air dryer leak
There's air blowing straight through the air dryer.
I replaced the purge valve, and went ahead and put a new filter on too. I turned down the governor cut-off to 90 psi and it still blew air through (I turned it back up). System drops and rebuilds on a 33 second interval when it's at its worst. Sometimes it drops and holds at about 100 psi for a little while before rebuilding again. Only the primary air drops; secondary air is stable. I'm afraid my compressor is going to burn up. What could be causing this problem? Is there another valve somewhere between the air compressor and the air-dryer purge valve that might be bad? As a last resort I'll go to a shop, but these days I fancy doing the repairs myself. |
Primary air shouldn't be dropping, after fixing the purge issue, you also have a check valve to replace between the wet tank and the primary.
Something is wrong with the purge valve. Did you get the signal line from the governor properly re-attached to the purge port? Maybe a seal or o-ring out of place or didn't get in there right on the re-install? Check the filter re-install too, something between the two in conflict? Temporarily, to get operational until you get home/get some inexpensive help, you can bypass the air drier by linking the input and output hoses together with some hardware. Drain the wet tank daily while in a bypassed configuration! |
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take a look at this. this may help http://www.bendixvrc.com/itemDisplay...ocumentID=2568
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Ooops. I forgot about this thread. I replaced the air dryer body and the problem was solved. Still not sure what was going on to make air blow straight through like that.
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Its nothing but the odstacles that comes in its path ....not to worry about it... just have a clean look inside the air vent and thats all and yes try this when the dryer is shut off...
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I'm duessing he is reffering to shutting off the motor, hence no air is being supplied to the system but I might be wrong. To replace the filter on my AD-9 was $59.00 and seeing it had a good 800k miles on it, I just spent the $300 and replaced the whole unit. SOmetimes it's easier to replace than rebuild.
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You didn't trade it in for core value? Sale price in the fall up here is anywhere give or take $165 with trade in for a fresh re-build. Lots of fleets swap the whole thing, cheaper on the paid time to the mechanic than a proper pm on the drier.
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