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 356 of 828

TM 9–2350–311–20–2

6–40

6–16 ELEVATION SELECTOR VALVE ASSEMBLY

This task covers:

a.

Removal

b.

Installation

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

Utility pail (item 7, Appx H)

Materials/Parts

Cap and plug set (item 7, Appx D)

Lockwashers (2) (item 107, Appx G)

Lockwashers (4) (item 182, Appx G)

Equipment Condition

Discharge hydraulic pressure (para 6–3)

a.

Removal

1

Disconnect electrical connector (1) at top of solenoid (2).

2

Remove solenoid (2) by removing four cap screws (3) and four lockwashers (4). Discard lockwashers.

NOTE

•

Dispose of hydraulic fluid in accordance with local regulations.

•

Drain hydraulic lines into utility pail at point of disconnect.

3

Disconnect six hydraulic tube connectors (5).

4

Remove two cap screws (6) and two lockwashers (7) to remove from body assembly (8) from plate (not

shown). Discard lockwashers.