3c. Other requirements include being vented to atmosphere. While the fuel pump can be installed inside a
reservoir or fuel surge tank, the maximum allowable tank pressure is 20 PSIG. A vacuum
CANNOT
be allowed
to form inside the tank in
ANY
instance! Fuel Pump failure will result if a vacuum is formed during operation.
3d. Measure and inspect the area of intended installation as described in Step 3b herein. Fabricate main opening
and 10 fastener locations as shown in upper right diagram on previous sheet. Flange area and fasteners
(typically #10) must be strong enough to prevent warpage during assembly that could lead to fuel leaks at the
flange. Typically, a flange can be welded to the tank as typical tank wall thickness are relatively too thin to
provide resistance to warpage. Once the 3.31 inch diameter hole is placed in the fuel tank, the Fuel Pump may
be used as a template for marking the 10 fastener locations. Installer is responsible for all fabrication to mate
to flange of Fuel Pump.
3e. Using a straight edge and a tape measure, measure the depth of the fuel tank as shown in the figure below.
Write down this value here:
________________
INCHES
then take this above value and subtract:
8.063
(8-1/16) INCHES.
This is the new value for the length of
the tube measurement for cutting (in
Step 3f
, herein). Write down this new value here (for convenience):
________________
INCHES
3f. Using the calculated value from Step 3e
(second value obtained, after subtraction),
measure and mark the Pick-Up Tube Assembly
as shown above-right. Use a Pipe Cutting Tool,
to cut the tube at the marked position, to
achieve the correct installation length for the
Pick-Up Tube Assembly as measured in Step
3e. Deburr the end of the tube, to remove any
hanging chips.
3g. Install one of five Port O-rings onto Adapter
Fitting. Thread the Adapter Fitting into the Inlet
of the Fuel Pump (see location, right).
3h. Slide Compression Nut and Compression
Ferrule over Pick Up Tube (see right). Slide
Pick Up Tube into Adapter Fitting as shown.
Thread Compression Nut into Adapter Fitting,
and toque assembly together to set Ferrule.
Straining Filter can then be installed.
110021251-1, Rev B Sheet 5 of 8
THE FLANGE OPENING AS SHOWN.
IN STEP 3e. PERFORM THE
CALCULATION TOO
THE MEASURED VALUE ABOVE
OF TANK AT THE CENTER OF
USING STRAIT EDGE AND TAPE
MEASURE, MEASURE THE DEPTH
FOR CONVIENIENCE, WRITE
READING FOR DEPTH
IS ON TAPE MEASURE,
AT END OF ARROW SHOWN
MEASURE THE
CUT LENGTH FOR
PICK-UP TUBE FROM
THIS SURFACE
AS SHOWN
Slides over Tube.
seals between Fitting and
Adapter Fitting
O-ring installed on threads,
Inlet of Fuel Pump.
against step shown here.
Compression Nut
Inlet
Fuel Pump
Tube slides into fitting, resting
Compression
Ferrule (5/8" Line).
Straining Filter installs here.
SINGLE USE
ONLY!
93901 Fuel
Pump
