b. Remove screws (8) and washers (9) securing
lubrication fittings (58) and (59).
planetary cover (10). Remove cover (10) and packing
n. Remove brake camshaft (60) and thrust washer
(11). Remove relief valve (12) and filler plug (13) from
(61). Drive bushing (62) from spider.
o. Remove bolts (63) and lock washers (64). Remove
c. Remove bolts (14) and lock washers (15) securing
spindle (65), bushing (66) and seal (67)
the planetary carrier. Install three mounting bolts (14)
p. Remove screws (68), lock washers (69) and air
in puller holes provided to pull planetary carrier from
chamber bracket (70). Remove lubrication fitting (71),
the hub assembly. Remove planetary as an assembly.
shims (72) and trunnion (73).
Remove packing (16) from the assembly.
q. Support weight of spindle support (81) with a
d. Remove sun gear retaining snap ring (17). Using
hoist. Remove trunnion attaching screws (74), bolts
a suitable puller, remove sun gear (18) and thrust
(75) and lock washers (76) and (7). Remove lubrication
washer (19). Straighten tabs on lock nut (20) and
fitting (78). Using two puller bolts, pull trunnion (79)
remove spindle nuts (21) and lock nut (20).
and shims (80) from spindle support (81). Remove spin-
e. Place planetary carrier assembly in a press, gear
dle support (81) from the axle housing.
side up and press out pinion shaft (22). Catch lock balls
r. Remove U-joint bolts (82) and coupling (83).
(23) as the shafts are pressed out. Carefully remove
Remove assembled U-joint and wheel end axle shaft.
planetary gears (24), thrust washers (25), pinion rollers
Remove lubrication fitting (84), spider and bearing (85)
(26) and spacers (27), from planetary carrier (28).
and grease seal (86). Remove wheel end axle shaft (87).
f. Support the weight of the brake drum and hub as-
s. Remove bearing retainer screws (88) and lock
sembly with a hoist. Remove internal ring gear (29)
washers (89). Remove assembled differential end axle
and hub (30) from the spindle assembly. It may be
shaft, bearing, retainer, seal and collar from the axle
necessary to use pry bars through the holes provided in
housing. Remove collar (90), bearing (91), oil seal (92),
bearing retainer (93) and axle shaft (94). Disassemble
g. If replacement of internal ring gear is necessary,
the opposite side of the axle in the same manner.
remove screws (31) and plate retainers (32). Lift hub
t. Support weight of the differential with a hoist
(30) from ring gear (29). If bearing cone (33) is
Remove nuts (95), lock washers (96) studs (97) and (98),
damaged, drive cone (33) and cup (34) from hub (30).
and dowel (99). Carefully remove the differential from
h. Using a suitable hoist and chain, pull the brake
the housing lightly with a soft mallet to break the seal.
drum and hub assembly straight out from the axle.
Refer to paragraph 16-14 for disassembly procedures
for the differentials.
u. Remove breather plug (100), filler plug (101), and
Be sure brake shoes are in the fully released
breather (102) from axle housing (103).
v. Remove bearings (104) and (105), and retainers
i. Match mark hub (44) and drum (37) to assure
(106) and (107).
proper reassembly. Remove bolts (35) and washers (36)
w. For the rear axle only, remove roll pin (108), lock
securing brake drum to hub. Remove oil catcher (38)
pin (109), pin (110), snap ring (111), lock arm pin (112)
and pry out seal (39).
and lock arm (113).
j. Lift out bearing cone (40) If replacement of bear-
ing cups (41) is necessary, drive the cups out using a
soft drift. Take care to avid damage to the bearing
16-9. Cleaning, Inspection and Repair
bores. Remove nuts 42) and wheel studs (43) from hub
a. Clean all metal parts in cleaning solvent, Federal
Specification P-D-680, or equivalent, before inspect-
If any wheel studs are damaged, all must be
b. Replace all seals and packing.
c. Inspect all rollers, cages and cups for wear, chip-
k. Remove brake return spring (45). Remove anchor
ping or nicks. Do not replace a bearing cone or cup in-
screws (46), lock wire (4 screw (48), washer (49), and
dividually without replacing the mating cup or cone.
anchor pin (50), Remove brake shoe assembly.
After inspection, dip bearings in light oil and wrap in
clean, lintless cloth or paper.
d. If possible, check all gears and shafts using the
Support brake shoes or they may pivot about
magnaflux process. Examine teeth and ground and
the anchor pin when the spring is released.
l. Remove cotter pin (51), pin (52), nuts (53) and lock polished surfaces for wear, pitting, chipping, nicks,
cracks and scores. Replace all gears having cracked or
washers (54) securing air chamber to air chamber
chipped teeth. Small nicks may be removed with a
bracket. Remove air chamber.
suitable hone. Inspect shafts to assure that they are not
m. Remove slack adjuster retaining ring (55) and re-
sprung, bent, or have twisted splines, and that shafts
taining washer (56). Using a plastic hammer, drive
slack adjuster (57) from the brake camshaft. Remove