Figure 1-8. Hoist winch assembly--right rear view.
(b) Hoist winch combination valve (fig. 1-8). The hoist winch combination control valve is mounted on the
side of the hoist winch counterbalance valve, which is mounted to the hydraulic motor manifold. It is a three-
position, balanced-center valve, and serves to direct hydraulic flow through the counterbalance valve and
manifold to the hydraulic motor, thus determining the direction of motor rotation.
(c) Hoist winch counterbalance valve (fig. 1-8). The hoist winch counterbalance valve is located between
the hoist winch combination control valve and the hydraulic motor manifold. The function of the valve is to
prevent a possible overspeed of the hoist winch motor and also prolong the life of the hoist winch brake. (See
(d) Hoist winch hydraulic motor (fig. 1-8). The hydraulic motor is mounted to the manifold at the rear of
the hoist winch. It is a vane-type, reversible motor which serves to convert hydraulic