how to repair class c swaying of motorhome

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Joined
Nov 4, 2019
Messages
1,026
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
Fulltimer
Yes
Please tell us a little more about the RV and anything that may have already been done to the chassis. Completely eliminating may not be possible but there are things that can improve your handling.
 
Joined
Nov 3, 2019
Messages
646
Location
Florida
RV Year
2018
RV Make
Newmar
RV Model
CanyonStar
RV Length
39' 11"
TOW/TOAD
Demco KarKaddy 460SS and VW Passat
Fulltimer
No
To NWIP's point, some RV sway is "normal". You need to provide vehicle details, make, model, age, miles, condition. The driving conditions under which the vehicle sway is unacceptable. Without these details any recommendation is equivalent to throwing darts at potential mechanical adjustments.
 
Joined
Feb 6, 2021
Messages
2
Please tell us a little more about the RV and anything that may have already been done to the chassis. Completely eliminating may not be possible but there are things that can improve your handling.
Hi, First I'd like to say Thank you for welcoming to this forum. I just purchased a class C from my sister, which she and her husband did not use much. Its a 1994 Fleetwood, with 30,000 miles on it, 22-1/2' in lengh. It is a Ford 350 with the 460 engine and runs great, looks great and everything works as it should, except for the swaying. It is all stock, but it looks like he did replace the all shocks with Monroe Magnum 285. I have been looking at the sumo springs, but they need a gap or space, so i don't think the all the swaying will be eliminated with these. Not sure if I should change rear shocks and go to a heavier duty type..?
Any help with this will be appreciated, Thank You,
 
Joined
Nov 3, 2019
Messages
646
Location
Florida
RV Year
2018
RV Make
Newmar
RV Model
CanyonStar
RV Length
39' 11"
TOW/TOAD
Demco KarKaddy 460SS and VW Passat
Fulltimer
No
In my opinion, the first step is to determine if the suspension requires any repairs.
Worn bushings, rod ends, ball joints, broken parts, etc. If the suspension did not receive routine maintenance any one or more of the suspension parts could be causing issues.
If you have a truck suspension shop that you trust, you might have them take a look. I'd avoid a RV dealership unless they specialize in suspension repair.
Next step, after determining the suspension is working as designed, determine under what conditions you are getting unacceptable handling condition. Then address that condition.

Many people guess and just throw money at these problems, it gets expensive and frustrating. Suspensions look deceptively simple, however, vehicle handling is very complicated.

If you are in Florida, Josam in Orlando or Glenn's Tire in Melbourne might be good choices.
 
Joined
Nov 4, 2019
Messages
1,026
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
Fulltimer
Yes
I agree with @Joe Goodxrvn first make sure all bushings and ball joints are in good order. What part of the country are you located, besides what Joe suggested maybe we can direct you to a reputable service facility.
 
Joined
Jul 29, 2020
Messages
1,060
Location
AZ
RV Year
1983
RV Make
Alpinelite
RV Length
26'
TOW/TOAD
2016 Ram 1500
Fulltimer
Yes
Proper tire inflation.
Like the above posters front suspension could be a big issue. I would take it in for front end alignment. They will check the suspension parts before alignment and you will kill a couple dogs with one stop.
 
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