Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 830 / 1956

PAGE 4
Feb 28/07
4F4
32-40-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
4. Bearing Cup
A. Removal
(1) Insert wheel half into boiling water for 15 minutes or place in an oven not exceeding 250° F
(121° C) for 15 minutes.
(2) Remove from source of heat and invert wheel half. If the cup does not drop out, tap the cup
evenly from the axle bore with a fiber drift pin or suitable arbor press.
B. Installation
(1) To replace a new cup, apply one coat of zinc chromate primer to wheel half bearing bore.
(2) Insert wheel half into boiling water for 15 minutes or place in an oven not exceeding 250° F
(121° C) for 15 minutes. Chill new bearing cup in dry ice for a minimum of 15 minutes.
(3) Remove wheel half from source of heat and bearing cup from dry ice. Install the chilled bearing
cup into the bearing bore of the heated wheel half. Tap gently to seat evenly in place, using a
fiber drift pin or suitable arbor press.
5. Brake Adjustment and Lining Tolerance
No adjustment of the brake lining clearance is necessary as they are self-adjusting. Inspection of the
lining is necessary, and it may be inspected visually while installed on the airplane. The linings are of the
riveted type and should be replaced if the thickness of any one segment becomes worn below 0.100 of
an inch or unevenly worn.
6. Wheel Brake Assembly (See Figures 3 and 4.)
A. Removal and Disassembly
To remove the brake assembly:
(1) Disconnect the brake line from the brake cylinder at the tube fitting.
(2) Remove the cap bolts that join the brake cylinder housing and the lining back plate assembly.
Remove the back plate from between the brake disc and wheel.
Anchor Bolt, Removal and Installation
Figure 3