Cleaning, Inspection And Repair Of Wheel Brake Assembly; Brake Master Cylinder Assembly Diagram - Piper Navajo Chieftain PA-31-350 Service Manual

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1615 1413
12
9
L, 8. PISTON
14. O-RING
9. O-RING 15. GLAND
10. SPRING 16. SNAP RING
Figure 7-23. Brake Master Cylinder Assembly
c. Slide the brake cylinder housing from the torque plate.
d. Remove the pressure plate (6) by sliding off the anchor bolts of the housing.
e. The pistons may be removed by injecting low air pressure in the cylinder fluid inlet and forcing
the pistons from the housing.
f. -The following procedure should be used when removing anchor bolts:
1. Position cylinder assembly on a holding fixture. (Refer to Figure 7-22. Step A.)
2.
Use a suitable arbor press and remove the anchor bolt from the cylinder body.
7-54. CLEANING. INSPECTION AND REPAIR OF WHEEL BRAKE ASSEMBLY.
a. Clean the assembly with denatured alcohol and dry thoroughly.
b. Check the walls of the cylinder housing and pistons for scratches, burrs, corrosion, etc., that may
damage O-rings.
c. Check the general condition of the bleeder screw and lines.
d. Check anchor bolts for wear.
e. Lining may be removed from a backing plate by inserting a sharp tool between the lining and
plate. Press new lining on the backing plate.
NOTE
Replacement brake linings should be conditioned by performing
three consecutive hard braking applications from 45 to 50 mph. Do
not allow the brake discs to cool substantially between stops. This
conditioning procedure will wear off high spots and generate suf-
ficient heat to glaze the linings. Once the linings are glazed, the
braking system will provide many hours of maintenance free ser-
vice.
Revised: 3/11/81
LANDING GEAR AND BRAKE SYSTEM
NAVAJO CHIEFTAIN SERVICE MANUAL
2F11