CAUTION:

ATTENTION INSTALLER:

1.- FUEL SYSTEM PRESSURE NOT TO EXCEED SPECIFIED MAX. VALVE PRESSURE.

2.- NOTE SOME LATE MODEL FUEL INJECTION SYSTEMS MAY EXCEED SPECIFIED PRESSURE.

NOTES:

1.- Allwirring to be 16 GA. or Heavier

2.- Required fuel lind I.D

                                                                                                  Fuel System

             Valve P/N        Fuel Supply           Fuel Return                Pressure Max. (PSI)

42-159               3/8"                        5/16                                       65

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I.- GENERAL INFORMATION:

     The pollak 42-159 selector valve is intended for use only in fuel systems operating below specified max. valve pressure (see note 2 above) and with:

• Vehicles with one main and one auxiliary fuel tank.
• Vehicles with fuel return lines (except 42-151 valve)
• 12 VDC electrical systems ( min.open-circuit voltage at valve connector, 11VDC)
• Vehicles with in-tank fuel pumps or vehicles with a single fuel pump between the valve and engine.
• Ambient temperatures between -40oF and +180oF.
• Gasoline and DIESEL fuel systems only.
• Not for use in systems operating or having the potential to develop over specified max.
• Do not allow valve to remain dry (no fuel) for extended time period.

II.- INSTALLATION INSTRUCTIONS:

• The electrical and fuel systems should be connected to the valve as shown above.  Choose a protected location near the original fuel lines and using proper length 5/16-18 bolts, securely  mount the selector valve to the chassis or other solid mounting surface. Orient. It such that the side of the valve with the four ports points towards the fuel tanks. Rout the auxiliary tank's source and return lines to the valve. Drain the fuel inthe main tank and cut the original fuel lines, be prepared to catch and safely store any fuel spilling from the cut line, using properly tightened "WORM" style those clamp and fuel-approved flexible fuel hose, connect the fuel lines to the to the proper ports on the selector valve. Install fuel filters in the source lines as shown. The fuel line routing should minimize the number of bends and have the largest possible radil to minimize the flow restrictions.

• Choose a position on the dash and mount the 34-592 toggle switch and 42-201 face plate. Cut the original wire from the fuel tank sending unit to the fuel gage and connect both ends to the 42-203 connector as shown. Connect the new tank's sending unit to the connector. Install the toggle switch as shown connecting one pair of terminals to a good ground and the other pair of terminals to +12 volts through a 10 amp fuse. Connect the middle terminals on the switch to the connector as shown, maintain the orintation betwwen the switch's key and the electrical connections. All electrical connections must be secure and the splices to the 42-203 connector should be sure. Electrically insulate adn sealed to prevent corrosion of the splices. Insure that the 42-203 connector locking tab is fully engaged with valve's mating connector for porper connection adn moisture seal.

• Doble check the systems to be sure all the electrical and fuel connections have been istalled correctly, then place a small quazntity of fuel back into the fuel tanks to check the system for leaks. After it has been determined there are no fuel leaks, start the vehicle engine and switch the tanks to determineif the valve is functioning properly, check the gas gage when transfering between tanks for propper fuel level indication, after it has been determined everything has been istalled propperly refill the fuel tanks.

III.- VALVE OPERATION:

• With+12 VDC to terminal E and  ground to D the fuel will flow from the main fuel tank thru the filter thru the valve, to the engine and return back thru the valve to the main fuel tank reverside the polarity to terminals E and D will cause the fuel to flow the auxiliary fuel tank thru the filter, thru the valve to the engine and return back thru the valve to he auxiliary fuel tank.