Piper COMANCHE PA-24-180 Service Manual page 257

FROM
OVER
PRESSURE FLOW
POT CONTAINER
FIGURE 6-32. BLEEDING BRAKES
Non Riveted Brake Disc.
a. Place wheel half assembly into boiling water for 5 minutes and remove disc from wheel casting by
use of pry bars.
b. Clan casting thoroughly and apply heavy coat of zinc chromate paint in brake disc reces.
c. Place wheel casting into boiling water for a few minutes, remove and insert new replacement brake
disc into the expanded wheel. Ascertain that bolt holes are ligned and brake disc is properly seated.
6-88. Bleeding Procedure. (Refer to Figure 6-32.) If the brake line has been disconnected for any reason, it
will be necessary to bleed the brake and line as described below.
a. Place a suitable container at the brake reservoir to collect fluid overflow.
b. Remove the rubber bleeder fitting cap located on the bottom of the brake unit housing on the
landing gear.
c. Slide a hose over the bleeder fitting, loosen the fitting one turn and pressure fill the brake system
with MIL-H-5606 fluid.
NOTE
By watching the fluid pass through the plastic hose at the top of the
brake reservoir,
it
can be determined whether any air has entered the
system. If air bubbles are evident, filling of the system shall be
continued until all of the air is out of the system and a steady flow of
fluid is obtained.
d. Tighten bleeder fitting and remove the hose. Check brakes for proper pedal pressure.
e. Repeat this procedure on the other gear.
f. Drain excess fluid from reservoir to Fluid Level line with a syringe.
LANDING GEAR AND BRAKE SYSTEM
REVISED: 4/10/81
1K17
PIPER COMANCHE SERVICE MANUAL