Piper SENECA II - Brake Bleeding Procedure (Gravity)

PIPER SENECA II SERVICE MANUAL
Figure 7-20. Brake Cylinder (10-30) (Toe Brake)
01/01/09 VII - LANDING GEAR AND BRAKE SYSTEM
1L17
7-66. BRAKE BLEEDING PROCEDURE (GRAVITY).
a. On both main landing gear wheel brake assemblies, attach a clear plastic hose to the brake bleeders
and extend into container partially filled with hydraulic fluid, MIL-PRF-5606H. The ends of this
hose should be submerged in the fluid. Open both bleeders approximately one and one-half to two
turns.
b. Fill the brake reservoir on the fire wall with hydraulic fluid, MIL-PRF-5606H.
c. Disconnect the toe brake cylinders from the pedal connection by removing clevis pin, washer and
cotter pin.
d. Invert toe brake cylinder to aid in releasing trapped air in the top of the cylinder.
e. Check toe brake pedals in the cockpit to ensure pedals are pulled full aft.
f. Pull the hand brake handle, pumping the master cylinder very slowly approximately 25 times until
fluid is observed passing through the clear plastic hoses at the wheel cylinder.
NO
TE: Fluid level in the reservoir must be maintained to prevent air from entering in the line.
g. Tighten both wheel bleeders.
h. Pull hand brake until a firm handle is maintained.
234 567 8910 II
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14 15
1. HOUSING
6. PISTON 11. WASHER WIPER
2. RETAINING RING
7. O-RING 12. ROD
3. SLEEVE
8. GLAND
13. SPRING
4. SPRING
9. O-RING
14. WASHER
5. O-RING
10. O-RING 15. ROLL
PIN