Figure 1-4. Mast features.

TM 10-3930-627-12

g. Mast Hydraulic System (fig. 1-5). Using

handle for each spool. he inboard handle controls the

hoist cylinder, and e outboard handle works the tilt

pressure from the hydraulic pump, the control valve

cylinders. The hoist cylinder is a two-stage single acting

directs pressure to the hoist cylinder to raise the load,

unit, raised by pressure and lowered by gravity; the tilt

and to the tilt cylinders to tilt the uprights. The priority

cylinders are double-acting.

(flow divider) valve on the pump supplies pressure to the

power steering unit. The two-spool control valve has a

1-6