TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 343 of 828
TM 9–2350–311–20–2 6–27 d. Testing 1 Loosen two hex nuts (7) at ports M–1 and M–2. Drain fluids from manual elevation tubes (8) into utility pail. 2 Remove accumulator cap (9) and air valve cap (10) from accumulator (3). NOTE Each check with tire pressure gage will deplete pressure by approximately 20 psi (137.90 kPa). 3 Use tire pressure gage to check nitrogen pressure at valve (11). NOTE If precharged pressure is below 75 psi (517 kPa), charge the accumulator (para 19–3). 4 Tighten two hex nuts (7) to secure manual elevation tubes (8). 5 Install air valve cap (10) and accumulator cap (9) on accumulator (3). 6 Rotate manual elevation hand pump handle (12) counterclockwise. Rotate until movement is detected in elevating cylinder. Then, bleed elevating cylinder (para 6–3a.). 12 7 8 9 10 3 11