Piper COMANCHE PA-24-180 Service Manual page 256

FIGURE 6-31. REPLACING BRAKE DISC
d. Slide the brake disc (4) on the wheel and posiion the cylinder housing agins the disc.
e. Secure the cylinder housing ro the rorque plae with the 3 cap bolrs ( ) ad safety.
f.
Connect the brake line mo the brake cylinder housing.
g. Bleed the brake system as described in paragraph 6-88.
NOTE
The firt three or four brake applications, after brake relinmg, should be
moderate to allow the resins in the lining to burn out slowly. The
burning out or resins is also the determine factor in the useful life of the
brake lining and if high speed stops re avoided, whenever possible,
brake lining life and brake performance will be considerably improved.
6-87. Replacement Of Wheel Brake Disc. (Clevand)(Refer to Figure 6-3 1.)
Riveted Brake Disc.
a.
Remove eight rivets attaching brake disc to inner wheel half by chiseling off heads inside drum
and punching them out.
b. Place wheel half assembly into boiling water for 5 minutes and remove disc from wheel casting by
use of pry bars.
c.
Clean casting thoroughly and apply heavy coat of zinc chromace paint in brake disc recess.
d. Place wheel casting mro boiing water for a few minutes, remove and insert new replacement brake
disc into the expanded wheel. Ascertain that brake disc is properly seared in recess in wheel half.
e.
Clamp wheel half and brake dis assembly in vise and locate eight 3/16 inch drill, drill through disc
with an 11/64 inch dnll. and then re-drill with a 3/16 inch drill.
f.
Rivet wheel half to brake disc with eight AN425 AD6-7 rivets. Set nver from both ends to be
cerrain rivet has properly filled the hole and file nver heads flush with tre seat and paint.
LANDING GEAR AND BRAKE SYSTEM
ISSUED: 8/18/72
IK16
PIPER COMANCHE SERVICE MANUAL