TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
Page 82 of 552
TM 9-2350-311-34-2 2-22 QUICK GUIDE TO TROUBLESHOOTING - CONTINUED 2-22.4 Quick Guide to Troubleshooting List - Continued ITEM SYMPTOM PARAGRAPH CAB HYDRAULIC SYSTEM POWER PACK HYDRAULIC PUMP MOTOR DOES NOT OPERATE, BUT CAB LIGHTING SYSTEM OPERATES NORMALLY. Replace direct current motor of power pack assembly. HYDRAULIC PRESSURE IS NORMAL, BUT HYDRAULIC POWER IS NOT BEING SUPPLIED. Inspect and repair spools and sleeves of cover assembly. HYDRAULIC FLUID OVERFLOWS FROM TOP OF SIGHT GAGE OR CONTAMINATED CRYSTALS IN HYGROSCOPIC BREATHER. Repair or replace main accumulator assembly. HYDRAULIC PUMP MOTOR ON/OFF CYCLE IS RAPID. MAIN ACCUMULATOR WILL NOT HOLD DRY NITROGEN CHARGE. Repair or replace main accumulator assembly. GUNNER’S OR ASSISTANT GUNNER’S CONTROL HANDLE DOES NOT RETURN TO NEUTRAL POSITION WHEN RELEASED. RAMMER HYDRAULIC SYSTEM PANORAMIC TELESCOPE BALLISTIC COVER RAMMER DOES NOT OPERATE PROPERLY. Inspect and repair rammer cylinder assembly. EXTREME EFFORT REQUIRED TO TRAVERSE PANORAMIC TELESCOPE BALLISTIC COVER. Check brakes for proper operation. Clean and inspect bearing balls. Replace as necessary. 6-1 6-2 6-7 2-23e.(1) 6-7 2-23e.(2) 7-2 Chapter 13 2-20