I finally ordered the new fitting to replace the leaking one on my truck (it's only been leaking for almost a month now ). My question is how do I go about pulling the old fitting off and putting new fitting on? The old fitting is a 45*-8 swivel end. I'm replacing it with a straight -8AN hose end fitting. This first pic is the new fitting. Thanks for the help yall.

 

This is the fitting I'm replacing. I've marked on it where it is leaking from.

 

Not sure exactly what is causing the leak on the fitting in the picture. However that made me think of something. A lot of guys will try and use a real AN fitting and screw it on to an automotive fitting. The threads will match but the tapers do not. Automotive fittings have a 45 degree taper while the AN (aircraft) fittings have a 37.5 degree taper. This often leads to leaks, specially with higher pressures.
Do NOT mix and match.

 

They are all automotive fittings. Purchased from Summit Racing. They are Earl's Products something or other (can't remember anything past Earl's Performance). I just used AN as a general term. Sorry for the confusion.

 

what does that fitting go to?
DM01

 

It goes into the inlet side of the PE4200 pump. Funny thing about the leak is that when the truck is running, it doesn't leak. When it's off and just sitting there, it leaks like a sivv. If the front of the truck is facing up hill, the leak is a little better, but still pretty bad. If the front is facing downhill, it's bad. Flat ground is pretty bad to.

 

God I love making up lines with high performance fittings! I had a couple of dragsters and working on the plumbing systems was always my favorite. The fitting is now attached to a #8 braided line I take it? Did you make up the lines from the begining? If so they just come apart in the reverse order. The original EARL's end 45 degree #8 pn804608 has an outer alm hose cover, you need to hold that end with a wrench, or better a vise( pad the sides,so not to scratch finish). Then with a wrench un-screew the main fitting ( it is the hecksagone shaped piece above the hose cover), it might be necessary to pull as you un-screew. When making up new lines, you will need to oil the threads of the fittings, and the insides i of the hose. good luck.

 

Yeah. -8 braided line. I did not assemble them the first time. I bought them pre cut and assembled. So I need to oil the threads on the new fittings and oil the inside of the hose? I'm guessing silicone spray.

 

Check this for installation instructions.
Just reverse for disassembly.

http://www.russellperformance.com/automotive/index.html

Click on Hose & hose ends

Then How to assemble.