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 358 of 828

TM 9–2350–311–20–2

6–42

6–17 HYDRAULIC FILTER ASSEMBLY

This task covers:

a.

Removal

b.

Disassembly

c.

Inspection

d.

Assembly

e.

Installation

INITIAL SETUP

Applicable Configuration

M109A4/M109A5 howitzers

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

Drain pan (item 8, Appx H)

Materials/Parts

Cap and plug set (item 7, Appx D)

Hydraulic filter parts kit (item 187, Appx G)

Lockwashers (8) (item 79, Appx G)

Preformed packings (4) (item 44, Appx G)

Equipment Condition

Discharge hydraulic pressure (para 6–3)

a.

Removal

NOTE

•

If replacing filter assemblies only, proceed to step 2.

•

Dispose of hydraulic fluid in accordance with local regulations.

1

Remove drain plugs (1) (if present) from filter assemblies (2) and drain hydraulic fluid from bottom of filter

assemblies into drain pan. Replace drain plugs.

2

Loosen two nuts (3) and disconnect two adapters (4), two preformed packings (5), and attaching tubes (6)

from filter assemblies (2) and drain into drain pan. Discard preformed packings.

3

Loosen two nuts (7) and disconnect two adapters (8), two preformed packings (9), and attaching tubes (10)

from back of filter assemblies (2). Discard preformed packings. Drain excess hydraulic fluid into drain pan.