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Mackman
Joined: 14 Sep 2005
Posts: 2439
Location: Concordville PA
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| Posted: Mon Dec 25, 2006 11:55 am Post subject: |
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| I will look wed. to see what dryer it is. |
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RockyMtnProDriver
Joined: 12 Jun 2005
Posts: 1558
Location: Cranbrook BC
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| Posted: Tue Dec 26, 2006 8:39 pm Post subject: Re: 140 PSI in the air tanks |
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Mackman wrote: I have been driving a 2001 mack CL 350. It builds a 140psi and the air dryer goes off once every 5-7 secs. I told the mech he said he would look at it and that was 2 weeks ago. Is this a major problem safety wise. :?: :?:
Ya, that is getting kind of high. It should really not be much higher than 125 psi, and a maximum of 135 psi.
You are getting close to the Safety Valve maximum limit of 150 psi before it starts blowing.
What you probably need is a new governor. Don't try and adjust it, it is cheaper to replace than fix, and many are not adjustable at all.
Also, that it is cycling every 5 to 7 seconds tells me that the Governor is not working on the bottom either.
A Governor should be set about 125 maximum (it can be anywhere from 105 to 135), then shut down the air flow to the tanks and then start to send air again about 20 below maximum, or ab out 105 (if you have a 125 system. |
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JoeyB
Joined: 03 Dec 2006
Posts: 85
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| Posted: Tue Dec 26, 2006 8:50 pm Post subject: |
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| We should have an answer to this by now. They had all of Christmas day to work on it... |
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