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TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download

Page 720 of 828

TM 9–2350–311–20–2 19–12 Change 2 19–3 ACCUMULATOR ASSEMBLY, MANUAL PUMP This task covers: a. Service (Method One) b. Service (Method Two) INITIAL SETUP Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Drain pan (item 8, Appx H) Nitrogen charging kit (item 3, Appx H) Materials/Parts Dry nitrogen (item 22, Appx D) Soap (item 33, Appx D) a. Service (Method One) 1 If accumulator is installed in vehicle, relieve pressure in hydraulic system (para 6–3). 2 Disconnect the two lower hydraulic tubes at the elevating mechanism locking valve. Catch the hydraulic fluid in a drain pan. 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. 3 Attach regulator (1) to nitrogen cylinder (2) as shown and tighten. 1 2