REMOVAL & INSTALLATION
See Figures 1 through 6
Never smoke when working around gasoline! Avoid all sources of sparks or ignition. Gasoline vapors are EXTREMELY volatile!
- Disconnect the fuel lines from the inlet and output sides of the fuel pump.
- Plug these lines to prevent gasoline from leaking out.
- Unbolt the retaining bolts from the fuel pump and remove the fuel pump from the engine.
- Remove the old gasket from the engine and/or fuel pump.
- Clean all mounting surfaces.
- Using a new gasket, install the fuel pump. Installation is the reverse of removal.
See Figure 7
- If leakage is not apparent, the following pressure test should be performed.
- Insert a "Tee" fitting into the fuel line at the carburetor.
- Connect a 6 in. piece of hose between the "Tee" fitting and a pressure gauge.
- Vent the pump for a few seconds to allow the pump to operate at maximum capacity.
- Connect a tachometer and start the engine. Allow the engine to run at idle speed. The fuel pump pressure should be 3.5-5.0 (6-cylinder) or 5.0-7.0 psi (V8s). When the engine is stopped, the pressure should return to zero very slowly. If it rapidly or instantly drops to zero, a leaky outlet valve is indicated.
- Disconnect the fuel line from the carburetor. Place the end of the line in a container holding at least 1 quart.
- The fuel pump should pump our 1 quart in 1 minute or less at 500 rpm.