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Old 06-28-2013, 06:52 AM   #1
Tiffin Owners Club
Join Date: Dec 2012
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Dash air problems

Trying to charge dash air on my motor home, the system will not take coolant, I can hear the clutch on the compressor clicking in and out, I think the clutch maybe bad due clicking in and out so often, any thoughts, ideas


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Old 06-28-2013, 06:56 AM   #2
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You need to jumper the low pressure switch which right next to where the charge port is that you are using. It is cycling because not enough pressure. Just jump the switch and charge till full.

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Old 06-28-2013, 07:34 AM   #3
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The clutch clicking is normal when you are low on coolant.
Tony & Ruth........... FMCA#F416727
Newmar Dutch Star 4320, Spartan MM Chassis, Cat C9, Jeep Grand Cherokee,with Hemi, hooked up with a Blue Ox Aventa LX, and Brake Buddy.
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Old 06-28-2013, 08:28 AM   #4
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Originally Posted by Ranger Smith View Post
You need to jumper the low pressure switch which right next to where the charge port is that you are using. It is cycling because not enough pressure. Just jump the switch and charge till full.
X2- That's how to do it..
2003 Newmar Kountry Star 3905, Freightliner XC chassis with CAT 330. Winnie the black lab, pretty Airbus captain wife, retired airline pilot with 11 grandkids. UH-1 pilot (Huey) U.S. Army 1967-1983. RVN 68-69. Northern Idaho my summer home.
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Old 06-28-2013, 11:47 PM   #5
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Did you have a leak and did you pull a vacuum or are you just trying to add more R134?

If air has entered the system then no way is it going to work - you need to pull a vacuum first and then introduce the R134 after whatever leak you had has been fixed.

It can be done DIY but best left to the pros.
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