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 320 of 828

TM 9–2350–311–20–2

6–4

6–1

GAGE ASSEMBLY, SIGHT — CONTINUED

NOTE

If plug is not available to plug tube, reservoir must be drained (para 6–3) prior to disconnecting tube.

2

Disconnect bent metallic tube (4) from sight gage (1) by unscrewing coupling nut (5). Install plug (2) to pre-

vent hydraulic fluid from draining.

NOTE

Step 3 only pertains to M109A4/M109A5 howitzers.

3

Loosen two hose clamps (6) and disconnect bent metallic tube (7) from top of sight gage (1). Remove hose

clamps and 2-inch hose (8).

4

Remove machine bolt (9) and lockwasher (10) from top of sight gage (1) and cap screw (11) near bottom

and remove sight gage from power pack assembly (12).

M109A2/M109A3 HOWITZER

9

1

4

5

12

11

2

10

M109A4/M109A5 HOWITZER

1

2

4

5

6

8

6

7

9

12

11

10