15. Reach inside the inlet end of the jacket assembly with a 3/4 inch open-end wrench, and while holding the
fuel-tube fitting at the jacket, use a 3/4 inch deep socket to remove the elbow, nut, washer, gasket and fuel
shroud.
16. Remove the two screws and carefully withdraw the nozzle holder from the combustion head assembly,
remove gasket.
17. Remove the six screws and withdraw the combustion head assembly from the combustion tube assembly.
Remove gasket.
18. Remove the screws and remaining cable straps, if not previously removed, from the seam of the jacket
assembly. Note the position of the cable straps as they are removed. Spread the jacket at the seam and
remove it from the combustion tube assembly. This will free the asbestos gasket which can be removed
from the particular part to which it remains attached.
19. Carefully unscrew and remove the spray nozzle from the nozzle holder. Remove the gasket.
— CAUTION —
HANDLE THE NOZZLE WITH CARE TO AVOID DAMAGE TO THE TIP.
THE MATERIAL AROUND THE ORIFICE IS VERY THIN AND ANY
SHARP BLOW ON THE FACE OF THE NOZZLE CAN DISTO RT THE
S P R AY PATTERN AND CAUSE IRREGULAR IGNITION OR IMPROPER
COMBUSTION.
20. Remove the three screws and rubber grommets from the blower housing.
21. Slide the ventilating air blower motor out of the blower housing with the motor bracket assembly and
blower wheel attached. Loosen the set screw in the blower wheel and slide it off the end of the motor
shaft. Then remove the motor bracket assembly, fasteners and ground bracket.
22. Remove the screw and lock washer to free the capacitor assembly (18) with attached leads.
DISASSEMBLY OF COMBUSTION AIR BLOWER ASSEMBLY. (Refer to Figure 21-19)
1. Remove the combustion air blower inlet adapter by removing the screw.
2. Remove screws; then separate the outer housing from the inner housing and free the motor leads and
capacitor from the inner housing.
3. Loosen the set screw in the blower wheel and slide it off the motor shaft.
4. Remove the two hex nuts, lock washers and flat washers and slide the inner housing off the motor
through bolts. The spacer will drop out.
5. Install new motor brushes. If the motor commutator is badly worn or if the motor is defective in any
respect, it must be replaced.
CLEANING OF HEATER COMPONENTS. (Refer to Figure 21-18.)
— CAUTION —
DO NOT ATTEMPT TO BUFF OR SCRAPE OFF ANY DEPOSITS ON THE
FACE OF THE SPRAY NOZZLE. THE FACE OF THE NOZZLE IS VERY
SUSCEPTIBLE TO DAMAGE FROM MISHANDLING. CAREFULLY
R E P E AT CLEANING PROCESS USING ONLY A BRISTLE BRUSH AND
REPEATED APPLICATIONS OF SOLVENT TO LOOSEN ANY STUBBORN
DEPOSITS.
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
2 1 - 4 4 - 0 3
Page 21-33
Revised: May 15, 1989
1F24
PIPER AIRCRAFT
To Next Page
Loading...
Need help?
General
