Reassembly (30,000 Btu) - Piper SENECA II Service Manual

PIPER SENECA II SERVICE MANUAL
13-65. REASSEMBLY (30,000 BTU). (Refer to Figure 13-18.)
a. If removed during disassembly, secure the nipple (37) and elbow (34) to the fuel solenoid (22).
b. Insert the ventilating air motor
(13)
into the motor bracket assembly
(19);
slide the blower wheel
( 17) on the end of motor shaft and rotate it until the set screw is aligned with the flat side of the motor
shaft. Tighten the set screw just tight enough to hold it at this time.
c. Attach the capacitor and leads assembly ( 18) to the motor bracket ( 19) with the screw and lock
washer. Make sure a good electrical ground connection is made at this point.
d. Insert this assembly into the blower housing ( 12) and position it so the long screw is in alignment
with the gap on the inner ring of the motor bracket assembly ( 19). This is the screw used to secure and
align the motor in the bracket.
e. Slide the flat washer and rubber washer into position between the legs of the motor bracket ( 19)
and blower housing ( 12).
f. Make sure all wires are routed and grommeted as they were prior to disassembly and install the
two screws, flat washers, and new grommets at the two lower edges securing the motor bracket assembly
(19).
Then install the grommet, flat washer, nut, and screw in the remaining (upper) corner of the motor
bracket assembly ( 19).
g. Center the motor bracket
(19)
in the housing and tighten the screw to secure it. The motor
(13)
should be positioned in the bracket ( 19) to locate the blower wheel ( 17) properly in the blower housing
( 12). The blower wheel should be positioned so it will rotate freely and just clear the contoured spill plate
in the blower housing. Tighten the Allen-head set screws and spin the blower wheel by hand for a clearance
check. Then apply appropriate voltage to run the motor as a final clearance check.
h. Attach the inlet adapter
(16)
to the end of blower housing
(12)
with three screws and lock
washers.
i.
Place a new rope gasket (31) in position on the exhaust outlet; spring the jacket assembly (5)
open at the seam and insert the combustion tube assembly
(7)
carefully into the jacket. Exercise care to
clear the pressure switch tube in the exhaust outlet and see that the rope gasket (31) is properly located.
Close the gap on the jacket assembly and install screws and lock washers to secure it at the seam. (Two
leads ground under these screws. See notations made during disassembly.) Make sure the tongue and
channel at the seam are in good condition and
a
tight
fit
is effected.
j. Install cable straps at locations noted during disassembly.
k. Remove the spray nozzle (21) from the polyethylene bag. Screw the nozzle into nozzle holder
and tighten to 75-100 inch-pounds. It is very important to torque the nozzle to this value as incorrect
tightening could cause improper heater operation and "drool."
CAUTION
The spray nozzle has a slight protrusion on the nozzle face. If this
area has been struck by any object which would make a dent or
destroy the original contour, the nozzle must be replaced. It
cannot be disassembled for cleaning.
1. Install the gasket (30) and combustion head (6) in the combustion tube (7) and secure with the
screws and washers.
m. Insert the fitting on end of nozzle fuel tube through the opening in jacket (5) and attach the
nozzle holder to the combustion head assembly (6) with the two screws and lock washers. It may be
necessary to place a slight bend in the shrouded fuel tube to permit alignment of screw holes. Be sure to use
a new gasket (28).
n. Using a new spark plug gasket, install the spark plug (32) and tighten to a torque of 28
foot-pounds. Install the grommet (39) in the jacket around the spark plug.
Reissued: 10/11/79
HEATING AND VENTILATING
2K24