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Old 09-14-2021, 04:49 PM   #1
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Coach rocks in hard turns

After I make a hard turn the coach starts rocking violently and won't stop till you pull over and change the valid from travel mode to manual then back again. Has anyone had this happen. If so what is the fix.

I sure hope we get the end of the repairs on this some day. I still like it anyway.
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Old 09-14-2021, 05:57 PM   #2
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Can't help with your problem but I'm sure someone will soon. You should give more details about the coach, year, model and whatever else you think may help figure out the issue.
98 Monaco Windsor
2015 Rubicon Toad
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Old 09-14-2021, 10:05 PM   #3
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I would put shocks at the top of my list.
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
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Old 09-14-2021, 10:31 PM   #4
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What you describe , with being able to stop the issue by switching suspension functions ; sounds like the rear end ride height is sagging in corners to the point where the drive shaft U joints bind and cause the rear end to jump , by raising the rear above the bind angle you smooth things out.

Look into ride height measurements and adjustment for your chassis , I'll bet the rear is borderline low and cornering throws it over the border.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
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Old 09-14-2021, 11:10 PM   #5
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Guessing this is a air bag suspension RV?
If so, it may have bad check valves.
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Old 09-15-2021, 12:24 PM   #6
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Rogpog has a 2009 Monaco Dynasty with the Valid air leveling system. Roadmaster chassis with 10 air bags and 10 shocks.
If you can find the opportunity to take it to Source Engineering in Oregon they can help. The guys at Source worked at the original Monaco factory back in the day and specialize in chassis and suspension.

I'd start by calling them. They may be able to guide you through checking a few things.
Source Engineering Inc | Custom RV Chassis | Eugene, OR
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25375 Loten Way
Veneta, OR 97487
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
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Old 09-16-2021, 10:56 AM   #7
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Sorry everybody, My coach is a Monaco Dynasty 45 feet. And has 10 air bags
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