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Author Topic: air pressure blow off valve noise/sound has changed  (Read 617 times)
bansil
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« on: November 28, 2012, 04:40:41 PM »

I noticed this past weekend that instead of a nice "crisp" pop once pressure was reached,I get a "slower" bleed off sound.
I crawled under bus and noticed the valve is kind of grimy,can I just take it apart and clean it or ??
Pressures looked the same as normal on the gage,it just sounds "sick"
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Doug
Mnt City TN
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Utahclaimjumper
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« Reply #1 on: November 28, 2012, 04:57:40 PM »

 If your talking about an "air dryer", they need service on a regular basis and it takes a rebuild "kit".>>>Dan
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Utahclaimjumper 
 EX 4106 (presently SOB)
Cedar City, Ut.
 72 VW Baja towed
Dave5Cs
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1979 MCI MC5Cs 6V-71 HT-740 Allison, Roseville, CA




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« Reply #2 on: November 28, 2012, 09:10:10 PM »

Drop the bottom out and take the purge valve apart and clean it. Replace the dessicant cartridge NAPA 68.00 and it has a new check valve in it so don't order an extra one.

Dave5Cs
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bansil
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« Reply #3 on: November 29, 2012, 02:03:43 AM »

Thank you
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Doug
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« Reply #4 on: November 29, 2012, 11:38:36 AM »

Did it make its sound/duration change during hot, dry weather, or has it started doing it now that things are very cold and wet?  Yep...moisture.  My old Crown had an separate air dryer cartridge filture thing that was supposed to changed out.  HB of CJ (old coot)
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