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INSTALLATION INSTRUCTIONS
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• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 5 - 7 1 2 3 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
MOUNTING PROCEDURE
Step 1
Mount the pump as close as possible to the fuel tank
(at or below the level of the fuel tank pickup) in a well
ventilated area with minimual exposure to road debris.
Avoid exposing the pump and fuel lines to moving parts
and hot surfaces, such as the exhaust system. OT E
ncreasing distance between the pump and tank will
decrease pump efficiency.
Step 2
Using the pump mounting bracket as a template, locate
mounting holes on a solid member, such as the vehicle
shassis. Drill holes for 5/16" bolts. See Figure 1. OT E
To ensure against a potential fire hazard from pump
flooding, mount the pump in a vertical position with the
motor on top.
Step 3
Connect fuel lines as shown in Figure 2 (A, B, C, or D).
If your fuel system requires a fuel pressure regulator,
proceed to the instructions with the fuel pressure regulator.
WIRING PROCEDURE
Wiring the pump to an oil pressure switch will provide power only when the ignition switch is on and the engine
is running. This will prevent the pump from running if your engine stalls. Use 14 gauge wire or larger and be
sure to disconnect the battery ground cable before wiring the pump. Refer to Figure 3 when connecting the
pump to an oil pressure switch.
The pump may be wired directly to the ignition switch "ON" terminal and grounded to the frame or battery.
Refer to Figure 4 when connecting the pump to the ignition switch "ON" terminal.
MAINTENANCE - PUMP DISASSEMBLY
If your pump fails to produce adequate pressure, it may require cleaning. Follow the steps below to disassemble
and clean your Mallory Electric Fuel Pump. Refer to Figure 5 while performing the following steps.
Step 1
Remove the pump from the vehicle and clean pump exterior. Place the pump on its side on a clean work surface.
Scribe or draw a line acrosss the pump housing, port plate and fuel chamber so that you can reassemble the
pump correctly.
Step 2
Remove the two fuel chamber screws from the bottom of the pump. Remove the fuel chamber and port plate.
NOTE: Do not drop the Gerotor from the pump cavity.
Step 3
Separate the port plate from the fuel chamber. Inspect the flame arrestor screen in the fuel chamber and clean
it if necessary.
Step 4
Place your hand beneath the Gerotor and hold the pump in an upright position. The Gerotor should slide out of
the pump housing and into your hand. NOTE: Observe the position of the Gerotor and be careful not to reverse
it when you reassemble the pump.
Step 5
Release the jam nut on the bypass plug. Mark the bypass plug location and count the number of turns required
to remove it. Remove the bypass spring and plunger. Inspect the plunger. The plunger surface should be clean
and slide freely in the chamber. Check the plunger pad and remove any debris embedded in its surface. Reinstall
the bypass spring and plunger. Clean the bypass plug. Apply thread sealant compound to the bypass plug
threads. Install the bypass plug. Tighten the jam nut.
