Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual page 64

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
HYDRAULIC SYSTEM
GENERAL DESCRIPTION
The S2RHG-T65 aircraft has two individual hydraulic systems using MIL-H-5606 fluid.
The main landing gear utilizes a master brake cylinder for the operation of the landing
gear brakes and parking brakes. The master brake cylinder is connected to the disc type
brake calipers by brake lines that are supported by and clamped to the airframe structure
forward of the master brake cylinder. The hydraulic brake lines are of rigid steel tubing,
except for the flexible hoses on the landing gear assembly. The master brake cylinder is
installed aft of the rudder-brake pedals and is actuated by toe pressure on the pedals. As
toe pressure is applied to the pedals, the push rod, piston and spring are pressed into the
master brake cylinder. This compresses hydraulic fluid in the lines and applies pressure
to the appropriate brake.
Operate individual parking brakes as follows:
ON – Depress rudder pedal, pull parking valve lever, take pressure off of rudder pedal.
OFF – Depress rudder pedal, valve will deactivate and lever will pop in.
3 - 2
Effective: 5/05/04