TB-9-1000-234-13

TB 9-1000-234-13

2-8

(7)

Utilize two suitable lengths of rope, chain, cable with a 1/2 ton capacity and attach the end

of one to the eye bolt in the gun shield and the end of the other to an eye bolt of the

improvised muzzle block (step (5) above). Thread a steel ring (step (4) above) through

each length, attach opposite end of respective eye bolt (gun shield or muzzle block). Adjust

length so chain hoist can be attached to steel ring. Provide adequate length to rope, chain,

etc., on gun shield eye bolts to avoid damage to transmitter cover.

•

Make sure traversing and elevating controls are locked in place before using the

chain hoist.

•

Make sure gun launcher is at zero elevation. Gun may slide completely out-of-

battery if elevated.

(8)

One man operates the chain hoist and the other, from within the vehicle, opens the manual

relief valve on the side of the reservoir releasing gun mount precharge pressure. The chain

hoist is utilized to back the gun launcher out-of-battery for a distance of 6 to 8 inches. The

chain hoist is then released, the manual relief valve closed, and the pump handle actuated

until the gun launcher is returned to full battery position. This procedure is repeated at least

10 times. Upon completion, the recoil system should be left in full precharge pressurized

condition.

Exercise of 120-mm Gun (M1A1/M1A2SEP Series Tank Only).

The Gun Mount Exerciser is

another method for exercising the recoil mechanisms for the M1A1/M1A2SEP Series Tank.

Refer to the applicable manual for operation of the Gun Mount Exerciser (TM 9-2350-264-20-2-4

for M1A1 Tank, and TM 9-2350-388-23-2-4 for M1A2SEP Tank).

CAUTIONs

TB-9-1000-234-13 - Page 24 of 52