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Old 01-26-2015, 06:51 AM   #1
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Steering wheel shakes at cruise spped.

I have a 2003 Forest River Georgetown 325 motor home with a Triton v10. Saturday while traveling home I filled up gas and got back on the road. About 5 miles on the road the motor home started acting funny. Driving 65mph cruise control on the following happen. going down hill or up hill (tranny shifting to lower gear)the motor home seemed fine. At cruise speed the steering wheel started shaking.Stopped later and put in 28 gals. still same thing Anyone have this problem or ideas?
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Old 01-26-2015, 08:35 AM   #2
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I had a similar thing happen with my Berkshire. Violent shake of the steering wheel while at speed on my last trip last year. When O queried on the forum got no replies. I did find my front tires were low by 10 PSI due to cold. Added air and things were better but not right. I was told when I got coach inspected that I had a broken Belt in the front tire. I don't know how someone could tell as it looks the same as the others to me. As my tires are due for change I plan to get new tires in the spring and have alignment on coach checked.

I have read on the forum that a lot of people are aligning their Georgetowns.
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Old 01-26-2015, 09:11 AM   #3
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My tires are at most 3 yrs. I had traveled about 250 miles that day and everything seemed fine til I left the gas station. Last alignment was 4000 mile ago. Not sure just trying to get some input. Thanks for the help.
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Old 01-26-2015, 09:23 AM   #4
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Shaking of the wheel could be as simple as you lost a wheel balancing weight and need to rebalance tires or you have a belt shift in tire ( which usually you feel more at low speed). I don't think alignment will give you a steering wheel shake at cruising speed only (but I may be wrong).Good luck !
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Old 01-26-2015, 09:27 AM   #5
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Being a tire guy, the first thing we look at in a high speed vibration complaint is the balance.....and if the customer has put fix-a-flat products in the tire (which will cause out of balance problems at high speed).

We also see if there is mud caked on the inside of the wheel (very common down here in gumbo mud country) that also adds a lot of weight to cause the tires/wheels to be out of balance. You wouldn't believe how many we get that just washing the mud off the wheels fixes the problem. It's very common for people who travel/live on dirt roads a lot, as well as rural route mail carriers.

If the balance is good, and the tire is not separated.....then you can go to mechanical issues. Driveshaft balance, broke/loose motor mounts, transmission, etc.
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Old 01-26-2015, 01:17 PM   #6
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Don't forget to look at the steering linkage. A idler arm or inner connecting rod could be a issue. Easy to see just have someone rock the steering wheel back and forth (engine off and while in park) , just go slow with the inspection. If something is loose you should see movement that isn't normal.
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Old 01-26-2015, 01:26 PM   #7
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Also may be a tie rod end noticeable from underneath when doing the steering wheel test, wheel bearings can be checked with the tire off the ground check for too and bottom movement in the tire it will feel as if the lug nuts are a little loose.
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Old 01-26-2015, 01:26 PM   #8
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check for broken or welted belt on tire, balance weight missing and such. it doesn't matter the age of the tire for a belt to shift or break. I had 4 brand new firestone tires on a car that had bad belts and I even had a warranty from firestone and they would not honor the warranty. so I have never bought their products after that. or it even can be a shock going bad
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Old 01-26-2015, 02:05 PM   #9
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Come to think about it could be mud as we were tuck the night before. Will check all those things mentioned. Thanks to all of you for your help.
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Old 01-26-2015, 02:14 PM   #10
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Quote:
Originally Posted by THELMALOUIE View Post
Come to think about it could be mud as we were tuck the night before. Will check all those things mentioned. Thanks to all of you for your help.
Yes, if you were stuck the night before, there is a high possibility you may have some chunks or more of mud stuck to the inside/outside of the wheels.

You might can go to a car wash (or if you have access to a pressure washer) and see if you can wash a bunch of the dirt/mud out of the wheels. If you have hub/center caps on your coach, it can be more problematic to be able to get to, in order to wash everything out.

Hope it's something that simple.
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