Piper PA-28-161, Maintenance Manual

Page: 524 / 1104

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 10
Nov 30/06
3E20
32-40-00
(2) Disassembly (Refer to Figure 5.)
(a) Remove the cylinder from its mounting bracket in accordance with instructions given in
paragraph (1), above.
(b) To disassemble the cylinder, first remove the piston rod assembly by removing the snap
ring (11) from the annular slot at the rod end of the cylinder. Draw the piston rod assembly
from the cylinder.
(c) The piston rod assembly may be disassembled by first removing the small snap ring (2)
securing the retainer bushing spring (4), piston (6), seal (7), gland (9), and, if desired, the
large return spring (13).
(d) Remove the O-rings from the piston and gland.
(3) Cleaning, Inspection and Repair
(a) Clean the cylinder parts with a suitable solvent and dry thoroughly.
(b) Inspect the interior walls of the cylinder for scratches, burrs, corrosion, etc.
(c) Inspect the general condition of the fitting threads of the cylinder.
(d) Check the piston for scratches, burrs, corrosion, etc.
(e) Repairs to the cylinder are limited to polishing out small scratches, burrs, etc., and
replacing O-rings.
(4) Assembly
NOTE: Use is small amount of hydraulic fluid (MIL-H-5606) on the O-rings and component
parts to prevent damage and ease of handling during reassembly.
(a) Install new O-rings on the inside and outside of the packing gland (9) and on the outside
of the piston (6). (When installing teflon O-ring (5) on piston, it is recommended that it be
installed with the use of a cone placed against the piston. The cone may be constructed of
plastic or metal from dimensions shown in Figure 5.)
(b) To assemble the piston rod assembly, install the following parts on the rod (12) in order,
the roll pin (14), return spring retainer washer (15), return spring (13), packing gland (9)
with new O-rings, seal (10), piston (6) with new O-ring, spring (4) and retainer bushing (3).
Secure these pieces with the small snap ring (2) on the end of the rod.
(c) Insert piston rod assembly in cylinder (1) and secure packing gland with snap ring (11).
(d) Install the cylinder per Installation, below.
(5) Installation
(a) Install the brake handle assembly between its mounting bracket and secure with bolt,
washers, nut and cotter pin. Washers should be placed on each side of the handle,
between the bracket, and under the nut.
(b) Place the cylinder (10) between the mounting bracket and secure the base end with bolt,
washers, nut and cotter pin. This, too, should have washers placed on each side of the
cylinder and under the nut.
(c) Connect the rod end of the cylinder to the brake handle with a clevis pin and thin washers.
Safety the clevis with a cotter pin.
(d) Connect the pressure line to the fitting at the bottom of the cylinder.
(e) Connect the inlet supply line (8) to the fitting at the top of the cylinder and secure with
spring clamp.
(f) Bleed the brake system per Bleeding Brakes, below.