TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 6–32 Change 2 6–12 ACCUMULATOR ASSEMBLY (SECONDARY) This task covers: a. Removal b. Service c. Test-Leakage d. Installation INITIAL SETUP Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Materials/Parts Caps and plugs (item 7, Appx D) Lockwashers (4) (item 55, Appx G) Preformed packing (item 48, Appx G) Equipment Condition Discharge hydraulic pressure (para 6–3.1) a. Removal CAUTION All hydraulic lines and ports must be capped to prevent contaminants from entering the hydraulic system and causing internal damage to hydraulic components. 1 Remove hose connector (1), reducer (2), and preformed packing (3) from secondary accumulator assembly (4). Discard preformed packing. 2 Remove two machine screws (4.1) and mechanical guard (4.2) from secondary accumulator (4). 3 While supporting secondary accumulator (4), remove two cap screws (5), two flat washers (5.1), two lock- washers (6), two hex nuts (7), and retaining strap (8) from each accumulator bracket (9 and 10). Discard lockwashers. 4 Remove secondary accumulator (4). 5 If necessary to replacement, remove instruction plate (11) from secondary accumulator (4). 6 Remove four cap screws (12), four flat washers (13), and mounting brackets (9 and 10). b. Service Service secondary accumulator assembly (para 19–6). c. Test-Leakage 1 Plug hydraulic tube hole in secondary accumulator (4). 2 Submerge secondary accumulator (4) completely in water for at least ten minutes. There must be no evi- dence of leakage during the entire period. 3 Replace secondary accumulator (4) if it leaks.