TM10-3930-660-20 18-22. BOOM HOSE PULLEY - REPLACE This  task  covers: a. Removal b. Installation Initial Setup Tools Shop Equipment, Maintenance  and #1  Less  Power Automotive Materials/Parts Locknuts  (22,  26) Repair, Common Lockwasher (8, 17, 28, 32) Loctite 242 (App. C, Item 39) Rope, 20 Ft. Equipment  Condition Vehicle parked on level ground. Reference TM10-3930-660-10 Hydraulic oil, in the system can be under pressures over 3000 psi with the engine OFF. ALWAYS relieve pressure in hydraulic lines before attempting to remove any component in the hydraulic system. With engine OFF, starter switch in RUN position, and MLRS attachment on the ground, move control levers through all operating positions several times to relieve line pressure. Relieve pressure in hydraulic oil tank by loosening filler cap very slowly. Failure to follow these precautions serious personal injury. could result in 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. 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. 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. 18-84

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