Piper SARATOGA PA-32-301 Maintenance Manual page 339

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
ASSEMBLY OF BRAKE CYLINDER.
- NOTE-
Use a small amount of hydraulicfluid (MIL-H-5606) on the O-ring
and component parts to prevent damage and ease of handling
during reassembly.
1. Cleveland cylinder number 10-30. (Refer to Figure 32-15.)
A. Install new O-rings on the inside and outside of the packing gland and on the outside of the
piston.
B. To assemble the piston rod assembly. install on the rod, in order, the roll pin, washer, spring.
washer, packing gland with O-rings, seal, piston assembly with O-ring, spring and roll pin.
C. Insert the piston rod assembly in the cylinder and secure with the retaining ring.
D. Install the cylinder. (Refer to Installation of Brake Cylinder.)
2. Gar-Kenyon cylinder number 17000. (Refer to Figure 32-16.)
A. Install new O-rings on the inside and outside of the fitting and on the outside of the piston.
B. To assemble the piston rod assembly, install on the rod, in order, the roll pin, return spring
retainer washer, return spring, fitting with O-rings, seal, piston with O-ring, spring and sleeve. Secure these
pieces with the retaining ring on the end of the rod.
C. Insert the piston rod assembly in the cylinder and secure fitting.
D. Install the cylinder. (Refer to Installation of Brake Cylinder.)
INSTALLATION OF BRAKE CYLINDER. (Refer to Figure 32-14.)
1. Position the cylinder at its mounting points and attach wire clevis pins. Safety the pins with cotter
pins.
2. Connect the brake lines to the cylinder fittings.
3. Bleed the brakes.
BRAKE BLEEDING PROCEDURE (GRAVITY).
1. Attach a clean, clear plastic tube to the brake bleeder of the right landing gear. Extend the free end of
the tube to a container partially filled with hydraulic fluid (MIL-H-5606). Determine that the end of the tube is
submerged in the fluid. Open the bleeder 1 /2 to I turn.
2. Fill the brake fluid reservoir with hydraulic fluid. It is located behind the left side access panel at the
forward baggage compartment.
3. Check to determine the right hand toe brake pedal(s) in the cockpit have been pulled full aft.
4. Pull the hand brake handle and slowly pump the master cylinder approximately 50 times or until
hydraulic fluid is observed passing through the plastic tube at the brake bleeder.
-NOTE -
Fluid level in the reservoir must be maintained to prevent airfrom
entering the system.
5. Pump right brake cylinder very slowly approximately 12 times. This will purge air from the toe brake
cylinder system. Watch for any air forced through the clear plastic tube during this operation to insure air has
been forced from the toe brake system.
6. Pump the hand brake an additional 25 times or until no air is observed through the clear plastic tube.
32-43-17
Page 32-27
2C22
Revised: August 11, 1983
2C22