Nose And Main Wheel Assemblies Repair; Main Wheel Assembly View - Piper PA-44-180 SEMINOLE Maintenance Manual

PC27
1. MAIN WHEEL ASSEMBLY
2. WHEEL HALF
3. BEARING CUP
4. BRAKE DISC
5. WHEEL HALF
6. BEARING CUP
7. BEARING CONE
8. GREASE SEAL RETAINER
9. GREASE SEAL
10. SNAP RING
11. GREASE SEAL RETAINER
12. GREASE SEAL
13. GREASE SEAL RETAINER
14. NUT
15. WHEEL THROUGH BOLT
16. WASHER
17, WHEEL BOLT WASHER
18. DUST SHIELD
4. Slide the wheel on the axle and secure with retainer nut. Tighten the nut to allow no side play. yet allow the
wheel to rotate freely. Safety the nut with a cotter pin and install a dust cover.
5. Position the brake lining back plates between the wheel and brake disc and the brake.cylinder on the torque
plate. Install the four bolts to secure the assembly. If the brake line was disconnected, reconnect the line
and bleed the brakes.
REPAIR OF NOSE AND MAIN WHEEL ASSEMBLIES.
Repairs are limited to blending out small nicks scratches. gouges and areas of slight corrosion, plus the
replacement of parts which are cracked or badly corroded.
Remove rust and blend out small nicks, using fine 400 grit sandpaper.
Wheels may also be repainted if the parts have been repaired and thoroughly cleaned. Paint exposed areas
with one coat zinc chromate primer and one coat of aluminum lacquer.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
MINIMUM DISC THICKNESS*
MEASURED AT 3 POINTS TO GET
AVERAGE.
DISC P/N MIN.
*164-22A = .345
*164-46 = .405
10
8
Figure 32-14. Main Wheel Assembly
— Note —
— Note —
Never paint working surfaces of the bearing cups.
15
9
8
7
3
2
5
2H10
4
17
16
14
6
7
11
12 13
10
18
3 2 - 4 3 - 0 0
Page 32-42
Revised: May 15, 1989