TM-9-2320-279-20-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3
TM-9-2320-279-20-1 - Page 15 of 985
TECHNICAL MANUAL
No. 9-2320-279-20-1
TM 9-2320-279-20-1
HEADQUARTERS
DEPARTMENT OF THE ARMY
Washington, DC,
7 April 1987
MAINTENANCE INSTRUCTIONS
Organizational Maintenance
M977 SERIES, 8 X 8 HEAVY EXPANDED MOBILITY
TACTICAL TRUCKS (HEMTT)
MODEL
NSN
TRUCK, CARGO, WITH WINCH, M977
TRUCK, CARGO, WITHOUT WINCH, M977
TRUCK, TANK, FUEL, WITH WINCH, M978
TRUCK, TANK, FUEL, WITHOUT WINCH, M978
TRUCK, TRACTOR, WITH WINCH, WITHOUT CRANE, M983
TRUCK, TRACTOR, WITH WINCH, WITH CRANE, M983
TRUCK, WRECKER-RECOVERY, M984
TRUCK, WRECKER-RECOVERY, M984E1
TRUCK, CARGO, WITH WINCH, M985
TRUCK, CARGO, WITHOUT WINCH, M985
TRUCK, CARGO, WITH WINCH, M985E1
TRUCK, CARGO, WITHOUT WINCH, M985E1
Approved for public release; distribution is unlimited.
REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS
You can help improve this Technical Manual. If you find any mistakes or if you know of a way to improve
the procedures, please let us know. Mail a letter or your DA Form 2028 (Recommended Changes to
Publications and Blank Forms) directly to: Commander, U.S. Army Tank-automotive and Armaments
Command, ATTN: AMSTA-AC-NML, Rock Island, IL 61299-7630. You can also provide information to
TACOM via datafax or e-mail. TACOM’s datafax number is: DSN 793-0726 or (309) 782-0726. E-mail
address: amsta-ac-nml@ria-emh1.army.mil
M983 with crane and M985E1 without winch are no longer in the fleet. Ignore all references to these
vehicles. The M984E1 and M984A1 are the same vehicle. All references to M984E1 shall be interpreted as
the M984A1 model.
TABLE OF CONTENTS
Page
HOW TO USE THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii
CHAPTER 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
Section I
General Information
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
Section II
............................................
1-10
Section III
Principles of Operation
.......................................................
1-12
Change 3
i
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