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TM 9-2320-360-34-1
1-18. WINCH SYSTEM
The winch system operates hydraulically and consists of two main winches (1 and 2) and an auxiliary winch (3). The main
winches operate independently of each other and are used to recover, load, and unload heavy tracked and wheeled
vehicles. The main winches are mounted side-by-side directly to the winch platform. The auxiliary winch is used to pull
the main winch cable out to the payload. The auxiliary winch is mounted to the winch platform just below the driver's side
main winch.
The winches are controlled from the operator's station (4). The operator is protected by a personnel guard during winch
operations. The main winch controls are the winch kickout control, cable hold down lever, engine idle selector switch,
engine high idle lock switch, winch speed control switch, and the winch drum control.
Each main winch incorporates a two-speed hydraulic motor (5 and 6). The hydraulic motor is used to provide power. It
converts hydraulic horsepower from the pump and control circuitry to rotary mechanical horsepower for driving the gear
system. A single-speed motor (7) is used by the auxiliary winch. A Power Takeoff (PTO) driven hydraulic pump (8)
supplies the winch system with hydraulic oil from the reservoir (9). A two-piece driveshaft connects the transmission
driven PTO to the hydraulic pump (8). A view gage (10) on the reservoir indicates the hydraulic oil level. All winches
have a fail-safe brake and winch brake valve for winch load control.
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