Noticed yesterday when started up coach air pressure was at zero. Today when I started had no air pressure again. As fast as it was leaking I figured It would be easy to find. I did find a hose was leaking around a fitting. I took the fitting off the check valve but can not figure out how to remove the fitting. I tried pushing down on the gray part but that did not work. I tried pulling the gray part and that did not work. What do I need to do to fix this leak?
If it was mine, I would cut the line as close as possible to the fitting on each end of the check valve. Then replace both of the fittings with DOT compression fittings. You will probably have to have no air pressure in order to be able to push the gray part enough to release the air line b
Do I get these at a heavy duty truck parts? Or can I get them anywhere.
Push the gray rings towards the valve while pulling on the black tubing.
I will add to what Craneman said by after pushing down on the gray ring, push down on the tubing before pulling it out. It seemed to make a difference for me when I was working on my air lines. I also used an open end wrench of the appropriate size that fits over the air tubing and rests on the gray ring to help move it. There's horse shoe shaped tools made for removing those fittings.
So after doing this do I cut the very end of the fitting off and push back on? or do I get just cut off and get a new fitting?
Do you think NAPA stocks the fittings?
They make a special tool for getting those shark bite fittings off but I just use a crows foot to
Press them down. You can cut them too. Abandon them all together and get compression fittings from your local HDT supply. My local NAPA Carrie's them too
I hate those damn things, they leak like crazy and should never be used on a Foretravel
This is a kit I keep on hand. Pretty compact case, and hopefully it will contain enough to cover any issues that may arise.
Amazon.com: Legines 38 Pcs Brass D.O.T Air Brake Nylon Tubing Fitting... (https://www.amazon.com/Legines-Brass-Tubing-Fitting-Assortment/dp/B07DKX57V7/ref=sr_1_5?keywords=DOT+fitting+kit&qid=1664585332&qu=eyJxc2MiOiIyLjU4IiwicXNhIjoiMS41MCIsInFzcCI6IjAuMDAifQ%3D%3D&sr=8-5)
X2. Easy to install. Pain to maintain. I carry several for emergency use only.
Scott
I have used press lock fittings for years in liquid and air applications with very few leaks. Different brands may vary. It it leaks you do not want to reuse, so cut it off and replace with fitting of your choice. The press lock fittings are available at hardware stores, big box stores, amazon. I always bought mine from Kleen-Rite or Grainger. Had equally good results with the plastic ones and brass ones.
Most important thing when using press lock fittings is to be sure you have a clean/square cut on the tubing
The push on fittings are just fine for many applications like OTR trucking where the vehicles have a continuous source of air. A tiny leak here or there isn't going to affect those applications. They're easy to find DOT approved and millions of drivers are using them every day. The key difference is that those rigs aren't trying to hold air for weeks on end while parked. If you're working on any part of your air system that's used for leveling, slide bladders, or is fed by your aux compressor, you're just asking to be leaking hunting again in a couple years by using those push-ons.
I got the old fitting off and got new from Napa. There's has a metal ring instead of original plastic. Do I need to cur the end? I guess I can try without and see if it leaks
You are pushing the tubing through an O ring just make sure there is no sharp edge on the tubing
As Chuck said no sharp ends so filing a bevel on the tubing will make a big difference.