Hydraulic System; General Description; Master Cylinder - THRUSH S2R – G10 Maintenance Manual

AIRCRAFT MAINTENANCE MANUAL

HYDRAULIC SYSTEM

GENERAL DESCRIPTION

Ref. Fig. 3-1 thru 3-4
The S2R-G10 aircraft has two individual
hydraulic systems using MIL-H-5606 "red"
hydraulic fluid. Each main landing gear
utilizes a master brake cylinder for the
operation of its brakes and parking brakes.
The master brake cylinder is connected to
dual three-puck disc type brake calipers by
brake lines that are supported by and
clamped to the airframe structure forward
of the master brake cylinder.
hydraulic brake lines are of rigid steel
tubing, except for the flexible hoses on the
landing gear tripod assembly. The master
brake cylinder is installed aft of the rudder-
brake pedals and is actuated by toe
3-2
Page
THRUSH AIRCRAFT, INC – MODEL S2R-G10
The
Figure 3-1: Brake Master Cylinder
pressure on the pedals. As toe pressure is
applied to the pedals, a push rod and
belcrank linkage moves an actuator rod,
pushing a piston in the master brake
cylinder. This forces hydraulic fluid into the
brake lines and applies pressure to the
appropriate brake. A spring in the master
cylinder returns the piston to its original
position. A check valve allows hydraulic
fluid into the master cylinder if the piston
produces suction on its return stroke.

MASTER CYLINDER

Ref. Fig. 3-1
The brake master cylinders contain the
actuating cylinder and a reservoir for
MIL-H-5606 hydraulic fluid. The seals in
the master cylinder have been changed to
ones compatible with this fluid.
Effective 03/26/2010