TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 Change 2 3–57 1. Check pressure of nitrogen charge in manual pump accumulator assembly (para 6–9). 2. Charge if pressure is not 75–90 psi (517–620 kPa) (para 19–3). 3. Check to see that charge holds. Does accumulator hold charge? C Replace manual elevation pump (para 6–15). If mal- function persists, notify support maintenance. Attempt to elevate and depress the system using manual elevating hand pump. Does cannon elevate or depress manually? yes no D Verify fault is corrected. Continue normal opera- tions. CONTINUED FROM STEP B END OF TASK yes no Replace accumulator as- sembly (manual pump) (para 6–9). SIDE VIEW MANUAL ELEVATING HAND PUMP MAIN ELEVATION CONTROL ACCUMULATOR ASSEMBLY (MANUAL PUMP)