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Leak chasing
I’ve got two leaks that I need help as I don’t know how to take these fittings apart .. The first one is behind the dash and seems to be some sort of push on. I’ve tried half a dozen ways and at least as many prayers to try to get this apart to figure out why its leaking – the leak is around green ring at the rear gauge – if I push it in and hold it, it stops hissing. But nothing seems to get it to come off the back of the guage so I can look at it.
The second may be just a matter of lots of PB blaster and patience .. Leak is at the hose, it looks like its just a compression fitting but it hasn’t broken loose with some serious weight on the wrench .. thought I’d double check just in case there was some magic I didn’t know and before I gorrillaed it even more
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21 Replies
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Notice the brass fitting has two stages: the smaller(where your red circle is) pushes in. Keep it in and the air line will release and pull out. Your repair may be as simple as cutting off 1/4 inch of hose /square and pushing back in. the inside fitting will automatic pop back out… May have to twist the air line a little to help–most of time not.
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If what Robert suggests doesn’t do it, go to DOT compression fittings and your problem will be solved. You can also get DOT push in fittings, I’ve had good luck with those in place of the old brass that you have.
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on compression! was trying to keep it simple in beginning. The shock of fitting purchase now$$..Bob
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No doubt compression fittings are very expensive, but their cost is dirt cheap compared to paying someone to chase and fix air leaks in push in fittings.
Some push in fittings are just difficult if not possible to get to release the air line. On more than one I have given up and cut the tube as close to the fitting as possible, and then replaced the fitting with compression.
Having said that however, some fitting locations will only accept push in 90 degree fittings that swivel unless you are prepared to get creative in changing more than just a fitting. In that case get a new DOT push in fitting and expect that in time you will be replacing it again.
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I have cut push in fittings off too , replaced with comp fittings . I did my hole coach with comp fittings even the three dash gauges, not one push in fitting left. It’s worth every penny to do it and no leaks , what’s a few dollars spent on comp fittings compared to the cost of the bus peanuts. I aired my bus all the way up as high as it would go and put jack stands under it , it has been sitting for about two weeks and you can still move jack stands they where about 1/4 inch from touching body support points …
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I have found that, if you take an open end wrench just big enough to slide over the hose, then slide the wrench along the hose toward the lock ring on the push lock fitting, and apply more pressure with your hand on the wrench for more leverage, then at the same time, with your other hand, push the hose IN hard to release the lock, and then pull out on the hose firmly, while still holding the wrench against the fitting, most of them will release.
I have had to cut some that were really hard to get to as well.
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Ok I got the Elbow out .. but the leak appears to actually be at the guage side itself (see pic) The other guages release fine but this one is really stubborn and won’t let go of the hose at all. It won’t even turn when grabbed with pliers ..
I’ve shot its outside with PB to see if it will somehow sink in and break something loose .. otherwise I suppose I’m going to have to take the dash out to get at the guage better unless someone has a better suggestion. 🙁
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I think that fitting screws on back of gauge have you tried to unscrew that fitting from back of gauge I did mine they had push in fittings at back of gauge , took fitting off gauge and replaced with comp fitting….Looks like you could get wrench on it or or deep socket !!!!!!
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yeah I thought about unscrewing that right off the back of the guage .. worried about pulling the guage apart inside the panel though as I can’t see how to hold it
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There should be a nut there to hold while you turn fitting , I cut a wrench down in length so it would fit go slow I think it will work if you don’t hold nut on gauge it will turn gauge !!!!!! I left gauge in dash just unscrewed dash for more room pulled it out just a little bit be careful not to move to far out lots of wires behind there!!!!! Not sure how your dash is so not sure if you can unscrew it or not but just look at it you may be able to get to it with out unscrewing dash you got the elbow out so I think you can do it!!!
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Just to be sure, since 2000 was a pivotal year, make certain you two guys are talking about the same dash and gauges.
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Your right Jon that’s why I said not sure of how his dash is mounted from the photo looks like that fitting unscrews don’t you think? It looks like a nut on the fitting in pic!!!!!!
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The fitting should unscrew for sure. But not sure if it is a separate gauge or one that is an integral part of the dash display.
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Sorry for giving advise about it
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Your advice is good. I didn’t know what dash the 2000 Angola has, whether it is the new one, or the one like yours because I think they have different types of gauges. Some converters called their model year 2000 even though it was the first year of the XLII, but most called the first model year of the XLII (which Prevost shows as a 2000) a 2001.
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