TM-9-2350-311-20-2

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

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 713 of 828

TM 9–2350–311–20–2

Change 2

19–5

5

Rotate cover (7) to the open position. Tighten top cap screw (6) to hold cover in open position.

6

Remove valve cap (8) from check valve (9).

7

Attach M3 oil pump (4) to check valve (9). Fill piston until two pins (5) extend not less than 1/8 inch

(3.2 mm). Do not overfill (piston requires about 0.5 pint (0.2 l)). After filling, disconnect M3 oil pump.

8

Install valve cap (8).

9

Loosen top cap screw (6), then rotate cover (7) to the closed position.

10

Tighten two cap screws (6).

8

9

6

5

4

6

7

3