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TB 9-1000-234-13
(6) Insert eye bolts to gun shield.
(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 boll (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 (figure 2-7).
CAUTION
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.
g. Exercise of 105-mm/120-mm Gun (M1/M1A1/M1A2 Series Tank Only). The Gun Mount Exerciser is another
method for exercising the recoil mechanisms for the M1/M1A1/M1A2 Series Tank. Refer to the applicable manual for
operation of the Gun Mount Exerciser. (TM 9-2350-255-20-2-4 for M Tank, TM 9-2350264-20-2-4 for M1A1 Tank, and TM
9-2350-288-20-2-4 for M1A2 Tank).
2-8

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