Piper SARATOGA PA-32-301 Maintenance Manual page 331

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
INSPECTION OF NOSE WHEEL ASSEMBLY.
1. Visually check all parts for cracks. distortion. defects and excess wear.
2. Check tie bolts for looseness or failure.
3. Check internal diameter of felt grease seals. Replace the felt grease seal if surface is hard or gritty.
4. Check tire for cuts. internal bruises and deterioration.
5. Check bearing cones and cups for wear and pitting and relubricate.
6. Replace any wheel casting having visible cracks.
ASSEMBLY AND INSTALLATION OF NOSE WHEEL. (Refer to Figure 32-8.)
1. Ascertain that the bearing cup for each wheel half is properly installed. Install the tire with tube on the
wheel half with the valve stem hole and then join the two wheel halves. Install the through bolts with the
ashers and nuts to the valve stem side. torque nuts to 150 inch-pounds and inflate tire. (Refer to Chapter 91.)
2. Lubricate the bearing cones and install the cones and grease seal assembly. Secure with retainer rings
or snap rings.
3. Replace the wheel fairing by turning sideways and slipping it up over the fork assembly.
4. Place the spacer tubes one on each side of the wheel and install unit in fork. Align and slide the axle
tube through the spacer tubes and wheel assembly. Reinstall the axle plugs and rod with washer and nut.
Tighten the nuts until no side play is felt. yet allowing the wheel to rotate freely.
5. Turn fairing so it sill fall into place and secure. (Refer to Removal and Installation of Nose Gear
Fairing.)
BRAKES.
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. Linings of the riveted type should
be replaced if the thickness of any one segment becomes worn below .099 of an inch or is unevenly worn.
Linings of the "snap-on" heavy duty type should be replaced when the expansion groove is no longer visible.
REMOVAL AND DISASSEMBLY OF BRAKE ASSEMBLY. (Refer to Figure 32-9.)
1. To remove the brake assembly. first disconnect the brake line from the brake cylinder at the tube
fitting.
2. Remove the two 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.
3. Slide the brake cylinder housing from the torque plate.
4. Remove the pressure plate by sliding it off the anchor bolts of the housing.
5. The piston may be removed by injecting low air pressure in the cylinder fluid inlet and forcing the
piston from the housing.
6. Check anchor bolt for wear.
7. Remove anchor bolt by the following procedure:
A. Position cylinder assembly on a holding fixture. (Refer to Figure 32-10. Step A.)
B. Use a suitable arbor press to remove the anchor bolt from the cylinder body.
32-43-02
Page 32-19
Revised: August 11. 1983
2C14