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 725 of 828

TM 9–2350–311–20–2

Change 2

19–17

26

Open angle valve (20).

27

Slowly open safety-relief valve (19), reducing pressure to 90 psi (620 kPa) on accumulator (17), then close

safety-relief valve.

28

Close angle valve (20).

29

Open safety-relief valve (19).

30

Disconnect air pressure gage assembly (18) from valve body (6) on accumulator (17).

31

Apply soap suds to fittings of accumulator (17) to determine if nitrogen leaks exist. Notify support mainte-

nance if leaks are present.

32

Replace valve cap (4).

33

Replace accumulator cap (3).

20

6

17

18

11

12

2

14

13

15

9

5

19

4

3