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Old 03-23-2020, 08:47 PM   #1
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Air release screams :

2019 DS 4018: When hitting auto level the passenger rear just screams and squeals as the air is released and coach is lowered.
It isnít the jack making the noise.
Is the air system Newmar, Freightliner or HWH and any ideas on what would make all the noise while air is released?
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Old 03-23-2020, 09:35 PM   #2
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Look up AZPETE on this forum he has ALL THE ANSWERS about the HwH systems. Send him a private message and ask to post his reply so others will learn
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Old 03-23-2020, 11:18 PM   #3
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When you dump your air, go back to where you hear the air releasing and check the exhaust on the dump valve for a obstruction! Like a bent air line, mud dauber nest in the port, something like that! Rail!
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Old 03-24-2020, 05:39 AM   #4
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This has been a pet peeve of DW since we got it...I spoke to Freightliner in Gafney and they said it is due to the rubber cover where the air is released. It is there to prevent bugs/dauber/etc. from blocking it but can be noisy at times. They said I could spray some lubricating in there and it would help, but I cannot seem to reach it.

Maybe in my next trip to Freightliner I can have them do it.

Interested in what others think.
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Old 03-24-2020, 12:54 PM   #5
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This happened on our old rig after Freightliner replaced our dump valve. They had a "silencer" that they then installed which quieted down the sound to what I had previously.
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Old 03-24-2020, 03:32 PM   #6
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Here's the contact info for azpete (Paul Maddox)
Phone: 602-549-3638
Email: pfmaddox@att.net

Paul works for HWH and is always ready to help us out. He isn't soliciting work, he just helps us out.

He even offered to stop by on his way home form FL to help me with a problem in my jacks - got it fixed thanks to him so he didn't have to come by.

Stay safe - Richard
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