TM 9-2320-260-34-1
10-8. DIFFERENTIAL AND DIFFERENTIAL CARRIER REPAIR (Contd)
NOTE
Replacement of entire differential gear assembly is required if
either helical ring gear, spider, spider gears, bevel gears, and
thrust washer fail inspection.
5.
Inspect two bearings (2) and races (1). Refer to TM 9-214. Replace bearing (2) and race (1) as a set
if either part fails inspection.
6.
Inspect two differential gear housings (4) for chips, burrs, cracks, pitting, scoring, and breaks. Repair
minor damage, refer to para. 2-10. Replace entire differential gear assembly if differential gear
housings (4) are damaged.
7.
Measure inside diameter of bearing races (5) and outside diameter of differential gear housing
hubs (3). The difference between measurements, press fit, must be within 0.0015-0.0035 in.
(0.0381-0.0889 mm). Replace entire differential gear assembly if press fit is not within limits.
Inspect four thrust washers (12), bevel spider gears (11), two thrust washers (6), bevel side gears (7),
8.
spider (9), and helical ring gear (8) for cracks, breaks, chips, burrs, scoring, and pitting. Repair minor
damage, refer to para. 2-10. Replace entire differential gear assembly if either part fails inspection.
9.
Measure outside diameter of four spider arms (10). Measurement should be 1.122-1.123 in.
(28.50-28.52 mm). Replace entire differential gear assembly if spider arm(s) (10) are not within
limits.
10.
Measure inside diameter of four bevel spider gears (11). Measurement should be 1.128-1.130 in.
(28.65-28.70 mm). Replace entire differential gear assembly if bevel spider gear(s) (11) are not within
11.
Inspect two bearings (19) and races (18). Refer to TM 9-214. Replace bearing ( 19) and race (18) as
a set if either part fails inspection.
12.
Inspect bevel ring gear (13), sleeve (15), spacer (16), and helical pinion gear (17) for chips, breaks,
cracks, burrs, nicks, and scores. Repair minor damage, refer to para. 2-10. Replace bevel ring
gear (13), sleeve (15), spacer (16), and helical pinion gear (17) if damaged.
13.
Measure inside diameter of bearing races (20) and outside diameter of pinion gear shaft (2 1). The
difference between measurements, press fit, must be within 0.0000-0.0015 in. (0.0000-0.0381 mm).
Replace helical pinion gear (17) and bearings(s) (19) if press fit is not within limits.
Inspect bearing (14). Refer to TM 9-214. Replace bearing (14) if damaged.
14.
15.
Measure outside diameter of bevel ring gear hub (13) and inside diameter of bearing race (22). The
difference between measurements, press fit, must be within 0.0006-0.0011 in. (0.015-0.028 mm).
Replace bevel ring gear (13) and bearing (14) if press fit is not within limits.
Measure outside diameter of bearing (14) and inside diameter of spacer (15). The difference between
16.
measurements, press fit, must be within 0.0030-0.0058 in. (0.076-0.147 mm). Replace bearing (14)
and sleeve (15) if press fit is not within limits.
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