Finally getting around to doing this. This writeup will show you the proper way to make AN hose. Wether it is for fuel line, transmission line or whatever. It all has the same concept. Enjoy!
Today we will be using -6 AN Braided hose and demonstrating how to asemble an AN hose. The fittings we will be using are a -6 AN hose fitting. And the fitting on the regulator side is a 3/8 NPT to -6 AN. First off we need something to cut Braided/rubber hose. I perfer a dremel equiped with a heavy duty cutoff wheel as shown below.This provides a nice clean cut wich is important for this process to work smoothly.
If your looking at the end of an AN hose there are only three parts. The hose. And the 2 fittings that make up the actual AN fitting. The 2 fittings are shown below.
Ready to get this thing going? Me too!
First you will need to cut the hose to the needed length. Make sure you cut straight so the hose will seat properly in the fitting (will go more in depth later). Also after you finish the cut make sure there is no debris in or around the hose. Rubber shavings ect. The cut itself does not have to be absoultly perfect. You will naturally have a little fraying of the braid on the hose. You just don't want a lot because it will prevent you from inserting the hose into the fitting. The final product should look similar to this picture as shown below.
Next we will be putting the first fitting on the hose. The first fitting looks like this.As you can see if you look inside the fitting it actually has threads. This is to help aid the insertion of the ruber hose. When rubber hose is present you can basicly just screw this fitting on. As you can imagine the threads probably don't grip braided hose very well. So you will basicly have to push it on when working with braided hose.
Next step is to insert the fitting onto the hose. Make sure that the hose goes all the way into the fitting.Below is a simulation of how far the hose will go into the fitting. This is why it is important that you have to have a straight cut.Not perfect just no 45* angles lol. You want the hose to seat properly against the fitting.
Insert fitting on the hose. It will not just slip on so be patient. It is a tight fit. This is why I also stress that it is important to have a minimal amount a ''fray''. If you have a lot, forget about the hose going into this fitting. You may as well re-cut and start over.
Next is the second fitting. This actually screws through the first fitting and threads itself into the rubber hose to make a leak free seal while the first fitting is there to prevent the hose from expanding.You will need wrenches to do this. One to hold the first fitting and one to screw in the second. The proper tool would be to use AN wrenches but they are expensive.Make sure you tighten the second fitting all the way down.Assemble as shown below.
Last well use this example for demenstration of how to connect the male AN fitting to the Female hose fitting. This is comming from a fuel regulator for a carburated engine (my mustang).
Done. Professional leak free hose. Excuse the beat up hoses and fittings as they were laying around on the ground outside and are for example only. I'll tell you this. I leaned on my own and have never had a hose leak yet. Like I said in one of the other posts around here. If you can screw a nut and bolt together you can asemble an AN hose.
Originally Posted by TDCRacing
