386
SUPPLY
REGULATOR
FUEL
SUPPLY
PIPER SENECA II SERVICE MANUAL
0-60
PSIG
GAGE
1/J
FLOW
0-15
PSIG
GAGE
FUEL
NOZZLE
S----0-
ELECTRICAL
-------
POWER
SUPPLY
Figure 13-14. Test Setup for Fuel Regulator and Shutoff Valve
13-43. INSTALLATION OF FUEL REGULATOR.
a.
Position the regulator into position between the fuel line and fuel pump. Ascertain
that
the inlet
side
of
the regulator is towards the fuel pump.
b. Connect the regulator
to
the pump and the heater fuel line
to
the regulator outlet port.
c.
Connect the electrical leads from the regulator.
d. Operate the heater
to
make sure the unit
is
functioning properly. (Refer
to
Paragraph 13-5,
Heater System - Operational Test.)
13-44. HEATER FUEL
PUMP
MAINTENANCE. (Refer
to
Figure 13-15.) The maintenance required for
this type
of
fuel pump
is
very limited, consisting
of
inspection and replacing parts that are worn
or
broken.
13-45. REMOVAL OF HEATER FUEL
PUMP.
The heater fuel pump is located below the cabin floor
panel between the main and rear spar on the right side
of
the cabin.
It
is
enclosed in a fiberglass
compartment which has a removable access cover.
a.
Ascertain
that
the left fuel tanks are empty and the fuel selector controls are in the OFF
position.
b. Disconnect the electrical lead from the pump.
c.
Disconnect the fuel line from the inlet end
of
the pump and the regulator from the outlet end.
Cap all open fuel lines
to
prevent contamination.
d. Remove the bolts which secure the pump
to
its mounting bracket.
Reissued: 10/11/79
HEATING
AND
VENTILATING
SYSTEM
2K8
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