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 306 of 828

TM 9–2350–311–20–2

5–48

5–19 REPLENISHER ACCUMULATOR ASSEMBLY — CONTINUED

a.

Removal — Continued

NOTE

Draining system in step 2 will drain only buffer assembly and replenisher accumulator.

2

Drain recoil mechanism hydraulic fluids by disconnecting hydraulic tube (3) at buffer assembly (4). Catch

hydraulic fluid in utility pail.

WARNING

Replenisher accumulator contains pressurized nitrogen. Do not disassemble until all pressure is

relieved to avoid injury to personnel.

3

Remove valve cap (5) and release nitrogen pressure from accumulator bag (6).

4

Disconnect hose assembly (7) at elbow (8).

5

To remove hose assembly (7), remove six cap screws (9) from six clamps (10). Remove six clamps from

hose assembly.

6

Disconnect hose assembly (7) and remove from manifold (11).

7

Remove valve cap (12), check valve (13), and preformed packing (14) from adapter (15). Discard preformed

packing.

8

Remove plug (16) and preformed packing (17) from adapter (15). Discard preformed packing.

9

Remove elbow (8) and adapter (15).

10

Remove pressure gage (18) and coupling (19).

WARNING

Weight of replenisher accumulator is 65 pounds (30 kg). A second person must support replenisher

accumulator inside cab to prevent injury to personnel.

11

Remove four self-locking nuts (20) and four flat washers (21) from two U-bolts (22) on right front of cab. Dis-

card self-locking nuts.

12

Remove two U-bolts (22), replenisher accumulator (23), and cushioning pad (24) from cab wall by removing

four flat washers (25) and four inside hex nuts (26).