Update On Air System Issues
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09-28-2008, 09:56
Post: #1
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Update On Air System Issues
Progress since last post regarding air system issues.
Air pressure was bleeding off at the rate of 60 pounds in 5 minutes (120 to 60). When I bought the coach 3-1/2 years ago it was leaking 60 pounds in 20 minutes. I monitor this by the holding tank dump station pressure gauge. Also, the drive/tag suspension would go down in 24 hours. My son has great hearing. He found a couple more air leaks, namely two of the three Pilot Control Valves on the drive and tag axles. The curb side drive and the tag were leaking. All three valves were replaced. Several more leaks were found and resolved by tightening up line fittings. The leaking was now 40 pounds in 17 minutes, much better, but not to the point I was happy. And the drive/tag would still go down in 24 hours. Next was to determine which part of the system is leaking. Blocking off the dump valves and airing up the suspension, the suspension would still go down in 24 hours. So it's either the air springs or the hard lines. The air springs were new three years ago. Decided to replace the hard lines to the bags with plastic lines. The result is the suspension stands for days, and the air leak(s) is now at 50 pounds in 5 hours. I'll stop working this project for now. May need to revisit over time as I'm sure more hard lines will rub together creating more leaks. A pit sure would be nice.. .I would change out the hard lines for the plastic. |
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Update On Air System Issues - Curt Sprenger - 09-28-2008 09:56
Update On Air System Issues - Richard Gideon - 09-28-2008, 10:45
Update On Air System Issues - Curt Sprenger - 09-28-2008, 15:14
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