TM-9-2320-280-10 HMMWV Operator Manual Download
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TM 9-2320-280-10 2-134.2 Change 1 a. General. The vehicle power steering pump is used to power the winch. The engine must be running while operating the winch. However if the engine will not run, the winch cable may be payed out by moving the levers to FREE SPOOL wheel position, then paying out cable down to the fifth layer. Then move levers to LOCK position, keeping no less than five full wraps of cable on the winch drum. When engaging or disengaging HIGH and LOW range, it will be necessary to rotate the drum by hand to align gears. This may also be done by powering the winch in and out with no load on cable 1/2 second at a time until full engagement is achieved. b. Preparation for Use. NOTE The eye of the winch cable needs a thimble to keep wires from shearing or breaking. Refer to unit maintenance for installation. (1) Park vehicle directly facing object to be winched. Place transmission shift lever in “N” (neutral), or “P” (Park) for M1123 and A2 vehicles. (2) Apply parking brake. (3) Chock wheels. (4) Start engine (para. 2-10). c. Unwinding Winch Cable. CAUTION Do not power out winch cable for more than 10 ft (3 m). Use free spool for paying out long lengths of winch cable. Failure to free spool long lengths of winch cable will cause damage to winch. (1) Move clutch levers (1) and (2) to “FREE.” WARNING • Wear leather gloves when handling winch cable. Do not handle cable with bare hands. • When fully extending winch cable, ensure that five wraps of winch cable remain on drum at all times. Failure to do this may cause injury or death to personnel. NOTE Allow 1 ft (30.5 cm) of slack in winch cable prior to start of winching operations. This allows time for winch motor start up for maximum pulling power. (2) Pull cable (3) by hand to desired length. Connect to load, leaving 1 ft (30.5 cm) of slack in cable (3). 2-26.1. HYDRAULIC WINCH OPERATION