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 319 of 828

TM 9–2350–311–20–2

Change 2

6–3

6–1

GAGE ASSEMBLY, SIGHT

This task covers:

a.

Removal

b.

Disassembly

c.

Assembly

d.

Installation

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

Utility pail (item 7, Appx H)

Materials/Parts

Caps and plugs (item 7, Appx D)

Lockwasher (item 80, Appx G)

Lockwashers (2) (item 79, Appx G)

Equipment Condition

Discharge hydraulic pressure (para 6–3)

Tow cable and cab access cover removed (para 14–11)

a.

Removal

CAUTION

All hydraulic lines and ports must be capped to prevent contaminants from entering the hydraulic

system and causing internal damage to hydraulic components.

NOTE

Dispose of hydraulic fluid in accordance with local regulations.

1

Drain hydraulic fluid from sight gage (1) by removing plug (2) and turning pointer handle (3) to DRAIN posi-

tion. Drain into utility pail.

1

2

3

M109A4/M109A5 HOWITZER