TM-9-2320-279-10-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

OPERATOR’S MANUAL VOLUME 1 OF 2

DECEMBER 1998

CHANGE 5

TM-9-2320-279-10-1 - Page 329 of 773

TM 9-2320-279-10-1

M977 and M985 Tanker Operating Procedures

2-19. M977, M985 CRANE OPERATION (REMOTE CONTROLS) (CONT).

WARNING

Be sure there are at least two wraps of cable on hoist

drum at all times. Serious injury or death could result if

cable comes off hoist drum while lifting load.

CAUTION

Do not jerk HOIST control lever or load will bounce

causing possible damage to crane or load.

.

Do not operate crane with boom below horizontal

when there is a load on hook.

l

For M977, maximum load limit with boom length

under 9 ft (2.75 m) is 4500 lbs (2 043 kg). Maximum

load limit with boom extended over 9 ft (2.75 m) is

2500 lbs (1 135 kg). For M985 maximum load limit is

5400

lbs (2 452 kg).

l

Do not go over maximum load limit. Going over

maximum load limit will cause electrical shutdown

for 6 seconds or until load is lowered.

(3)

Move HOIST control lever (3) in UP position to lift load. Move BOOM

control lever (6)1 in UP position to raise load higher.

(4)

Move HOIST control lever (3) to DOWN position to lower load. Move

BOOM control lever (6) to DOWN position to lower load further.

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