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trentlee19
New Member

4 Posts
Posted - 07/30/2020 :  12:37:11 PM  Show Profile  Visit trentlee19's Homepage  Reply with Quote
I have a 2015 international Cummins with 85000ish miles driver started bus it would not build up air and the air drier is making a thumping noise any help would be appreciated thank you

tigger2
Advanced Member

USA
470 Posts
Posted - 07/31/2020 :  03:19:45 AM  Show Profile  Click to see tigger2's MSN Messenger address  Reply with Quote
What make and model of air drier do you have.
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willism
Advanced Member

United States
250 Posts
Posted - 07/31/2020 :  04:21:13 AM  Show Profile  Visit willism's Homepage  Reply with Quote
Had alot of spitter valves go bad sence this pandemic hit cause there just sitting.
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Thomasbus24
Administrator

USA
4546 Posts
Posted - 07/31/2020 :  04:44:22 AM  Show Profile  Reply with Quote
Can't speak to the ADIP, but I will say that the purge valves of the AD9 driers have been pretty junky the last 8 or so years. We've been swapping out the entire dryer with a reman, rather than changing the purge valve since most often the freaking screws just break off.
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RonF
Top Member

867 Posts
Posted - 07/31/2020 :  06:27:50 AM  Show Profile  Reply with Quote
How often are you servicing the dryer? We do ours every 365 active days, which comes out to be about every 24 months.

Also is the compressor putting out oil into the dryer?
US Army retired CMBT
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Thomasbus24
Administrator

USA
4546 Posts
Posted - 07/31/2020 :  07:08:51 AM  Show Profile  Reply with Quote
I have mine on a 2 year schedule. Seem about half are making it to the service interval before the purge valve turns to crap. We keep up on compressors passing oil, but the blue bird transits feed the air brake system with EGR contaminated air, so they get all nasty pretty fast.
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tigger2
Advanced Member

USA
470 Posts
Posted - 08/03/2020 :  06:30:09 AM  Show Profile  Click to see tigger2's MSN Messenger address  Reply with Quote
We moved most of our compressor intake pipes to the clean end of the charge air cooler pipe
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Bluenozer
Top Member

Canada
644 Posts
Posted - 08/04/2020 :  01:40:24 AM  Show Profile  Reply with Quote
had a thumping noise from an AD9 dryer and he spin filter inside the housing had come loose and it would drum out the beat of the air going into it and plus not build air
OEM trained in wiring and all engine platforms for over 20 years
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Thomasbus24
Administrator

USA
4546 Posts
Posted - 08/04/2020 :  05:48:53 AM  Show Profile  Reply with Quote
quote:
Originally posted by tigger2

We moved most of our compressor intake pipes to the clean end of the charge air cooler pipe


That's terrible of you! Some engineer was so proud of himself/herself for coming up with that, and you ruined it. hahaha
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