TM-9-2320-279-34-2

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

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 2 OF 3

TM-9-2320-279-34-2 - Page 353 of 632

TM 9-2320-279-34-2

Frame Maintenance Instructions (Cont)

13-30.3. RETRIEVER LIFT CYLINDER REPAIR (M984E1 ) (CONT).

(8)

(9)

Remove wiper seals (14), backup ring (15), and

seal (16) from head (9).

Remove preformed packing (17) and backup

ring (18).

b. Cleaning and Inspection

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) Inspect threads of end cap and cylinder for nicks and burrs.

(3) Inspect cylinder for grooves on inside wall.

(4) Inspect head and piston for nicks and gouges.

(5) Remove nicks and burrs with crocus cloth. Clean up threads with thread chasing tool.

(6) Lubricate piston rod, head, piston, and inside of cylinder with oil.

(7) Replace piston rod if scored, pitted, bent or damaged,

(8) Replace bushing if inside diameter is out of round more than 0.005 in. (0.127 mm) or inside

diameter is greater than 3.007 in. (76.37 mm).

c. Assembly.

(1)

Install backup ring (1) and preformed

packing (2) on head (3).

(2) Install seal (4), backup ring (5), and wiper

seal (6).

13-90.12