PIPER SENECA II SERVICE MANUAL
A932
5
6 7 8 9
10
11
12
6
1.
PUMP,
BODY
7.
0-RING
2.
TUBE,
PLUNGER
8.
WASHER
3.
FILTER
9.
RETAINER
4.
PLUNGER
10.
MAGNET
5.
SPRING
11.
GASKET,
COVER
6.
CUP
VALVE
12.
COVER
Figure 13-15. Heater Fuel Pump
13-46. DISASSEMBLY OF
PUMP.
(Refer
to
Figure 13-15.)
a.
Remove the safety wire that secures the bottom cover (12) to the pump.
b. Using a 5/8 inch wrench, release the bottom cover ( 12) from the bayonet fittings. Twist the cover
by
hand
to
remove it from the pump body (
1).
c.
Remove the filter (3), magnet
(10)
and cover gasket (11).
d.
Remove the retainer spring (9) from the plunger tube (2) using thin nose pliers
to
spread and
remove ends
of
retainer from tube.
e.
Remove washers (8), O-ring seal (7), cup
valve
(6), plunger spring (5) and plunger (4) from the
tube (2).
13-47. CLEANING
OF
PUMP.
a.
Wash
all
parts in cleaning solvent and blow out with air pressure.
b.
If
plunger does
not
wash clean
or
if
there are any rough spots, gently clean the surface with
crocus cloth.
c.
Slosh the pump assembly in cleaning solvent and blow
out
with air pressure.
d. Swab the inside
of
the tube with a cloth wrapped around a stick.
13-48. INSPECTION
AND
REPAIR OF
PUMP.
a.
Disassemble the pump according
to
Paragraph 13-46.
b. The filter usually comes off with the cover; it may stick inside the fuel pump. Carefully remove
the filter and replace it, if distorted.
c.
Check cover gasket and replace if deteriorated.
d.
Check the O-ring seal and plunger spring and replace if worn.
Reissued: 10/11/79
HEATING
AND
VENTILATING
SYSTEM
2K9
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