TM 9-2320-289-34
6-16.
REAR AXLE DIFFERENTIAL REPAIR (M1009) (Con’t).
14.
1 5 .
1 6 .
17.
18.
NOTE
Perform steps 14-17 to establish correct backlash only if new camform
side gear (17) and side gear (20) were installed.
Index 1 tooth of pinion gear (18) nearest Iockscrew (9) so that it points facedown,
perpendicular to differential case (2) assembly flange.
Wedge a suitable tool between
left-hand camform side gear (17) and pinion shaft (10). Using dial indicator (25) mounted on
differential case assembly flange, check pinion gear backlash by pulling pinion gear firmly into
its seat, and rotating back and forth. Record reading.
Repeat procedure of indexing and checking backlash to other pinion gear (18). If backlash is
not within 0,010-0.018 in. (0.254-0.457 mm), change shim size on left-hand camform side
gear (17) side. The thinner the shim used, the greater the backlash reading will be.
Repeat steps 14 and 15 to measure right-hand side gear (20) to pinion gear (18) backlash.
Backlash should be 0.002-0.010 in. (0.051 -0.254 mm), If backlash is not within specification,
change shim size on right-hand side gear side. The thinner the shim used, the greater the
backlash will be.
If it was necessary to change shims, recheck thrust block (23) clearance. (See steps 6-8)
NOTE
Perform step 18 only if thrust block (23) has not been installed.
Remove Iockscrew (9) and pinion shaft (10). Discard Iockscrew. Remove 2 thrust washers
(19) and pinion gears (18). Install thrust block (23). Install 2 thrust washers and pinion gears.
Install pinion shaft and new Iockscrew.
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