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 708 of 828

TM 9–2350–311–20–2

19–2

19–1 REPLENISHER ACCUMULATOR ASSEMBLY

This task covers:

Servicing with High Pressure Nitrogen

INITIAL SETUP

Tools

Nitrogen charging kit (item 3, App. H)

Purging kit, fire control (item 4, Appx H)

Materials/Parts

Dry nitrogen (item 22, Appx D)

Soap (item 33, Appx D)

Servicing with High Pressure Nitrogen

WARNING

Make sure charging cylinder contains dry nitrogen. Dry nitrogen tanks are marked with one or two

black bands. Certain other gases can cause accumulator to explode, resulting in possible injury and

equipment damage.

CAUTION

Under no circumstances exceed the pressures indicated in the following procedures to prevent

damage to equipment.

NOTE

Fire control charging kit is used to charge accumulator replenisher assembly to obtain low pressure

required.

1

To set up fire control charging equipment, remove protective cover (1) from shutoff valve (2).

2

Open shutoff valve (2) momentarily to rid valve seat of any foreign matter.

3

Attach regulator (3) securely using adapter (4).

3

4

2

1