bigredhdt Posted August 3, 2016 Report Share Posted August 3, 2016 Due to a faulty leveling valve my rear air bags (not singled) went to full height. Had to run dumped for a while due to excessive driveline vibration or should I say growling. Now I have a very slow leak I. The rear suspension, about 1" per day of suspension drop while sitting. I shaped all connections and the bags as well as I could but don't find leak. Should I worry about this? Unloaded my bags are at 12 psi based on what the truck says. My trailer pin weight might be 3000lbs. Link to comment Share on other sites More sharing options...
Darryl&Rita Posted August 3, 2016 Report Share Posted August 3, 2016 A leak is a leak. How much it bothers you is up to you. I hate leaks, but deal with compressed air enough to accept some. Once the OCD kicks in, all bets are off. If it's overtime, you would'nt believe the time I can spend with a soap bottle in my hand. Link to comment Share on other sites More sharing options...
SuiteSuccess Posted August 4, 2016 Report Share Posted August 4, 2016 "Once the OCD kicks in, all bets are off. If it's overtime, you would'nt believe the time I can spend with a soap bottle in my hand. :D" One of my new favorite quotes. Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted August 4, 2016 Report Share Posted August 4, 2016 The air bags are fairly easy to replace. For $450 or so you should be able to source a set (2 pair) and replace them. One issue to look for before buying new bags though- If the leveling valve has been replaced, did the hose ends get trimmed before being connected to the new valve? The push lock fittings will wear a groove in the tubing. The tubing didn't leak in the old valve fittings because everything was new together and wore together. Remove each line and trim 1/4 to 1/2" off and reinsert into the valve. This fixes most airline leaks. Link to comment Share on other sites More sharing options...
budeneighe Posted August 4, 2016 Report Share Posted August 4, 2016 Have you looked at cab leveling valve. Typically, these start to leak around the shaft. Also, air ride seats can be a source of leaks. When there seems to be nothing leaking in the brake and leveling system, look inside. Have even had a leak behind the dash in the air lines to control and sensors. Link to comment Share on other sites More sharing options...
bigredhdt Posted August 5, 2016 Author Report Share Posted August 5, 2016 Maybe this is wrong, but the leak has to be post leveling valve as it is cut off from the truck when level. I did trim the ends of all the lines. Some of the lines I was unable to remove from the old valve so I had to cut them. Link to comment Share on other sites More sharing options...
phoenix2013 Posted August 6, 2016 Report Share Posted August 6, 2016 OCD is a terrible symptom, but with old age wisdom, less energy and finally comprehending what is truly important in one's waning years of existence, I have it under control. My (old) truck leaks, they all leak, if mine leaked 1 inch per day, I would sing Halleluyah The only 100% cure with old lines and push-ons is to replace the lines and push-ons, a sure fire treatment for OCD too. The next best option is to replace the push-ons with DOT brass fittings with ferrules, you can crank them on hard enough to stop any leak regardless how old, stiff and dirty the line is. Link to comment Share on other sites More sharing options...
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