Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 

Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > GENERAL DISCUSSIONS > Tow Vehicles & Towing
Click Here to Login

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-28-2021, 07:03 PM   #1
BritBox
Established Member
 
Join Date: Jul 2021
Location: GLENDALE
Posts: 12
M.O.C. #29286
Too much sway on rough roads

During a recent trip we started to experience way more side to side sway than I would like. On smooth highways the trailer is stable and tracks well. But when the surface is rutted or when going over bridge transitions the amount of left to right sway is noticeable and sometimes concerning. Is it just our poorly maintained highways, I-40 either side of Flagstaff for example, or should I be looking for a mechanical issue? I would be interested to know what other peoples experiences are.

For background, we have a 2013 290RLT pulled by a 2016 Ram 2500 Crew Cab 4x4 diesel using a recent Curt A20 slider/Ram puck system (in the tow position). Tires on the trailer a recent Sailun's of the correct size a load capacity.

The trailer has Mor/Ryde CRE/3000 suspension. I have not had a chance to inspect the bushings but I'm leaning towards installing the Mor/Ryde HD shackle upgrade kit as a first step.

Anyones comments or experience would be appreciated.
 
BritBox is offline   Reply With Quote
Old 07-29-2021, 05:42 AM   #2
DadsHemi
Montana Master
 
DadsHemi's Avatar
 
Join Date: Sep 2017
Location: Florence
Posts: 729
M.O.C. #20472
I would check your suspension and tire pressure.
__________________

2018 Ram 3500 MegaCab 4x4 Aisin, 4:10 Gears
Titan 50 Gal Tank, Air Lift Wireless Bags
2017 3160 RL
DadsHemi is offline   Reply With Quote
Old 07-29-2021, 06:53 AM   #3
rames14
Montana Master
 
rames14's Avatar
 
Join Date: Aug 2004
Location: Livermore
Posts: 4,101
M.O.C. #1920
Definitely look at the suspension. Look at tire spacing side to side. You could have a broken spring, bad shackles or loose U-Bolts. You will find a lot of information on torquing those bolts. After 8 years, depending on mileage, it could be a lot of things. Good luck and let us know if you find something.
__________________
Ron and Terrie Ames with Sirius - MOC #1920
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
rames14 is offline   Reply With Quote
Old 07-29-2021, 07:55 AM   #4
kowbra
Montana Fan
 
Join Date: Jul 2020
Location: Battleford
Posts: 470
M.O.C. #26690
Quote:
Originally Posted by BritBox View Post
During a recent trip we started to experience way more side to side sway than I would like. On smooth highways the trailer is stable and tracks well. But when the surface is rutted or when going over bridge transitions the amount of left to right sway is noticeable and sometimes concerning. Is it just our poorly maintained highways, I-40 either side of Flagstaff for example, or should I be looking for a mechanical issue? I would be interested to know what other peoples experiences are.

For background, we have a 2013 290RLT pulled by a 2016 Ram 2500 Crew Cab 4x4 diesel using a recent Curt A20 slider/Ram puck system (in the tow position). Tires on the trailer a recent Sailun's of the correct size a load capacity.

The trailer has Mor/Ryde CRE/3000 suspension. I have not had a chance to inspect the bushings but I'm leaning towards installing the Mor/Ryde HD shackle upgrade kit as a first step.

Anyones comments or experience would be appreciated.



I had similar issues with our last rig. It was a Jayco Eagle 5th wheel with ~13000 GVWR, and I had a similar 2016 RAM 2500, with factory air suspension.

Here's what you are dealing with - on the RAM 2500's they have either coil springs or an air spring that mounts in that same location as the coils. Have a look under at your rear suspension and the issue starts to take shape - where your coils mount is several inches inboard on each side compared to where leafs are mounted. RAM wants to have the softest 3/4 ton ride out there, which is why the coils. But that inboard mounting area creates a problem for sway. In fact, go grab the box and tug back and forth, then compare the side to side stiffness to a 3500 RAM, or even another brand of 3/4 ton with leafs.

On the hdrams forum there has been discussions of this. I think I recall that some upgraded their sway bars and that helped. Check over there to see what you can find.

I never did fix the issue as I really try to avoid bad roads whenever I can, and I slowed down when I couldn't. When we bought our new Montana with a 16,600 GVWR, I was clearly going to be overweight on my 2500, so I also upgraded to a RAM 3500 with leafs. I don't have a ton of miles yet, but I do not have the issue I did with the last rig.

Hope that helps!

Brad
__________________
2021 Montana 3790RD, Legacy, Super Solar Flex
2020 RAM 3500 Limited, HO
kowbra is offline   Reply With Quote
Old 08-01-2021, 01:32 PM   #5
beeje
Montana Master
 
beeje's Avatar
 
Join Date: Oct 2015
Location: westminster md
Posts: 2,238
M.O.C. #17894
#1 Towing a 14k fifth wheel with nearly any 2500 truck will be over weight.
#2 I think what you are feeling is the squirm from the trucks rear tires.

I have felt that before which is why I will not tow a heavy unit without a dually truck. The difference is a night and day towing experience.
__________________
2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
beeje is offline   Reply With Quote
Old 08-10-2021, 04:57 PM   #6
BritBox
Established Member
 
Join Date: Jul 2021
Location: GLENDALE
Posts: 12
M.O.C. #29286
Thanks for all of the insights. The rear tires on the truck (Michelin)are at almost 50k miles and getting quite close to the wear markers. They will be replaced shortly as a matter of course. Perhaps that will address the issue since sway was not a concern up until this last trip. We will probably stay parked in the forest around Flagstaff (AZ) until mid October so I have plenty of time to tinker with bearings and bushings etc. Again, thanks for your insights.
BritBox is offline   Reply With Quote
Old 08-10-2021, 09:36 PM   #7
Rondo
Site Team
 
Join Date: Aug 2007
Location: Omaha
Posts: 6,445
M.O.C. #7560
Martyn- Speed can cause what you are experiencing also. Not saying you were traveling at high speed but if your tires are getting close to change out on the tow vehicle they will heat up a little faster and cause the flex in the tires. Also, if you are checking the suspension, and you have the wet-bolt system make sure you do no over torque the wet bolts. They are to be torqued at 45-50 anything over that can strip the threads and the nuts can work themselves loose. It is NOT recommended to use any type of lock washer on them either. This came from MorRyde themselves when a friend called them when he lost a bolt and etc of a wet bolt set up. I also had a spring hanger break at the frame and caused some real tire wear on the opposite side tire. Luckily the spring caught on the frame and didn't got through the floor or up into the belly section.
Rondo is offline   Reply With Quote
Reply

Tags
moryde, suspension, sway

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 10:58 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.