dandick66 Posted May 4 Share Posted May 4 I have a leak(s) in the air system and am wondering if anyone has an idea as to where I should start. I have sprayed soapy water on the front tank, treadle valve and all hoses and connections that I can reach. I need to get the coach up on blocks to access the rear tank and surrounding area. Listed below are the results of my various tests. Note: I started a thread a couple of weeks ago regarding oil in the air tanks. I changed out the World American filter to a WABCO oil coalescing filter and it looks like that fixed the problem . I will wait awhile before I go back to that thread and report success (or whether I have to rebuild my compressor ). Parking brake pops at 30 PSI 30 PSI - 125 PSI 1:55 Compressor cut out 125 PSI Compressor cut in 104 PSI Engine off, parking brake off, service brakes on, drops from 110 PSI to 70 PSI front, 50 PSI rear in 2 minutes Engine off, parking brake off, starting pressure 110 PSI, at 1:50 100 PSI, at 4:00 90 PSI, at 6:30 80 PSI Engine running, parking brake off, service brakes on, starting pressure 112 PSI, drops to 103 PSI in 20 seconds, compressor cuts in Engine running, parking brake on, starting pressure 113, after 2 minutes no change (still 113) Engine running, parking brake off, service brakes off, starting pressure 113 PSI, drops to 107 in 1 minute, at 1:40 drops to 104 and compress cuts in Open bottom valve near generator, black hose to dry side of front tank, both tanks drain to 0 Open top valve near generator, red hose to wet side of front tank, both tanks drop to 0. Open rear tank drain, front tank holds starting pressure (120 PSI), rear tank drops to 0 Based on these tests, I have no way of draining only the front tank. Link to comment Share on other sites More sharing options...
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