Parking Brake Valve Cleaning, Inspection And Repair; Parking Brake Valve Assembly; Parking Brakve Valve Installation - Piper PA-44-180 SEMINOLE Maintenance Manual

2637
1. HOUSING
2. RETAINING RING
3. SLEEVE
4. SPRING
5. O-RING
6. PISTON
7. O-RING
8. GLAND
9. O-RING
10. O-RING
11. WASHER WIPER
12. ROD
13. SPRING
14. WASHER
15. ROLL PIN
CLEANING, INSPECTION AND REPAIR OF PARKING BRAKE VALVE.
1. Clean the valve parts with a suitable solvent and dry thoroughly.
2. Inspect valve and seat surfaces of valve body for excessive wear and corrosion.
3. Inspect the cam assembly for burrs, scratches, excess wear, loose operating lever, etc.
4. Check general condition of valves and springs.
5. Repair to the valve is largely limited to smoothing burred or scratched surfaces and replacing O-rings.
ASSEMBLY OF PARKING BRAKE VALVE. (Refer to Figure 32-18.)
1. Install O-rings on valve cam.
2. Lubricate O-rings with fluid (MIL-H-5606), insert cam into valve body and secure with spring, bushing,
washer and self-locking nut.
3. Install O-ring on the valve, insert valve in hole of out port, install valve spring and secure with outlet fitting.
INSTALLATION OF PARKING BRAKE VALVE.
1. Attach the valve to the bulkhead mounting bracket with screws.
2. Connect the fluid lines to the valve.
3. Connect the control cable to valve lever and determine that when valve lever fits in the closed detent,
parking brake handle is .03 to .06 inch of being full in against stop.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
1
2 3 4
Figure 32-21. Brake Cylinder (10-30) (Toe Brake)
2H18
5 6 7 8 910 11 12
13
14 15
3 2 - 4 4 - 11
Page 32-50
Revised: May 15, 1989