Piper SARATOGA PA-32-301 Maintenance Manual page 332

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
NOTE
ON OLDER CYLINDERS (THOSE WITH TAPERED HOLE AND BLEEDER SEAT) TORQUE
BLEEDER SEAT 75 TO 90 IN -LBS ON NEWER CYLINDERS (THOSE WITH A STRAIGHT
TAPERED HOLE. BLEEDER SEAT HAS O-RING) TORQUE ONLY UNTIL O-RING SEALS
Figure 32-9. Brake Assembly
8. Install anchor bolt by the following procedure:
A. Support anchor bolt in a holding fixture. (Refer to Figure 32-10. Step B.)
B. Align cylinder body over anchor bolt. (Refer to Figure 32-10. Step C.)
C. Use a suitable arbor press and apply pressure on the spot face directly over the anchor bolt hole.
(Refer to Figure 32-10. Step D.)
CLEANING. INSPECTION AND REPAIR OF BRAKE ASSEMBLY.
1. Clean the assembly with a suitable solvent and dry thoroughly.
2. Check the wall of the cylinder housing and piston for scratches. burrs. corrosion. etc.. that may
damage O-rings.
3. Check the general condition of the brake bleeder screw and lines.
4. Check the brake disc for grooves, scratches or pits. Minimum thickness of Disc 164-20 used on Wheel
Assembly 40-86B is .205. (Refer to Figure 32-11.) A single groove or isolated grooves up to .031 of an inch deep
would not necessitate replacement, but a grooving of the entire surface would reduce lining life and should be
replaced. Should it be necessary to remove the wheel disc. refer to Removal and Disassembly of Main Wheel.
5. Lining may be removed from the backing plates by drilling or punching out the old rivets. and
installing a new set using the proper rivets and a rivet set that will properly stake the lining and form a correct
flare of the rivet. (A rivet setting kit is available through Piper Dealers under Part Number 754 165.)
6. After replacing brake lining. they should be conditioned as follows:
A. For Cleveland brake no. 30-65. perform a minimum of six light pedal effort braking applications
from 25 to 40 MPH. allowing the brake discs to partially cool between stops.
B. For Cleveland brake no. 30-83. perform three consecutive hard braking applications from 45-50
MPH. Do not allow the discs to cool substantially between stops.
32-43-03
Page 32-20
Revised: August 11. 1983
2C15