TM 9-2350-238-10OPERATING CRANE–CONTINUED3Make sure flasher light isoperating during recovery orload. Do not lift or tow leads4beyond rated capacities ofequipment.1 Operating boom and boom winch to liftloads and place them where desired,5such as removal and installation ofpower plants.2 Traversing cab to locate boom over aload and/or to align tow winch wire ropewith a vehicle being recovered.STARTING HYDRAULIC SYSTEMOperating tow winch to recover a dis-abled vehicle, such as pulling out a miredvehicle or a damaged vehicle.Locking suspension system to makerecovery vehicle a stable platform fromwhich to work.Emplacing spade to take advantage oftotal recovery vehicle weight to liftloads, and to provide an anchor to pre-vent moving the M578 recovery vehiclewhen pulling heavy loads with towwinch.I1 Start and warm up engine. Refer to page2-52.NOTEWarm hydraulic oil beforeoperating hydraulic componentsin cold weather, Engagehydraulic system for 5-10minutes when temperature is32°F (0°C) or below.2 Idle engine 650-700 rpm using handthrottle (1).only at engine idle speed. Whenmagnetic clutch is engaged,engine speed should not exceed1,350 rpm.3 Set hydraulic pump PTO CLUTCH switch(2) to ON.4 When magnetic clutch is engaged, in-dicator light (3) comes on. Pull handthrottle (1) all the way out to run engineat 1,350 rpm with only hydraulic pumpoperating. When operating hydrauliccomponents, engine speed will drop to1,200 rpm.Make sure that hydraulic pumppower takeoff clutch is engaged2-67
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