TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 327 of 828
TM 9–2350–311–20–2 6–11 b. Draining Fluid NOTE • Be sure the power pack pressure system has been discharged (para 6–3a.) before draining hydraulic fluid. • Dispose of hydraulic fluid in accordance with local regulations. 1 Place a drain pan under tee on main return tube (8). 2 Loosen hex nut (9) and disconnect main return tube (8). Drain tube into drain pan. 3 Move assistant gunner’s control handle (10) back and forth to drain elevating tubes. 4 Loosen hex nut (11) and disconnect charging tube (12). Drain into drain pan. 5 Loosen elbow (13) and disconnect traversing motor drain tube (14). Drain into drain pan. NOTE Open bleed valves slowly to prevent hydraulic fluid and air from mixing. 6 Place a utility pail under each elevating cylinder bleed valve (15). Open elevating cylinder bleed valves and drain. 7 Turn elevating hand pump (16) in both directions. Totally drain hydraulic system. 8 Close elevating cylinder bleed valves (15). 9 Connect main return tube (8), charging tube (12), and traversing motor drain tube (14). Tighten hex nuts (9 and 11) and elbow (13). 14 12 9 8 16 10 13 14 15 11