Power Steering Pump Fit

[Ocalafox]

During my rebuild I decided to replace the 208,000 mile old ps pump. I bought a replacement from Advance auto but the inlet for the high pressure line is smaller than on the factory pump. If I remove the ~1.5 inch factory interface from the end of the high pressure line, that fitting will mate to the new pump but it doesn't feel like a "leak free" seal. Please advise, I'd like to fire up the new motor today.

Thanks,
vann

 

[jrichker]

This may or may not be helpful, but here goes...

Each hose uses an O ring on each end to seal them. The hoses will swivel when they are installed and tightened into place. That is why there are O rings on the fittings. The O ring is the part that actually makes the pressure seal. If you slide the nut all the way back as far as it will go, you will see the O ring and the groove cut into the center section of the fitting.

Sometimes you will get some white Teflon rings with the pump or rack. The rings go on the threaded part of the fitting to reduce or prevent small leaks. They are not meant to seal the pressure part of the line or substitute for the rubber O ring. Heat the white Teflon seals in hot water and they will be easier to install. You can install the fittings without them and not have any leaks if the O rings seal good.