Brake Assemblies; Description And Operation - Brakes; Fault Isolation - Brakes - Piper Cheyenne IIIA Airplane Maintenance Manual

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
B. Brake Assemblies
1. Description and Operation - Brakes
The brakes are hydraulically actuated by individual master cylinders mounted on the left and right
sets of rudder pedals. The brake reservoir is accessible through an access door on the upper right
portion of the nose section.
For further information on servicing of brakes, refer to front of manual for vendor publications list.
2. Fault Isolation - Brakes
Fault
Hydraulic fluid leaking
from piston area.
Fluid leaking from
bleeder valves or
reducer fitting.
Insufficient clearance
(i.e. DISK CANNOT BE
MOVED WITH HANDS).
CHART 2
FAULT ISOLATION (BRAKES)
Cause Remedy
Wom packing(s). Replace packing.
Damaged piston(s) or Replace piston or repair
piston bore(s).
bore.
Loose bleeder valve(s). Tighten bleeders.
Damaged bleeder valve. Replace valve.
Damaged reducer fitting Replace reducer or packing.
or packing.
Heat stack warped beyond Repair or replace parts out of
tolerance. tolerance per REPAIR.
Air in system. Properly bleed brake system
and hydraulic lines.
EFFECTIVITY:
PAGE
12
32-40-00
040-999
Jan
10/90
32-40-00