drive out the opposite bushing and
( 1 0 ) Using a pry bar, remove oil seal wear
plate (111) from ring gear and hub
e. Final Drive Assembly.
(1) Remove the track assembly (para
(11) Tapping lightly with a blunt-nosed
drift, remove small oil seal (112),
(2) After removing outer and inner sup-
oil seal retainer (113), and complete
port brackets (42 and 51) jack up
outer ring gear bearing (114) from
the frame and remove final drive as-
the hub of ring gear and hub assem-
Note. Use a chain hoist to support the
(12) Tapping lightly with a blunt-nosed
final drive assembly.
drift, remove complete inner ring
gear bearing (116) from the hub of
(3) Remove sprocket stud nuts (88) and
ring gear and hub assembly (117).
lift out sprocket assembly (90) with
collets (89) attached.
(4) Remove hardware (93 through 97)
and bearing retainer (98) with bear-
Clean all parts with an approved cleaning
ing retainer shims (99). Tie the shims
solvent and blow dry with compressed air.
together to facilitate reassembly.
(5) Remove screws (100), dowel screws
6-94. Inspection and Repair
(101), cover plate assembly (106),
a. Inspect all parts for wear and damage,
and cover gasket (103). Discard the
and replace if necessary.
b. Inspect shaft and spacer housing (110,
(6) Remove dust shield (104) from cover
plate assembly (106) and tap out
ing retainer (98) track idler shaft (79), track
large oil seal (105).
idler supports (67), support guide plates (63),
(7) Install a cap screw in the tapped hole
and buffer spring clamp rods (60) for cracks,
of main drive shaft pinion (109).
nicks, and burrs on machined surfaces, and for
Using a pry bar and a support block,
stripped or crossed threads. Remove all minor
remove main drive shaft pinion (109)
nicks and burrs with a fine file or handstone,
with complete inner and outer bear-
and retap or rechase all damaged threads. Re-
ings (107 and 108) from shaft and
place the parts if damage cannot be repaired.
spacer housing (110). Using a suit-
c. Inspect all gears and pinions for
able bearing puller, remove the bear-
chipped teeth, damaged bores, and excessive
ings from the pinion.
wear. Replace if in doubt as to the serviceabili-
ty of any part.
consist of two pieces each; an outer race
and an inner race with roller, which are
d. Inspect all bearings for
removable separately, but which are
and wear. Replace if unserviceable.
matched to each other and must, be kept
e. Inspect oil seals, wear plates, and oil seal
together. Do not intermix bearing races
retainers for scoring marks and excessive wear.
(8) Remove track sprocket bearing shims
Replace all unserviceable parts.
(92) from shaft and spacer housing
f. Inspect all hardware for damaged
(110). Tie the shims together to
threads. Retap or rechase threads if stripped
or crossed, or replace if unserviceable.
(9) To remove ring gear and hub assem-
bly (117) from shaft and spacer hous-
ing (110) insert pry bars under both
sides of the ring gear, and pry off
a. General. Reassemble traction unit in re-
verse of numerical sequence as illustrated on