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 322 of 828

TM 9–2350–311–20–2

6–6

6–1

GAGE ASSEMBLY, SIGHT — CONTINUED

d.

Installation

1

Using machine bolt (9) and new lockwasher (10) at top of sight gage (1) and cap screw (11) near bottom of

sight gage, attach sight gage to power pack assembly (12).

NOTE

Steps 2 and 3 pertain only to M109A4/M109A5 howitzers.

2

Attach 2-inch hose (8) to bent metallic tube (7) at top of sight gage (1).

3

Install two hose clamps (6) and bent metallic tube (7); tighten hose clamps.

NOTE

Ensure valve assembly is in GAGE postion.

4

Remove plug (2) from bent metallic tube (4). Install bent metallic tube by tightening coupling nut (5) to sight

gage (1).

5

Install plug (2).

6

Check hydraulic fluid level (para 6–2).

M109A2/M109A3 HOWITZER

M109A4/M109A5 HOWITZER

9

1

2

1

4

4

5

5

6

8

6

7

9

12

12

11

11

2

10

10