TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 609 of 640
0108-3
TM 9-2330-335-14&P
0108
REMOVAL
000108
WARNING
A new orange keeper arm must be replaced if it is damaged when removed or installed in the nut. It
is recommended to replace the keeper arm each time it is removed. The original nut may be reused;
the original keeper may be reused if not damaged. Failure to comply this warning may cause injury
or death to personnel and damage to the equipment due to wheel-end loss.
CAUTION
Failure to remove the orange keeper before removing the nut will result in damaged threads to both
the nut and the axle end spindle. Over-torque of the nut will result in stripped threads.
Use a small blade screwdriver to carefully pry each keeper arm from the undercut groove in the nut and release the orange
keeper from the nut. The arms are on opposite sides of the open end of the keeper.
END OF TASK
INSTALLATION
000108
CAUTION
•
Keeper orange side must be facing out.
•
Only a small bladed screwdriver is required to move/install the orange keeper.
•
The orange keeper square tang must not bottom in the spindle square keyway.
•
No other washers or lock rings are required for this installation.
•
Orange keeper teeth must fully engage nut teeth.
1.
Thread the nut, without keeper arm, onto the axle spindle threaded end, keeper side facing out. Hand tighten nut
against outer bearing.
2.
While slowly rotating the wheel/hub, use a torque wrench and socket to torque the nut to 200 lb-ft (271 Nm). Wheel/hub
must be rotated slowly while torque is applied. This action will seat the inner and outer bearings.
3.
Using the torque wrench and socket, back off the nut until it is hand tight.
4.
While slowly rotating the wheel/hub, using the torque wrench and socket, re-torque the nut to 100 lb-ft (136 Nm). Wheel/
hub must be rotated slowly when torque is applied. This action will apply the final seat to the inner and outer bearings.
NOTE
After 1/4 back-off, nut should be movable by hand.
5.
Back nut off 1/4 turn. Refer to the chart in Step 3 of the previous page.
6.
Install the keeper, orange side facing out, by inserting the keeper square outer tab into the undercut groove on the nut
aligned with the square cut keyway groove on the spindle. Rotate the keeper into position so that the inner keeper tang
tilts into the square spindle keyway. The teeth on the keeper will engage the teeth on the nut. Do not force the keeper into
position. Force will damage the keeper. Use only a small bladed screwdriver for installation of the keeper.
7.
If the square inner tang does not line up with the spindle square keyway, back the nut off very slightly until it does (no
more than one tooth). This back-off will engage the keeper and nut teeth if this did not happen in step 6. Using a small
bladed screwdriver carefully compress and insert the keeper arms, one at a time, into the undercut groove in the nut.
Again, the orange side of the keeper MUST be facing out.
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