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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: lostagain on January 12, 2015, 07:42:23 AM

Title: Building air really slowly
Post by: lostagain on January 12, 2015, 07:42:23 AM
Was working fine. On way to town last night, pressure below 90psi and dropping. -18C,0F outside. On fast idle, was rising very slowly. At 125 psi cutout, dryer purges normally. No leaks. All air systems like brakes working as they should. I am thinking bad compressor. Will check intake filter and discharge line after coffee. -24 C this morning!

JC


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Title: Re: Building air really slowly
Post by: Stormcloud on January 12, 2015, 07:46:40 AM
Maybe the air dryer cartridge needs to be replaced?

-24C?  Brrrr....hurry down here!!
Title: Re: Building air really slowly
Post by: luvrbus on January 12, 2015, 07:51:52 AM
I wouldn't work in -11F degree either,probably just a frozen valve 
Title: Re: Building air really slowly
Post by: Ed Hackenbruch on January 12, 2015, 09:46:40 AM
JC, could be the governor on the compressor.....about $20 for a new one.
Title: Re: Building air really slowly
Post by: lostagain on January 12, 2015, 10:15:47 AM
Removed ping tank. Solid ice in it. Compressor is fine. Still slow airing up. Must be ice in line to dryer. That is from shop air 3 days ago while fixing brake chamber. Taking it to neighbour's warm shop to thaw, and visit.


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Title: Re: Building air really slowly
Post by: lvmci on January 12, 2015, 10:40:24 AM
Hi JC, you must have popsicle  toes too! Tom, lvmci...
Title: Re: Building air really slowly
Post by: Stormcloud on January 12, 2015, 11:19:58 AM
I had a similar experience a few years back. The system froze up after the AD-9 dryer while we were travelling through a bad snowstorm. We got thawed out overnite in a large auto-ag shop in Herried, SD , and I added some alcohol to the system while there. If I recall correctly, I added a bit of alcohol to MY system that nite too!  ;)

I replaced the dryer cartridge when we reached our destination, and added an alcohol sniffer kit after the dryer
( kind of like belt AND suspenders ).

No problems whatsoever since then.

Good luck, JC!

Mark

Title: Re: Building air really slowly
Post by: lostagain on January 12, 2015, 07:53:11 PM
All fixed !  Had the bus in warm shop for 3 hours or so. Then disconnected supply line at dryer, and blew shop air from Schrader valve at ping tank. Got 4 or 6 ounces of water and a couple
of ice chunks out of it.

Note to self, and other bus nuts: drain all tanks after putting shop air in bus system, and before taking bus out in cold weather.

Headed out in morning toward Quartzsite.

JC


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Title: Re: Building air really slowly
Post by: Dave5Cs on January 13, 2015, 04:57:20 AM
We always carry a bottle of Heet with us just in case. JC we are leaving in 2 hours see yas there. We are stopping overnight somewhere. Decided to go in on I210, I 10. ;D

Dave and Doreen Walker
Title: Re: Building air really slowly
Post by: Ed Hackenbruch on January 13, 2015, 05:12:10 AM
Hmmmmm.......i hope we don't ice up on our way up to Quartzsite tomorrow! 
Title: Re: Building air really slowly
Post by: TomC on January 13, 2015, 08:33:48 AM
Just isn't worth running in sub freezing weather. Too many things to go wrong.
Title: Re: Building air really slowly
Post by: bobofthenorth on January 13, 2015, 10:06:25 AM
Quote from: TomC on January 13, 2015, 08:33:48 AM
Just isn't worth running in sub freezing weather. Too many things to go wrong.

Sez the guy from SoCal.   ;D

I've seen frost in August and in May.  Refusing to run in sub freezing weather would seriously restrict our mobility.
Title: Re: Building air really slowly
Post by: Dave5Cs on January 13, 2015, 07:13:29 PM
That was a joke. We are in Borin CA at pilot. Left Sac at 9am and made it here at 7pm. 28mph up the tahachapies.blinking all the way.
9 hours plus stopped in Bakersberg for lunch