Disassembly Of Brake Master Cylinder; Assembly Of Brake Master Cylinder; Installation Of Brake Master Cylinder - Piper PA-31-350 Maintenance Manual

PIPER AIRCRAFT
T-1020
MAINTENANCE MANUAL
DISASSEMBLY OF BRAKE MASTER CYLINDER. (Refer to Figure 32-21.)
1. The internal parts of the brake master cylinder may be removed by removing the snap ring from the
annular slot at the lower end of the cylinder. Pull the complete piston assembly from the cylinder.
2. Slide the packing gland, O-ring, washer and spring from the piston rod.
3. The piston valve assembly may be removed by first removing the self-locking nut from the piston
rod. This will allow the piston with component parts to be removed.
CLEANING, INSPECTION AND REPAIR OF BRAKE MASTER CYLINDER.
1. Clean the cylinder parts with a suitable solvent and dry thoroughly.
2. Inspect the interior walls of the cylinder for scratches, burrs, corrosion, etc.
3. Inspect the general condition of the fitting threads of the cylinder.
4. Check the piston and valve for scratches, burrs, corrosion, etc.
5. Repairs to the cylinder are limited to polishing out small scratches, burrs, etc., and replacing valve
washer seal and O-rings.
ASSEMBLY OF BRAKE MASTER CYLINDER. (Refer to Figure 32-21.)
1. Install O-ring on the cylinder piston. Assemble onto the piston rod, the piston, spring, washer seal
and valve. Allow the valve to extend into the base of the piston. Slide the O-ring and washer in place and secure
with self-locking nut.
2. Install O-ring seal on the packing gland. Slide spring, washer, O-ring and packing gland onto the
piston rod.
3. Dip the piston assembly in fluid (MIL-H-5606) and install the assembly into the cylinder. Push the
packing gland into the cylinder until the snap ring can be installed into the annular slot at the bottom of the
cylinder.
INSTALLATION OF BRAKE MASTER CYLINDER.
1. Compress the piston within the cylinder and adjust the clevis end of the piston rod to obtain 6.69
inches between attachment holes of the cylinder body and the piston rod clevis. Lock clevis in position with
locknuts.
2. Attach the cylinder to the rudder pedal by securing at the cylinder body with bolt assembly and at
the clevis with clevis pin.
3. Connect the fluid lines to the cylinder.
32-45-03
Page 32-56
3F22
Revised: November 17, 1983
3F22