Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Roadmaster Motorhome Chassis Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 10-21-2014, 02:29 PM   #1
Member
 
Join Date: Mar 2004
Posts: 30
Severe intermittent 03 Scepter rear shaking

Hope someone can help me diagnose this one. I have a 2003 38' Scepter on the RR8S chassis. 55k miles. Original shocks (new Bilsteins ordered). Just returned from a 5000 mile trip. 6 times during the trip there was a violent shaking in the rear, felt like side-to-side, which occurred at fairly low speeds (once at 5-10 mph, other times up to 45 mph). This shaking was severe enough that I stopped each time, IMMEDIATELY. Feels like the rear end is loose and shaking BAD. Each time I checked under the coach, examined all suspension parts I can see, and no problem evident. Once the coach has been stopped, then I could resume travel and everything felt normal - sometimes for over 2000 miles til it happened again. It DID seem to occur after going over some type of raised bump in the road - once after I went over a curb, once after going over some 1" high round lane markers. Bump did not have to be on one side - either could cause the shaking. But it's inconsistent - plenty of times in all that travel I went over bumps with no reaction.

Today I had a frame and alignment shop check it and they could not find anything wrong. Ride height appears fine but I will check that tomorrow.

I had thought maybe suspension bushings. They all LOOK fine from the underneath.

Anyone out there had this problem or suggestions how to figure it out?
Twoflyrodders is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 10-21-2014, 02:42 PM   #2
Senior Member
 
DieselTech39's Avatar
 
Solo Rvers Club
Join Date: Jul 2014
Location: Ham Lake, MN
Posts: 3,038
Two things come to mind for me:
1. Have you changed the rear axle lube lately? Might want to do that and have an oil analysis done. Could be a issue with the carrier bearings, pinion bearings, spider gears, or ring and pinion.
2. Have you checked the rear wheel bearings? Could be starting to fail or out of adjustment.
Best of luck on a solution.
__________________
Have a wonderful day!
Ken (RVM 87)
FT DP Wanna B The journey is the destination!
Retired & perfecting procrastination!
DieselTech39 is offline   Reply With Quote
Old 10-21-2014, 02:50 PM   #3
Senior Member
 
Steve Ownby's Avatar
 
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,587
Quote:
Originally Posted by Twoflyrodders View Post
Hope someone can help me diagnose this one. I have a 2003 38' Scepter on the RR8S chassis. 55k miles. Original shocks (new Bilsteins ordered). Just returned from a 5000 mile trip. 6 times during the trip there was a violent shaking in the rear, felt like side-to-side, which occurred at fairly low speeds (once at 5-10 mph, other times up to 45 mph). This shaking was severe enough that I stopped each time, IMMEDIATELY. Feels like the rear end is loose and shaking BAD. Each time I checked under the coach, examined all suspension parts I can see, and no problem evident. Once the coach has been stopped, then I could resume travel and everything felt normal - sometimes for over 2000 miles til it happened again. It DID seem to occur after going over some type of raised bump in the road - once after I went over a curb, once after going over some 1" high round lane markers. Bump did not have to be on one side - either could cause the shaking. But it's inconsistent - plenty of times in all that travel I went over bumps with no reaction.

Today I had a frame and alignment shop check it and they could not find anything wrong. Ride height appears fine but I will check that tomorrow.

I had thought maybe suspension bushings. They all LOOK fine from the underneath.

Anyone out there had this problem or suggestions how to figure it out?

Probably a long shot but check out the engine/frame mounts.


Steve Ownby
Full time since '07
__________________
Steve Ownby
Full time since 2007
2003 Monaco Signature
Steve Ownby is offline   Reply With Quote
Old 10-22-2014, 01:44 PM   #4
Member
 
Join Date: Mar 2004
Posts: 30
Ken -Good thought. It had occurred to me that it acts like it would IF a rear wheel bearing was a little loose and perhaps could make it vibrate wildly. I don't see how the other bearings could cause it, but if the other checks don't find it I will have the whole rear end checked. Thanks

Steve - I did have the motor mounts checked and they are fine. Body motion alone from loose mounts couldn't cause this rapid and violent a shaking. Thanks, Bruce
Twoflyrodders is offline   Reply With Quote
Old 10-22-2014, 03:16 PM   #5
Senior Member
 
Steve Ownby's Avatar
 
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,587
I hope Vanwill sees this thread. He knows more about Roadmaster suspensions than anyone I know.


Steve Ownby
Full time since '07
__________________
Steve Ownby
Full time since 2007
2003 Monaco Signature
Steve Ownby is offline   Reply With Quote
Old 06-02-2016, 11:22 AM   #6
Junior Member
 
prwa330's Avatar
 
Monaco Owners Club
Join Date: Sep 2013
Posts: 17
I have been having the same symptoms on my 07 Cayman 36PDQ RR4R. Happened 3 times last summer. Had front airbags and shocks replaced. Yesterday it happened twice both time after major pavement bumps. Feels like a side to side wobble like the wheels are not vertical on the axle.

Did you ever discover the cause/fix???

Any info would be appreciated!

Patrick W
__________________
Patrick and Janice
2007 Monaco Cayman XL 36PDQ+'14 Jeep Cherokee toad
prwa330 is offline   Reply With Quote
Old 06-02-2016, 05:00 PM   #7
Senior Member
 
tankcj's Avatar
 
Newmar Owners Club
Spartan Chassis
Join Date: Oct 2010
Location: Lake Havasu City, AZ
Posts: 1,711
Quote:
Originally Posted by prwa330 View Post
I have been having the same symptoms on my 07 Cayman 36PDQ RR4R. Happened 3 times last summer. Had front airbags and shocks replaced. Yesterday it happened twice both time after major pavement bumps. Feels like a side to side wobble like the wheels are not vertical on the axle.

Did you ever discover the cause/fix???

Any info would be appreciated!

Patrick W
Patrick,

Does this happen when towing your Cherokee? If so, it may be that your Jeep has death wobble and is causing the shaking. There have been several threads on this.

http://www.irv2.com/forums/f85/sever...ee-240620.html

http://www.irv2.com/forums/f85/does-...ee-247984.html

http://www.irv2.com/forums/f59/death-wobble-258892.html
__________________
2019 Newmar Dutch Star 4328 K2
2017 Grand Cherokee Summit 5.7
2008 Beaver Contessa 40' Pacifica 425 Cat
tankcj is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ford E450 Class C Rear Lift? Lovin2Camp Ford Motorhome Chassis Forum 5 05-16-2014 09:30 AM
WELDEX Rear monitoring adonh RV Systems & Appliances 6 05-15-2014 04:31 PM
Rear leveler jacks on Ford F53 chassis RonVBT Class A Motorhome Discussions 4 03-21-2014 08:40 AM
Rear A/C Issue Koop Alpine Coach Owner's Forum 10 02-21-2014 07:28 PM
Power to rear camera - upgraded system 04Beast Newmar Owner's Forum 10 01-28-2014 05:07 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 05:28 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.