TM 9-2320-280-34
19-3. DIFFER ENTIAL REPAIR (Con t'd)
65.
Install four guide pins in ring gear (2).
66.
Support ring gear (2) with wood blocks in press.
67.
Press differential case (3) on ring gear (2).
68.
Remove four guide pins from ring gear (2).
69.
Install ring gear (2) on differential case (3) with eight capscrews (1). Tighten capscrews (1) to
95-115 lb-ft (129-156 Nm).
70.
Install two side bearing shims (4), previously selected to remove differential case side play, side
bearing cups (5), and differential case (3) in housing (8).
71.
Install two bearing caps (6) on housing (8) with four capscrews (7). Tighten capscrews (7) to
55-70 lb-ft (75-95 Nm).
72.
Attach dial indicator to housing (8) and index indicator to read off drive side of ring gear tooth (9)
at a right angle.
NOTE
Backlash must be checked at four equally spaced points on ring
gear and must not vary more than 0.002 in. (0.50 mm) between
four points checked.
73.
Move ring gear (2) back and forth while holding pinion yoke (10) stationary. Note backlash
registered on indicator.
74.
Ring gear backlash should be 0.005-0.009 in. (0.12-0.22 mm) with 0.008 in. (0.20 mm) desired.
If backlash must be adjusted, perform steps 75 through 78, if not go to step 79.
NOTE
Tag shims and bearing cups for assembly.
75.
Remove four capscrews (7), two bearing caps (6), bearing cups (5), shims (4), and differential case (3)
from housing (8).
NOTE
The following example will explain the procedure for adjusting
backlash: If side play was removed using 0.090 in. (2.28 mm)
shims on each side totaling 0.180 in. (4.57 mm) and backlash,
when checked, is found to be 0.011 in. (0.27 mm), add 0.004 in.
(0.10 mm) to shim on ring gear side and subtract 0.004 in. (0.10
mm) from shim on opposite side to correct backlash. This will
result in 0.094 in. (2.38 mm) shim on ring gear side and 0.086 in.
(2.18 mm) shim on other side. Backlash will be approximately
0.007 to 0.008 in. (0.17 to 0.20 mm). "Total shim thickness"
remains 0.180 in. (4.57 mm).
76.
To increase backlash, install thinner shim (4) on ring gear side and thicker shim (4) on opposite side.
To decrease backlash, install thicker shim (4) on ring gear side and thinner shim (4) on opposite side.
Do not change "total shim thickness".
77.
Install two shims (4), bearing cups (5), differential case (3), and two bearing caps (6) on housing (8)
with four capscrews (7). Tighten capscrews (7) to 87 lb-ft (118 Nm).
78.
Mount dial indicator and recheck backlash. If necessary, repeat steps 76 through 78.
NOTE
Tag shims and bearing cups for assembly.
79.
Remove four capscrews (7), two bearing caps (6), bearing cups (5), shims (4), and differential case (3)
from housing (8).
Change 1
