Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 133 / 881

Figure 21-12. Spark Plug Gap Adjustment
B. Install the blower inlet adapter in the same orientation as before removal.
C. Place the combustion air blower assembly in position in the attaching clamp so the air tubing can be
connected and slide the tubing into position at the point where it was disconnected during removal. Do not
tighten until after tightening the motor in the attaching strap.
D. Tighten the blower motor mounting strap securely making certain the air tubing is in proper alignment.
E. Secure the air tubing by tightening the clamp or installing the sheet metal attaching screws.
F. Connect the wire lead at the quick-disconnect terminal.
G. Connect the ground lead securely to the mounting bracket.
H. Check motor operation. By disconnecting the wire at the No. 3 terminal on heater terminal strip, blower can
be operated without fuel flow to the heater.
SPARK PLUG.
1. Removal: (Refer to Figure 21-18.)
A. Remove the screws in the nose and lower the nose cone gaining access to the spark plug area of the
heater assembly.
— Note —
Insure that heater electrical circuits are de-energized.
1
1. SPARK PLUG
2. SEATING SURFACE
3. COMBUSTION TUBE ASSY
4. GROUND ELECTRODE
5. JACKET ASSEMBLY
6. COMBUSTION HEAD ASSY
7. MEASURE
8. GASKET
6
7
8
425
2
3
4
5
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
2 1 - 4 3 - 1 2
Page 21-22
Revised: May 15, 1989
1F13
PIPER AIRCRAFT