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Old 03-22-2020, 12:03 AM   #1
Mag
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Brand: Thor Motor Coach
Model: Axis 27.7
State: Ontario
Posts: 64
THOR #16132
Heavy clunking

I have a 2019 Axis 27.7 and at times, on uneven roads or sometimes leaving a parking lot back onto the main road there is a loud heavy clunking from under the front of the unit. Have checked things out but nothing seems loose. Thinking possibly when it's parked and the weight is even on both sides it may be hard to tell what it is. I'd like to figure it out. Anyone else have this issue?
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Old 03-22-2020, 12:08 AM   #2
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Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
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THOR #11781
Just a swag, but maybe one of the mudflaps?
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Old 03-22-2020, 12:16 AM   #3
Mag
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Model: Axis 27.7
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THOR #16132
No, much louder than a rubber mudflap. You also can feel it inside when you're driving. More like a shock that's lost the top nut and it freeballing along.
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Old 03-22-2020, 12:22 AM   #4
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Model: 2018 24.1 AXISSIXxSIX
State: Arizona
Posts: 1,428
THOR #13932
Sway bar bushings grabbing.
They're rubber and sometimes grab.
They grease easy enough.
Take the metal caps off, silicone grease the rubber, put the cap back on.
It looks scary but there's no tension on it and it'll sit right where it's at when you pull the cap/keeper.
Should be two bolts, maybe 10mm on each one.

It's an easy try and if I'm wrong, all you have is 10 minutes involved in putting grease where grease should have been all along.
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Old 03-22-2020, 01:00 AM   #5
Mag
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Brand: Thor Motor Coach
Model: Axis 27.7
State: Ontario
Posts: 64
THOR #16132
Recently changed the stock bars for hellwigs, did it before the swap. Btw, like the ride much more with the larger bars.
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Old 03-22-2020, 01:22 AM   #6
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Brand: Thor Motor Coach
Model: S.O.B.
State: California
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THOR #3483
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Originally Posted by Mag View Post
Recently changed the stock bars for hellwigs, did it before the swap. Btw, like the ride much more with the larger bars.
Your story sounds much like ours on our F-53 22k GVW (SOB). We just changed out the front and rear sway bars for the Roadmaster versions which are HUGE in comparison.

So, driving on one of our California highways, double lane in each direction, we hit a "bump". We heard a few thumps from the area of the floor in front of the passenger seat but there were no handling issues. So, every now and then, when making slow turns on uneven areas we would hear the thumps, sounded more metallic rather than "clunks" that come from steering and suspension related parts.

Took the rig to our local service center and finally found that one of the brace welds in the mentioned area had broken from the hard hit. It was rewelded and the thumping noise is now gone. Oh yes, a piece of wheel well splash shield had to be removed to find the broken weld. Just offering as a possibility. Yes, our California roads leave much to be desired too.
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Old 03-22-2020, 11:39 PM   #7
Mag
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Brand: Thor Motor Coach
Model: Axis 27.7
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THOR #16132
Appreciate the replies. I'll have to check this out more closely once the weather allows. Too cool right now to be crawling around under the unit.
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Old 03-23-2020, 12:23 AM   #8
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State: Florida
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THOR #1249
Had a thump on mine also. Found that one of the links for Helwig sway bar was broken. I have had them loosen up also and will get noisy. Locktite those bad boys and or use jam nuts.
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