TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download

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TM 9-2350-311-20-1 Do not perform more than two compression unbalance tests in a row to prevent discharge of batteries. NOTE Engine must beat normal operating temperature before performing compression unbalance test. - Shut off fuel supply so engine will not start (TM 9-2350-311-10). - Crank engine with fuel inhibited for 5 seconds to clear fuel from cylinders. - Set TEST SELECT switches to 14, press and release TEST button. - Wait for prompting message GO to appear. Refer to TM 9-4910-571-12&P for fault isolation. Figure 3, Sheet 35 of 36 I-61 CAUTION Go to step 6, Figure 3, sheet 36.