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 126 of 828

TM 9–2350–311–20–2

3–17

b.

CANNON — CONTINUED

(2)

EXCESSIVE RECOIL FORCE.

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

References

TM 9–2350–311–10

Check hydraulic pressure on replenisher pressure

gage after mount has cooled (TM 9–2350–311–10).

Is replenisher pressure 17–24 psi (117.215–165.48 kpa)?

1.

Depress cannon assembly to zero mils

(TM 9–2350–311–10).

2.

Inspect muzzle brake (para 5–1).

Is more than a quarter of muzzle brake missing?

A

yes

no

yes

no

Replace muzzle brake

(TM 9–2350–311–10).

B

CONTINUED ON NEXT PAGE

Add hydraulic fluid, bleed

system, and check for leaks

(TM 9–2350–311–10).