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 830 of 938

TM 9-2320-279-20-2

Winches, Cranes, and Power Takeoff (PTO) Maintenance Instructions (Cont)

17-17.1. CRANE HOOK BLOCK, HOOK AND CLEWS REMOVAL/REPAIR/INSTALLATION

(M984E1) (CONT).

c. Cleaning/Inspection.

WARNING

Adhesives, solvents, and sealing compounds can burn easily, can give off harmful

vapors, and are harmful to skin and clothing. To avoid injury or death, keep away

from open fire and use in well-ventilated area. If adhesive, solvent, or sealing

compound gets on skin or clothing, wash immediately with soap and water.

(1)

Clean all metal parts with dry cleaning solvent.

(2)

Allow bearings to air dry, then coat with lubricating oil.

WARNING

Compressed air used for cleaning purposes will not exceed 30 psi. Use only with

effective chip guarding and personal protective equipment (goggles/shield,

gloves, etc.).

(3)

Dry metal parts with compressed air.

(4)

Inspect metal parts for breaks, cracks, and sharp edges.

(5)

Inspect bushing diameter. Diameter must not exceed 2.010 in. (51.05 mm).

(6)

Inspect bearing for loose rollers or cracked and broken races.

(7)

Replace all damaged parts.

d. Assembly.

NOTE

Place legs of spring behind latch.

(1)

Install spring (1) in latch (2).

(2)

Install latch (2) on hook (3) with

screw (4) and locknut (5).

NOTE

Curved side of bearing is installed facing

up. Be sure hook rotates freely.

(3)

(4)

17-86

Apply grease to bearing (6).

Install hook (3), in hook block (7) with

bearing (6), washer (8), nut (9), and

cotter pin (10).