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Old 07-26-2016, 09:45 AM   #1
2011 Berkshire 390BH
 
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Clunking noise after axle/tire upgrade

Ever since our 2011 390BH had the brakes/bags/tires upgraded in early May of this year, we now have clunking noises as we walk around the RV while camped (jacks down, slides out, etc.) We've been to numerous campgrounds and the clunking noise always occurs. It's very much like a house that has settled and the floor joists creak as weight moves over the floor. However, these aren't creaks, they are clunks.

I'm wondering if anyone else has had this issue after the upgrade and what they did to get the clunking to stop.

Thanks!
Jeremy
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Old 07-26-2016, 10:03 AM   #2
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Could be couple things. A slow leak in an air bag or air line. Or possibly a jack is leaking off slowly.

Russell
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Old 07-26-2016, 10:22 AM   #3
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Hello Jeremy. We had our upgrade performed in February and have not had any issues at all. I would bet that one or more of your jacks is leaking by a bit (the airbags get vented when you level the coach). I have heard of others that have had similar issues with their jacks (not just motorhomes but others with hydraulic jacks as well) when the seals or valves get a bit of dirt or debris in them causing a slow leak. If you are not seeing any fluid leakage anywhere onto the ground or other places, that is what I would bet you are witnessing. This can sometimes be more noticeable with temperature changes causing slight fluid viscosity changes. Might be a good idea to take it somewhere and have the leveling system checked out. -Glenn
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Old 07-26-2016, 10:26 AM   #4
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I mentioned the airbag in case he was leveling manual. And his bags would be inflated ?

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Old 07-26-2016, 10:47 AM   #5
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Quote:
Originally Posted by CAT-RN View Post
I mentioned the airbag in case he was leveling manual. And his bags would be inflated ?

Russell
Good point Russell. -Glenn
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Old 07-26-2016, 12:33 PM   #6
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I have always had a clunk sound from the frame I believe. It is better when parked on rubber mats but it still is there. I will hear it sometimes when laying in bed so it's not just moving around in the Moho that causes it. I believe it's a combination of the jacks settling and the frame popping. The rubber mats help a great deal by isolating the jack pads from the concern
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Old 07-26-2016, 12:38 PM   #7
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Toppind up my hydraulic pump with fluid seem to stop mine. You must do this with the jacks up and the slides in.
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Old 07-26-2016, 01:21 PM   #8
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Dan I topped mine off and added MM oil. And it still does it. I had the manufacture look at it last year at the rally. He added the MM oil and said my sticker showing the full line was wrong. It should be almost full when everything is stowed.
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Old 07-26-2016, 01:42 PM   #9
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Yea Phil, I did not go by that paper sticker of the full line as it did not look right to me
I filled to the indented line in the plastic tank.
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Old 07-26-2016, 05:44 PM   #10
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Use some Marvel mystery oil in the hydraulic system. It stopped our creaking. We had it prior to the upgrade. The jacks were leaking down quite common.
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