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Topic: Pulling Wheel Well Fenders for Air Bag Installation (Read 2367 times) previous topic - next topic

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #21 –
Personally, I don't like using Push-to-Connect (or quick connect) fittings.  The seal relies on a single o-ring that moves around a little when the tube moves relative to the fitting.  It's also quasi-exposed to the environment so o-ring cracking is a possibility long term.  Another problem is the o-ring seals on the outside of the tube so that OD needs to be scratch free - no control over that when working on older coach.  The swivel is nice for install too but it is also another leak path.  The OEMs love the Push-to-Connect for obvious reasons and they will always be using new tubing.

I like using Parker "NTA" fittings to connect to nylon brake tubing.  They are DOT rated to seal to DOT brake tubing.

Here's an old thread that discusses fittings: Travel Mode Air Problem
Park catalog link doesn't work anymore in the above older thread but here's a new one: Parker Air Brake Catalog

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #22 –
I have had the push-on connectors leak on my crane. It is no problem if it is easy to access. I wouldn't use them on the 4 air bags that are very hard to reach the fitting. On the other 4 if they started leaking they could be replaced easily. I do just replace them on the crane when they start leaking at the o-ring as it is very easy access. I even use the push on splices when a leak develops in the middle of a line. When they do fail it is a very small leak at the o-ring.

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #23 –
Quote from: Travelin' Man –
I'm getting ready to replace my air bags and found these;
1/4" MNPT 3/8" OD Push to Connect Swivel Elbow - Push to Connect - Hoses |...

Milton is a recognized brand and they seem to be cheap enough here;
http://www.autopartsandstuff.com/milton-2202-9-swvl-ltube38od-14mnpt.aspx


The swivel feature may just be the ticket for easy orientation.

Those come with after market air bags.Have installed several sets. They usually leak. We use those on the race car for our throttle stops,and air shifter's they usually leak. I personally wouldn't use them.

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #24 –
Chris
What connection would you use / recommend

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #25 –
Quote from: Jimmyjnr –
Chris
What connection would you use / recommend
If you remove the 90 before you remove the bag, it's easy or I should say, ours were. Otherwise you need to put it in a big vise or something like that. You just need a wrench that gives a bit of leverage without damaging the fine threads.

Pierce

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #26 –
I agree with Pierce, at least break the fitting loose before you remove the bag.
About the same as breaking the fittings loose on the air dryer before you remove it!

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #27 –
So reusing existing fitting?
Thought new would reduce risk of leak , damaged threads etc

Re: Pulling Wheel Well Fenders for Air Bag Installation

Reply #28 –
Quote from: Jimmyjnr –
So reusing existing fitting?
Thought new would reduce risk of leak , damaged threads etc


If you are careful, not much chance of damaging the fitting or threads. It's easy! Used fitting is as good as a new one. I like a teflon compound as opposed to teflon tape. Just a little on the fitting threads starting a thread or so up from the end.

Pierce