TM 9-2320-280-34
19-3. DIFFERENTIAL REPAIR (Cont'd)
NOTE
If repairing P/N 12342615, perform steps 23 through 36.
23.
Using pinion setting gauge set, install block, rear pinion bearing cup, rear pinion bearing, and pilot
washer on stud and secure with block.
24.
Position stud assembly in housing (1) and install with front pinion bearing, pilot washer, and nut.
Tighten nut to 10 lb-in. (1.13 Nm). Rotate the assembly several revolutions to seat the bearings
and recheck the torque.
25.
Rotate front of housing downward 90 degrees. Assemble arbor and two discs and install in housing.
26.
Install two bearing caps (2) and four capscrews (3) in housing (1) and finger tighten capscrews (3).
27.
Position arbor on block and install dial indicator to arbor post. Preload the dial indicator until the
needle rotates approximately one full turn clockwise. Tighten the dial indicator in this position and
recheck.
28.
Rotate gauge shaft slowly back and forth until the dial indicator reads the greatest deflection. At
the point of greatest deflection, set the dial indicator to zero. Repeat the rocking action of the gauge
shaft to verify the gauge setting.
29.
After the zero setting is obtained, rotate gauge shaft until the dial indicator plunger does not touch
the block.
30.
Record the number of the dial indicator reading. Example: If the pointer moved counterclockwise
and stops between 0 and 11, add .100" to measurement for shim thickness. If the pointer moves
counterclockwise and stops between 99 and 84, correct shim thickness is indicated.
31.
This reading indicates the shim thickness that is required of a pinion that is etched with a zero (0)
on the pinion head. If the pinion being installed has a plus (+) or minus (-) etching, then an
adjustment of the shim thickness is required. Example: If a pinion is etched "+3", then .003" less
shim thickness is required. Subtract .003" from the indicator reading. If a pinion is etched "-3" then
.003" more shim thickness is required. Add .003" to the indicator reading.
32.
Remove dial indicator from arbor.
33.
Remove four capscrews (3), two bearing caps (2), discs, and arbor from housing (1).
19-16
Change 2
