TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–72 3–3 TROUBLESHOOTING — CONTINUED e. CAB HYDRAULIC SYSTEM — CONTINUED (3) HYDRAULIC FLUID OVERFLOWS FROM TOP OF SIGHT GAGE OR CONTAMINATED CRYS- TALS IN HYDROSCOPIC BREATHER. INITIAL SETUP Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Utility pail (item 7, Appx H) Materials/Parts Hydraulic fluid OHT (item 21, Appx D) Equipment Condition Cab access cover removed (para 14–11) 1. Discharge pressure in hydraulic system (para 6–3). 2. Check power pack gage for hydraulic fluid level. Is fluid level over FULL AT 0 PRESSURE mark? Charge main accumulator assembly nitrogen (para 19–4). If malfunction per- sists, notify support mainte- nance. NOTE A loss of nitrogen pressure in the main accumulator assembly will affect hydraulic fluid level reading on sight gage. Sight gage will show hydraulic fluid level to be low. Adding hydraulic fluid to compensate for this loss of nitrogen will result in an overflow of hydraulic fluid from top of sight gage when system is discharged. A yes no CONTINUED ON NEXT PAGE POWER PACK GAGE FULL AT 0 PRESSURE MARK