TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 998 of 1275

TM 9-2350-311-20-1

7

8

9

10

Remove (located inside hull) cotter pin (19), adjusting nut (20), locking lever (21 ), woodruff key (22), Iockspring

(23), and washer (24). Discard cotter pin and Iockspring.

Remove (located outside hull) locking cam (25), spring washer (26), two flat washers (27), and sleeve bearing

(28). Discard spring washer.

Remove six screws (29) and cover seal (30). Scrape off old sealant from seal ring (hatch opening) (31 ).

Discard seal.

WARNING

Dry-cleaning solvent (P-D-680) is toxic and flammable. Wear protective goggles and

gloves and use only in a well-ventilated area. Avoid contact with skin, eyes, and

clothes, and don’t breathe vapors. Do not use near open flame or excessive heat. The

flashpoint for type #1 is 100°F (38°C), and for type #2 is 138°F (59°C). If you become

dizzy while using dry-cleaning solvent, get fresh air immediately and get medical aid.

If contact with eyes is made, wash your eyes with water and get medical aid

immediately.

Remove preformed packing (32). Clean groove with dry-cleaning solvent. Discard preformed packing.

11-19