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 415 of 938

TM 9-2320-279-20-2

Frame and Tire Carrier Maintenance Instructions (Cont)

14-15.01 SELF-GUIDED COUPLER REMOVAL/REPAIR/INSTALLATION

(M1977-CBT ONLY) (CONT).

e.

Installation.

CAUTION

Ensure sleeve is fully supported until after

step

(2)

is completed or sleeve may fall.

Failure to comply may result in damage to

parts.

(1)

With the aid of an assistant, position

sleeve (1) on truck (2).

(2)

With the aid of an assistant, install four

screws (3), washers (4), and nuts (5) in

sleeve (1). Tighten nuts to 500 lb-ft

(678 N•m).

Self-guided coupler weighs 100 lbs

(45 kg). Attach suitable lifting

device prior to installation to

prevent possible injury to personnel.

(3)

Attach lifting device to

self-guided coupler (6).

(4)

Position self-guided

coupler (6) on sleeve (1).

(5)

Install washer (7) and nut (8)

in self-guided coupler (6).

(6)

Tighten nut (8) to 100 lb-ft

(136 N•m).

(7)

Back off nut (8) to nearest

slot and install cotter pin (9).

(8)

Remove lifting device from self-guided coupler (6).

NOTE

If thickness of washer behind nut is less than 0.19 inch when steps (6) and (7) are repeated,

replace washer.

WARNING

f.

(9)

Check that axial clearance does not exceed 1/32 inch. If clearance exceeds 1/32 inch, remove

cotter pin (9) and repeat steps (6) and (7).

(10)

Install boot (10) and hose clamp (11).

Follow-on Maintenance.

Lubricate self-guided coupler (LO 9-2320-279-12).

END OF TASK

14-28.8

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