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HOLLEY ELECTRIC FUEL PUMP
12-805, 12-806, & 12-816
REPAIR KIT
– INSTRUCTION SHEET 199R7926
This repair kit is designed to repair the mechanical portion of the electric fuel pump only. The electrical portion (top part) should
not be disassembled because special equipment is necessary for re-assembly.
Before removing the pump from the car, check:
A. The voltage at the pump to assure 12 volt supply
B. The fuel line for any obstruction. (Use compressed air to blow line free.
CAUTION:
disconnect fuel line from
carburetor before using compressed air.)
C. The fuel filter for free flow
D. The pump motor by turning on the pump and listening for a hum from the top of the unit. If there is no hum, pump
electrical system should be checked by a competent repairman.
REPAIRING THE PUMP:
The following is a step-by-step procedure for repairing and cleaning the Holley electric fuel pump. Do all disassembling on a
clean bench. Read all instructions thoroughly and completely before starting.
1. Remove pump from car. (There is no need to remove fittings from pump.
2. Remove five screws from bottom of pump.
3. Holding the pump in an upright position, remove the bottom plate. Remove the upper plate gasket and rotor stop plate.
Note the exact position of the rotor, rotor vanes, screen, and relief valve arrangement for re-installation. Remove
screen (note position of screen). Remove rotor vanes and rotor by inverting the pump. Lay all pieces on a flat clean
surface. Save all parts.
4. Remove the pressure relief screw. The screw is spring loaded. Remove the spring and relief plunger. Save all parts.
5. Clean the base housing with any good quality carburetor cleaner (spray type only) or lacquer thinner.
CAUTION:
DO NOT immerse the entire unit in any liquid. Immersion could damage the electrical circuitry.
Clean any loose Teflon tape, sealing compound, etc. from the inlet and outlet. Blow the entire base dry with
compressed air.
