Re: Air leaks
Reply #12 –
I did about the same thing as what you guys did during the last couple of weeks without the benefit of a pit. Fortunately I don't have any leaks in the suspension as it will stay inflated for more than a week. I did suspect that the wet tank check valve was leaking, as this tank would have almost no air after 24 hours while the brake tanks would have air. Removed it and found rust inside, cleaned it and removed rust, but it didn't help. I also decided to look at the check valves on the brake tanks although the leak down was 30 lbs in 24 hours, so they were okay. One of those was rusty inside too. These valves come apart rather easily with a vice to hold it and a large wrench. Found someone on ebay selling them for $15 each and bought 3. I also found some other small leaks. One was the regulator on image 5865 above. Tightening the 4 little bolts fixed it. I had to replace the regulator between the brake tanks. It was leaking at the diaphragm and I might have been able to fix that, but a new one at Lowes was only $20. It was no longer adjustable as the adjuster screw and nut was rusted solid. After doing all this lowered the coach and came back 24 hours later and all the air was gone!! Raised the coach and pumped up the tanks, came back 24 hrs later and everything fine only lost 30lbs and wet tank still had good air pressure. Still a puzzle as to why the air was lost with the coach lowered, only one wheel sitting on a stop. This type of work requires safety chocks between the frame members for anyone that might be tempted to do it.
Topic: Air leaks