Fass Hpfp

[Cumminscanuk]

I have an HPFP on my WVO system running at 15 psi. I have obtained a 20 psi spring to upgrade it but don't know how to change the spring. Can anyone advise me how to do it please?

 

[macgruber]

take the return line off and the fitting on the pump take that off and the spring will behind that might need a o ring pick to get it out

 

[FASSAshley]

There should be 4 bolts holding the pump together and you will remove the bolts and the block and motor should come apart from the block. You should see the ball and spring between the two components.

Thank you