit fitting (through which

motor side coupling half and any cushions that may

wiring harness passes) from front wall of control panel

have remained with motor when separated.

compartment. Fitting is located in lower left hand corner

(4) Remove cotter pin (3) and nut (2) from

of control panel compartment.

pinion gearshaft (20). Take coupling half from pinion

(22) Carefully withdraw wiring harness from

gearshaft and remove collar and retaining ring.

control panel compartment. Straighten out branches in

(5) Remove six screws (14) and washers

harness as required and work bulky items through holes

(15). Remove oil seal and retainer (13), thrust washers

and around corners as required. Avoid undue strain on

(16), spacers(18) and gaskets ( 17) from cage.

plugs, terminals and terminal relays.

(6) Remove double row roller bearing (19)

b. Installation. Installation of the wiring harness is

from cage. Remove retaining ring, and take pinion

essentially the reverse of the removal procedure. Plugs

gearshaft (20) with race and retaining ring from cage.

are keyed to prevent improper orientation.

After

Take single row bearing (21) from cage.

securing harness with clips and clamps, assure that

sufficient clearance is maintained between harness and

6-111. DRIVE AXLE DISASSEMBLY. Refer to figure

all moving parts. Hand form harness where required to

7-35, except where indicated, and proceed as follows:

obtain clearance. Apply silicone rubber to exposed

(1) Remove drive axle (para 6-90).

screw-type terminals on seat switch, pump motor switch

(2) Drain lubricant from axle (figure 5-1).

and on brake stoplight switch. Insulate other exposed

(3) Remove drive wheels (para 6-76).

terminals with vinyl tubing.

6-106. OVERHAUL OF MAJOR COMPONENTS AND

(4) Remove screws (44 and 45) and washers

AUXILIARIES.

(46) and remove gear case (58) with brake assembly

from axle housing (79). Remove gasket (66 and oil seal

6-107.

DRIVE AXLE AND ADAPTER.

59).

(5) Remove hub cap (52), cotter pin (53),

spindle nut (54) and washer (55) from spindle (63).

6-108. The adapter provides a gear reduction between

Take final drive gear (60), bearing cups (61) and cones

the travel motor and pinion and the drive axle pinion

and rollers (62) from spindle.

gearshaft. The gears are mounted in a gear case

(6) Remove four nuts (64) and washers (65)

having flanges for mounting the travel motor and for

holding spindle (63) to axle housing (79) and remove

mounting to the drive axle differential housing. The

spindle.

travel motor drives a bearing-mounted gear cluster

(7) Draw axle gearshaft (69) with bearing (68)

which in turn drives an input driven gear. The pinion

and collar (67) from housing. If they are to be replaced,

gearshaft is spline engaged in the input driven gear.

press off bearing and collar.

(8) Remove nuts (70) and washers (71 and

6-109. The drive axle contains a differential gear

74) from studs (73) in differential housing (94). Don't

arrangement which is driven by the adapter pinion

remove studs unless damaged. Tap axle housings (78

gearshaft. The pinion gearshaft engages a ring gear

and 79), if necessary, to free tapered dowels (72) on

secured to the differential case. The two axle housings

studs.

Separate housings and remove tapered

provide mounting for the front wheel brake assemblies.

bushings.

Many parts which comprise the drive axle can be

NOTE

removed without removal of the axle from the truck.

Differential bearing cups (80) will remain with

However, for general overhaul, the axle requires

axle housing, causing differential assembly to

removal.

drop slightly within its housing when axle

housings are removed.

6-110. ADAPTER DISASSEMBLY. Refer to figure 7-

(9) Carefully remove gaskets (81 and 82)

37 and proceed as follows:

from studs. Before discarding these gaskets, measure

(1) Remove the adapter from the truck (para

and note total gasket thickness removed at each side.

6-90).

Same thickness of new gaskets is to be used as a

(2) Remove screws (9), nuts (8) and washers

starting point in making pinion and drive gear

(11) holding gearshaft bearing cage (22) to adapter

adjustments at assembly.

housing (24).

Remove housing and gasket (23).

Measure and record gasket thickness for reference at

6-31