4. If a repair is being made with Parker-Hannifin unions and tubes without pre-swaged ferrules proceed
as follows:
a. Cut off tubing at a convenient location back from fitting.
b. De-burr end of tube and prepare a short length of tube to splice into line.
c. Screw nut and ferrule onto union until solidly finger tight.
d. Insert tubes into unions, being careful to ensure proper alignment of tubing on union.
e. Using a tubing wrench, tighten nut one and one-quarter turns.
5. After corrective action has been completed perform leak test. (Refer to Inspection and Tightening of
Fuel Line Union Fittings.)
INDICATING
FUEL QUANTITY
REMOVAL OF FUEL QUANTITY TRANSMITTER UNIT
1. Remove fuel tank. (Refer to removal of Fuel Tank.)
2. Disconnect transmitter wire from connection post.
—CAUTION—
The inboard and outboard senders are different units in that one
unit (Piper P/N 550 504) requires fiber insulating washers. When
removing bolts and washers from this unit, be careful not to
damage fiber insulating washers. Make sure when reinstalling
sender to use correct bolts and washers. The fiber washers
insulate unit from tank assembly.
3. Remove bolts and washers securing sender unit to rear surface of tank.
INSTALLATION OF FUEL QUANTITY TRANSMITTER UNIT
—CAUTION—
If both sender units were removed from same fuel tank, ensure
their correct positioning upon reinstallation.
1. Position sender unit with its gasket on aft surface of fuel tank and align mounting holes of unit and
mounting plate.
28 - 41 - 00
Page - 28-13
Reissued: August 1, 1986
2B7
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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