PIPER
SENECA
II
SERVICE
MANUAL
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 distort the spray pattern and cause
malignition
or
improper combustion.
t. Remove the three screws and rubber grommets from the blower housing ( 12).
u. Slide the ventilating air blower
motor
out
of
the blower housing with the
motor
bracket assembly
( 19) and blower wheel ( 17) 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 ( 19), fasteners ( 43) and ground bracket ( 44).
v.
Remove the screw and lock washer
to
free the capacitor assembly ( 18) with attached leads.
13-59. DISASSEMBLY
OF
COMBUSTION AIR BLOWER ASSEMBLY (45,000 BTU). (Refer
to
Figure
13-21.)
a.
Remove
the
combustion air blower inlet adapter (2) by removing the screw ( 18).
b. Remove screws (18); then separate the outer housing (3) from the inner housing (8) and free
the
motor
leads and capacitor ( 10) from the inner housing.
c.
Loosen the set screw (6) in
the
blower wheel (7) and slide
it
off
the
motor
shaft.
d. Remove the two hex nuts (17), lock washers (00) and flat washers (16) and slide the inner
housing ( 8)
off
the
motor
through bolts. The spacer ( 15) will drop out.
e. Install new
motor
brushes
as
described
in
Paragraph 13-27, b.
If
the
motor
commutator
is
badly
worn
or
if
the motor
is
defective in any respect,
it
must be replaced.
13-60. CLEANING. (Refer
to
Figure 13-19.)
a. Clean individual metal parts (except those parts containing switches and electrical wiring) and
the
combustion tube assembly by immersing them
in
dry-cleaning solvent, such
as
Stoddard solvent (Federal
Specification P-D-680). A bristle brush should be used to assist
the
cleaning process
if
foreign
accumulations are stubborn
to
remove.
CAUTION
Do
not
attempt
to
buff
or scrape off any deposits on face
of
spray
nozzle. The face
of
the nozzle
is
very susceptible
to
damage from
mishandling. Carefully repeat cleaning process using only a bristle
brush and repeated applications
of
solvent
to
loosen any stubborn
deposits.
b. Use compressed air
or
lintless cloth
to
dry the parts, unless sufficient time is available for them
to
air dry.
c.
Wipe electrical components with a clean, dry cloth. If foreign material
is
difficult
to
remove,
moisten the cloth in carbon tetrachloride
or
electrical contact cleaner and clean all exterior surfaces
thoroughly.
Reissued:
10/11/79
HEATING
AND
VENTILATING
SYSTEM
2K16
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