Parking Brakes - THRUSH S2R – G10 Maintenance Manual

AIRCRAFT MAINTENANCE MANUAL
An alternative method of bleeding the
brakes is as follows:
1. Place a large clean container under the
master brake cylinder and uncap the
hydraulic fluid reservoir.
2. Bleed the outlet hose of a "pressure
pot" full of MIL-H-5606 "red" hydraulic
fluid until a steady stream of hydraulic
fluid comes out.
3. Place this outlet hose over a bleeder
valve and then open the bleeder valve.
4. Open the pressure pot valve and force
hydraulic fluid through the caliper and
up the brake lines to the master
cylinder.
5. Force at least a pint of hydraulic fluid
through the brake lines into the master
cylinder reservoir,
overflow.
6. Close the bleeder valve and connect
the pressure pot line to the other
bleeder valve.
7. Open the bleeder valve and force
another few fluid ounces of hydraulic
fluid back to the master cylinder.
8. Close the bleeder valve and clean off
the brake master cylinder and dispose
of the flushed hydraulic fluid properly.
Be sure to replace the reservoir cap
before releasing the airplane.
3-6
Page
THRUSH AIRCRAFT, INC – MODEL S2R-G10
allowing it to

PARKING BRAKES

Ref. Fig. 3-2
Parking brakes are actuated by depressing
the brake pedals as normal and then
locking the pressure in the brake system
downstream of the master cylinders.
Parking brakes are only for temporary
parking. Any leaks or seepage of
hydraulic fluid from the brake system or
slippage of the master cylinder plunger will
slowly release the parking brake. If the
airplane is being parked for more than 4
hours it should be tied down.
Operate the 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 03/26/2010