Toe Brake Cylinder(S); Disassembly; Cleaning, Inspection And Repair; Assembly - Piper Warrior III Maintenance Manual

D. Toe Brake Cylinder(s) (Cleveland 10-30.)
(Refer to Figures 6 and 7.)
(1) Removal
(a) Disconnect the upper and lower lines from the cylinder
to be removed and cap the lines to prevent fluid leakage
or drain the fluid from the brake reservoir and master
cylinder.
(b) Remove the cylinder from its attachment fittings by first
removing cotter pins that safety the cylinder attaching
pins and then removing the pins.

(2) Disassembly

(a) Remove the cylinder from its mounting bracket per
paragraph (1), above.
(b) To disassemble the cylinder, first remove the piston rod
assembly by removing the retaining ring from the
annular slot in the cylinder housing (1). Draw the piston
rod assembly from the cylinder.
(c) The piston rod assembly may be disassembled by first
removing the retaining ring (2), sleeve (3), spring (4),
and then the piston assembly, O-ring (5), and gland (8),
and, if desired, the return spring (14).
(d) Remove the O-rings from the piston and packing gland.

(3) Cleaning, Inspection and Repair

(a) Clean cylinder components with a suitable solvent and
dry thoroughly.
(b) Inspect interior walls of cylinder for scratches, burrs,
corrosion, etc.
(c) Inspect general condition of fitting threads.
(d) Inspect piston for scratches, burrs, corrosion, etc.
(e) Repairs to the cylinder are limited to polishing out small
scratches and burrs, and replacing seal and O-rings.

(4) Assembly

NOTE: Rub a small amount of hydraulic fluid (MIL-H-5606)
on all O-rings and component parts for ease of
handling during reassembly and to prevent damage.
(a) Install new O-rings on the inside and outside of the
packing gland (8) and on the outside of the piston (6).
(b) To assemble the piston rod assembly, install on the rod
(13), in order, the roll pin (16), washer (15), spring (14),
washer(11), packing gland (8) with O-rings, seal (5),
piston assembly (6) with O-ring, spring (4), sleeve (3)
and retaining ring (2).
(c) Insert the piston rod assembly in the cylinder (1) and
secure with the retaining ring (12).
(d) Install the cylinder per Installation, below.
3E21
PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
Toe Brake Cylinder (10-30)
Figure 7
32-40-00 PAGE 11
Nov 30/06