TM 9-2320-289-34
6-5.
FRONT AND REAR AXLE DIFFERENTIAL REPLACEMENT (M1009) (Con’t).
140
15.
16.
Install 2 bearing caps (3) in their original positions and install 4 bolts (4). Tighten bolts to
55 Ib.-ft. (75 N.m).
NOTE
Differential side bearings (10) are now properly preloaded. If any
adjustments are required in later procedures, ensure that preload
established in step 12 remains the same. If backlash is changed in later
steps, the total thickness of 2 shim packs does NOT change.
Mount dial indicator (14) on housing with indicator button perpendicular to tooth angle and in
line with ring gear (12) rotation. Check backlash between ring gear and drive pinion. Backlash
should be within range of 0.005-0.008 in. (0.13-0.20 mm). Check backlash at 4 different
equally spaced positions around ring gear.
Variation in the 4 readings should not exceed
0.001 in. (0.025 mm).
If variation in backlash readings exceeds 0.002 in. (0.051 mm), reposition dial indicator (14)
on housing so that indicator button contacts back of ring gear (12) and measure ring gear and
housing runout. Gear runout should not exceed 0.003 in. (0.076 mm). If runout exceeds this
limit, inspect ring gear and housing for deformation or foreign matter between housing and ring
gear.
TA50519
6-21
