Instruction/ maintenance manual of the product 12-150 Holley
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HP FUEL PUMPS P/N 12-125 and 12-150 Installation Instructions WARNING! THESE INSTRUCTIONS MUST BE REA D AND FULLY UNDERST OOD BEFORE BEGINNING INSTA LLATION. FA ILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN POOR PERFO RMANCE, VEHICLE DA MAGE, PERSONA L INJURY, OR DEAT H.
4. Connect the fuel line from the tank to the fuel filter and then to the inlet port of the pump . Connect the carburetor delivery line to the outlet port of the pump and to the regulator (for the 12-150) located near the carburetor inlet. See Figure 1.
WIRING: There are 2 methods to wire the pump: (1) To wire the fuel pump with a relay (2) To w ire the fuel pump with an oil pressure s afety switch. (1) WIRING THE FUEL PUMP WITH A RELAY: NOTE: You will need Holley Fuel pump relay kit P/N 12-753 or equiv alent 4-w ire relay.
Figure 3 6. Connect the fuel pump (red lead) to the terminal marked “C”. In this line, add an in-line fuse holder and a 15-amp fuse. 7. Connect the terminal marked “NO” to t he on terminal of the ignition switch. 8. Connect the terminal marked “NC” to the starte r terminal that’s hot ( 12V) during cranking only.
Figure 4 4. Turn the pump upside down, remove the three bolts, and care fully lift off the pump cover followed by the gasket, pump plate, and O-Ring. 5. Very carefully remove the gerotor assembly (both parts) from the pump housing. WARNING! KEEP THE GEROTO R TOGETHER AS A MATCHED SET.
CLEANING THE REGULATOR: Figure 5 1. Loosen the hex nut on the top of the regulator and back the adjusting screw out all the way to relieve tension on the diaphragm spring. See Figure 5. 2. Remove the four screws holding the regulator cover on. The diaphragm and spring will fall out.
An important point after buying a device Holley 12-150 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Holley 12-150 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Holley 12-150 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Holley 12-150 you will learn all the available features of the product, as well as information on its operation. The information that you get Holley 12-150 will certainly help you make a decision on the purchase.
If you already are a holder of Holley 12-150, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Holley 12-150.
However, one of the most important roles played by the user manual is to help in solving problems with Holley 12-150. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Holley 12-150 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
