Reassembly Of Combustion Air Blower Assembly (30,000 Btu) - Piper SENECA II Service Manual

PIPER SENECA II SERVICE MANUAL
o. Install the ignition assembly (2) on the jacket assembly (5) with the four screws and lock
washers. Connect the high voltage lead to the spark plug and tighten it to 20 foot-pounds.
p. Attach the overheat limit switch (25) and spacer gaskets (27) to the jacket assembly (5) with the
two screws, lock washers and flat washers. Tighten the screws securely.
q. Attach the cycling switch (24) to the jacket assembly (5) with the two screws, lock washers and
flat washers.
r. Place the terminal strip insulation (36) in position on the jacket (5), followed by the terminal
strip (35). Secure both parts by installing the two screws and lock washers. The two screws are located at
two diagonal corners of the terminal strip.
s. Center the fuel fitting in jacket opening. Position the fuel fitting shroud gasket (29) and washer;
then install the nut (38) finger tight. Insert a 3/4 inch open-end wrench inside the jacket and hold the
fuel-tube fitting while tightening the nut (38) with a 3/4 inch deep socket. Install the fuel solenoid elbow
(34).
t. Rotate the combustion air switch (26) onto the threaded fitting on the combustion air tube and
tighten it firmly.
u. Connect the tube to the elbow fitting (33) on the combustion air pressure switch (26).
v. Install the wiring harness and connect all wire leads to their respective terminals. (Refer to the
wiring diagram, Figure 13-7 .) Place the grommet ( 41, Figure 13-18) in position in the jacket (5); locate the
ventilating air blower ( 11) at the end of the jacket. Thread the quick-disconnect on the wiring harness
through the grommet and connect it to the mating connector on the motor lead.
w. Place the blower housing in position on the jacket assembly (5) and secure it by installing the
four screws (20), if removed at disassembly. This operation is easier if the screws (20) are started into their
threads and the blower housing rotated into place, allowing the screws to enter the notched openings in
edge of blower housing. Tighten all screws securely.
x. Install the elbow adapter (23) with the screw.
y. Install the upper fuel shroud box
!(
10) with the screws. Ascertain that the grommet ( 40) is
installed.
13-66. REASSEMBLY OF COMBUSTION AIR BLOWER ASSEMBLY (30,000 BTU). (Refer to Figure
13-20.)
a. Place the spacer (24) over the. end of the motor shaft and attach the motor assembly (25) to the
back plate (20) with the two self-locking nuts (21 ), flat washers (22) and lock washers (23).
b. Slide the blower wheel (19) on the motor shaft and tighten the set screw lightly against the flat
portion of the motor shaft.
c. Place the blower housing (15) in position on the back plate (20) and install screws (16) and lock
washers (17).
d. Attach the radio-noise filter (11) at the point shown with the screw (12) and lock washer (13).
The motor ground lead terminal (28) can be grounded to the motor support bracket (3).
e. Attach the inlet flange (8) and blower inlet adapter (2) to blower housing (15) with three screws
(9) and lock washers (10).
f. Loosen the Allen-head set screw in the blower wheel ( 19) and shift the wheel on the motor shaft
until it is near the inlet in the blower housing. Tighten the set screw securely. The blower wheel should just
clear the inlet flange when rotated at full RPM. Spin the blower wheel by hand for clearance check; then
apply proper voltage to run motor and recheck for proper clearance.
g. Slide the blower outlet adapter (5) on the blower housing outlet ( 15) and install the two screws
(6) and lock washers (7).
Reissued: 10/11/79
HEATING AND VENTILATING SYSTEM
2L1