TM-9-2320-279-20-2
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 2 OF 3
TM-9-2320-279-20-2 - Page 284 of 938
TM 9-2320-279-20-2
CHAPTER 12
WHEEL MAINTENANCE
Contents
Para
General.
........................................................................
12-1
Hub and Drum Assembly, Wheel Bearing, and Stud Removal/Installation, No. 1 and
No. 2 Axles . . . . . . . . . .
. . .
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12-2
Hub, Wheel Bearing, and Wear Ring Removal/Installation, No. 3 and No. 4 Axles
(Model 480) (M977, M978, M983, M985)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12-3
Rear Brakedrum Removal/lnstallation (M977, M978, M983, M985, M985E1)
. . . . . . . .
12-4
Brakedrum, Wheel Hub, Bearing, Oil Seal, and Wear Ring Removal/Installation, No. 3
and No. 4 Axles (Models 580 and 650) (M984, M984E1) . . . . . . . . . . . . . . . . . . . . . .
12-5
Wheel/Tire Assembly Repair . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12-6
Section I. INTRODUCTION
Page
12-1
12-1
12-9
12-15
12-19
12-24
12-1. GENERAL.
This chapter contains maintenance instructions for removing, servicing, and installing
the hub and drum components authorized by the Maintenance Allocation Chart (MAC) at the organizational
maintenance level. For repair procedures and equipment for HEMTT tires, refer to TM 9-2610-200-14.
Section II. HUB AND DRUM
Wheel Maintenance Instructions
12-2.
HUB AND DRUM ASSEMBLY WHEEL BEARING AND STUD
REMOVAL/INSTALLATION, No. 1 AND NO. 2 AXLES.
This task covers:
a. Removal
d. Bearing Cup, Wheel Stud, and Hub Installation
b. Inspection
e. Installation
c. Bearing Cup, Wheel Stud, and Hub Removal
f. Follow-on Maintenance.
INITIAL SETUP
Models
References
All
TM 9-214
Test Equipment
None
TM 9-2610-200-14
Special Tools
Wrench, wheel bearing 409GX
Equipment Condition
TM or Para
Condition Description
TM 9-2320-279-10 Shut off engine.
TM 9-2320-279-10 Wheel and tire removed.
Supplies
Adhesive-sealant, silicone, Item 4, Appendix C
Grease, automotive and artillery,
Item 23, Appendix C
Oil, lubricating, Item 33, Appendix C
Personnel Required
Special Environmental Conditions
None
General Safety Instructions
Do not get under vehicle unless supported
by jackstands.
MOS 63S, Heavy wheel vehicle mechanic (2)
Wheels chocked.
Change 2
12-1
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