Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 835 / 1956

PAGE 9
Feb 28/07 4F9
32-40-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
(16) Set parking brakes.
(17) Remove chocks from wheels before moving airplane.
8. Brake Bleeding Procedure
A. (Gravity)
(1) On both main landing gear wheel brake assemblies, attach a clear plastic hose to the brake
bleeders. Extend the hoses into a container partially filled with hydraulic fluid, MIL-H-5606. The
ends of the hoses should be submerged in the fluid. Open both bleeders approximately one
and one-half to two turns.
(2) Fill the brake reservoir on the forward pressure bulkhead with hydraulic fluid, MIL-H-5606.
(3) Pump the toe brakes very slowly approximately 25 times until fluid is observed passing through
the clear plastic hoses at the wheel cylinder.
NOTE: Fluid level in the reservoir must be maintained to prevent air from entering the line.
(4) Tighten both wheel bleeders.
(5) Check per Brake System Leak Check.
B. (Pressure)
(1) Place a small clear plastic hose on the vent tube of the brake reservoir and place a second
small clear plastic hose on the bleeder fitting on one main landing gear. Place the open ends of
these hoses in a suitable container to collect the fluid overflow. Open the bleeder fitting one or
two turns.
(2) On the other main gear, slide the hose of the pressure unit over the bleeder fitting, then open
the fitting one or two turns and pressure fill the brake system with MIL-H-5606 fluid.
(3) With fluid continually flowing through the brake system, SLOWLY and together actuate the
pedals several times.
NOTE: By watching the fluid pass through the plastic hose at the fluid reservoir and the
bleeder fitting on the gear being bled, it can be determined whether any air is left in
the system. If air bubbles are evident, filling of the system shall be continued until all
the air is out of the system and a steady flow of fluid is obtained. Should the toe
brakes remain spongy, it may be necessary to repeat the brake bleeding procedure.
(4) Close the open bleeder fitting on the gear being bled. Close the open bleeder fitting to which
the pressure hose is attached; then close the pressure unit and remove the hoses from the
bleeder fittings and from the reservoir vent. Check the brakes for proper pedal pressure.
Replace the caps over the bleeder fittings.
NOTE: It may be necessary to remove any trapped air in the top of the wheel brake unit by
applying pressure to the system with the toe brakes and slowly opening the bleeder
and releasing the hand lever.
(5) Repeat this procedure, if necessary, on the other gear.
(6) Drain excess fluid from the reservoir to fluid level line with a syringe.