Thrush Aircraft S2R–T660 Maintenance Manual page 73

THRUSH AIRCRAFT INC - T660 TURBO THRUSH
SECTION THREE
The S2R-T660 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.
Effective: 12/17/03 Effective: 12/17/03
AIRCRAFT MAINTENANCE MANUAL
HYDRAULIC SYSTEM
GENERAL DESCRIPTION
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