TM10-3930-660-20 14-6. EMERGENCY STEERING PUMP  - REPLACE  (Cont'd) CAUTION Wipe the area clean around all hydraulic connections to be opened during removal and  disassembly. Cap oil lines and plug holes after removing lines. Contamination of the hydraulic system could result in premature failure. WARNING At operating temperatures, hydraulic oil is hot and under pressure. Hot oil can cause  injuries. Allow hydraulic oil to cool before disconnecting any hydraulic lines. If more than one hydraulic line is to be removed, identify lines to assure proper installation. Use suitable container to catch any hydraulic oil that may drain from  system. 1. TAG AND DISCONNECT ELECTRICAL LEADS AND CABLES (1), (2), AND (3), AT PUMP (4) AND RELAY (5). a. Tag and disconnect and negative cable (4)  . b. Tag and disconnect power  cable  (1) (2) from pump electrical lead (3) from relay (5). Hose (7) is connected directly to hydraulic reservoir. When disconnecting any hose directly connected to reservoir at pump end, hose must be elevated, plugged, and tied in an up position above the level of fluid in the reservoir. 14-8