TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9--2350--311--10 Change 4 3--49 3--6 ARMAMENT AND CAB MAINTENANCE — CONTINUED 3--6.4 Zero Pressure Check and Checking, Filling, and Draining Power Pack — Continued Procedure — Continued 15 Install power pack gage (15). 16 Install access cover (16) with gasket (17) on cab roof (18) and secure with four flat washers (19) and four cap screws (20). 17 Secure tow cable (21) to cab roof (18) with towing cable strap (22), flat washer (23), and cap screw (24). 18 Reconnect wire 645 (6). 19 Turn MASTER switch (1) and CAB POWER switch (2) to ON to charge the main hydraulic system. 20 The pressure gage (3) needle (9) will move from zero and stop between 1175 and 1275 psi (8102 and 8791 kPa). 21 If nitrogen pressure is low, use manual operation only. Notify unit maintenance as soon as possible. 15 16 18 19 20 21 22 23 24 6 2 3 9 1 17