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TM 9-2320-270-10
OPERATING WINCHES – CONTINUED
Cable pay out or take-up can be reversed quickly by moving control handle to opposite direction.
Only one winch can be operated at a time in high speed. High speed operation involves diverting
hydraulic power from one winch to combine diverted power with other winch. This doubles
the operating speed of the winch that is in operation at high speed. If all four control levers are
moved forward at the same time only low speed payout or takeup will result.
Operating Winches in Temperature Below -25° F (-32°C)
CAUTION
DO not attempt to operate the winches in temperatures below -25°F (-32”C)
until cold weather servicing has been performed on both winches by Organ-
izational Maintenance. Failure to have cold weather servicing performed may
result in damage to winch parts.
1. Check to be sure winches have had cold weather servicing.
2. Ready winches for operation (see page 2-94).
3. Engage PTO and run M911 Truck Tractor at fast idle (1000 rpm) for approximately 30
minutes to warm up hydraulic systems.
4. Pay out and take up about 100 feet of cable at low speed from both winches to operate
no load.
CAUTION
Avoid winching operations that cause sudden shock loads; Metals become brittle at
extremely cold temperatures, and sudden shock loads may cause equipment
damage.
5. Winches are now ready for cold weather operation.
2-93
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