TM-9-2320-280-20-2
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 2 OF 3
JANUARY 1996
TM-9-2320-280-20-2 - Page 670 of 951
NOTE
Have drainage container ready to catch oil.
1.
Remove drainplug (4), and drain geared hub (1). Install drainplug (4) into geared hub (1). Tighten
drainplug (4) to 8-13 lb-ft (11-18 N
•
m).
2.
Remove four capscrews (7), washers (6), and steering arm cover (5) from geared hub (1).
NOTE
For new configuration, two locktabs must be bent away from
retaining nut for removal.
3.
Bend locktab (12) on key washer (9) away from retaining nut (10).
4.
Using retaining nut wrench, remove retaining nut (10) and key washer (9) from spindle (8). Discard
key washer (9).
NOTE
If four-slotted retaining nut TN-07 is present, it is recommended
to replace it with eight-slotted retaining nut 12342680.
5.
Apply grease to face of retaining nut (10) and install key washer (9) and retaining nut (10) on
spindle (8).
6.
Using retaining nut wrench, tighten retaining nut (10) to 35-45 lb-ft (47-61 N
•
m).
7.
Rotate spindle (8) five full rotations clockwise and five full rotations counter clockwise to properly
seat bearings.
8.
Loosen retaining nut (10) until it is finger tight, then retighten nut to 23-27 lb-ft (31-37 N
•
m).
WARNING
Ensure locktab on key washer is bent completely into slot on
retaining nut. Eight-slotted retaining nut provides additional
security by enabling two locktabs on key washer to be bent into
slots on retaining nut. Failure to do this may cause injury to
personnel or damage to equipment.
NOTE
• For new configuration, two locktabs must be bent into slots on
retaining nut.
• It may be
necessary
to slightly loosen or tighten retaining nut to
gain proper alignment with locktabs.
9.
Determine which locktab (12) on key washer (9) aligns with slot (11) in retaining nut (10). Bend
locktab (12) into slot (11) on retaining nut (10).
Adjustment
6-14. GEARED HUB SPINDLE BEARING ADJUSTMENT
This task covers:
Adjustment
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Special Tools
Wrench (Appendix B, Item 127)
Materials/Parts
Key washer (Appendix G, Item 65)
Sealer (Appendix C, Item 39)
Sealing compound (Appendix C, Item 45)
Grease (Appendix C, Item 22)
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
Wheel removed (para. 8-3).
General Safety Instructions
Ensure locktab on key washer is bent completely
into slot on retaining nut.
TM 9-2320-280-20-2
6-38
Change 3
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