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 3-4 TROUBLESHOOTING — CONTINUED MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION CAB TRAVERSING SYSTEM—CONTINUED 22. CAB CREEPS. Step 1. Check positions of MASTER switch, CAB POWER switch, and TRAVERSE CONTROL switch. Turn MASTER switch and CAB POWER switch to ON. Turn TRAVERSE CONTROL switch to POWER. Step 2. Check for cant in excess of 89 mils. Level vehicle if necessary. If problem persists, notify unit maintenance. 23. TRAVERSING MECHANISM ASSEMBLY OVERHEATS. Check oil level in traversing mechanism assembly. Fill if oil level is low (item 46, Appx G). If oil level is not low, notify unit maintenance. ELEVATING SYSTEM 24. CANNON DOES NOT ELEVATE OR DEPRESS UNDER POWER OR MANUALLY, BUT HYDRAULIC PRESSURE IS NORMAL. Step 1. Check to see if cannon tube is in travel lock. If necessary, release travel lock. Step 2. Check cannon equilibrator adjustment. Adjust as necessary (para 3-6.2). If problem persists, notify unit maintenance. 25. EFFORT REQUIRED TO ELEVATE CANNON IS GREATER OR LESS THAN EFFORT REQUIRED TO DEPRESS CANNON. Check cannon equilibrator adjustment. Adjust as necessary (para 3-6.2). CAB HYDRAULIC SYSTEM 26. POWER PACK OPERATES CONTINUOUSLY WHEN CAB POWER AND MASTER SWITCHES ARE ON. Perform zero pressure check (para 3-6.4) on main accumulator assembly. If pressure is below 500 psi or problem persists, notify unit maintenance. 3-12