TM 9-2320-273-20
Section XXVII WINCH
2-79. INTRODUCTION.
The winch is installed on M916 and M920. The assembly is located behind the cab with all operating
controls.
2-80. WINCH.
1.
INLINE RETURN FILTER. Throwaway filter removes water and dirt from oil returning
to reservoir.
2.
WINCH CABLE. 7/8 inch (22.2 mm) diameter wire rope, 150 feet (46 m) long. Rated at
75,000 Ibs (33,600 N) minimum breaking strength.
3.
CONTROL VALVE. Detented “up” position supplies pressure to outlet for auxiliary
hydraulic system. Down position provides high speed winch operation.
4.
AUXILIARY THROTTLE. Adjusts power input to PTO by altering engine speed.
5.
DIRECTIONAL CONTROL VALVE. Controls winch direction. Spring-loaded valve returns
to middle position when released, causing winch brakes to apply.
6.
HYDRAULIC MOTOR. Turns winch to pay out or haul in cable. Powered by oil under
pressure from pump.
7.
DUAL PUMP. 22 gpm/gear; total of 44 gpm @ 2200 engine rpm gear type pump powered
by PTO supplies 2350 psi (14,800 kPa) hydraulic pressure to motor through hydraulic
valves.
8.
POWER TAKEOFF. Drives dual pump. (See paragraph 2-78 for functional description.)
9.
INLET STRAINER. Removes large particles from oil going to dual pump.
10.
HYDRAULIC RESERVOIR. Supplies oil to dual pump and receives oil returning from
system.
11.
COVE R PLATE. When removed allows access to interior of reservoir to service interal
strainer and for general clean out.
2-90
