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Old 09-24-2013, 05:46 AM   #1
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Knight frontend wobble

Every now and then I will experience a mild, controllable wobble in the steering of my knight dft. it does not occurwithvany regularity or pattern. Any ideas as to what imight be going on?
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Old 09-24-2013, 07:22 AM   #2
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Have a good alignment shop check it out you may something getting loose. deSanford
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Old 09-24-2013, 09:45 AM   #3
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I have responded to this type of question before,

We have a 2008 Scepter 42' that we put new 295 tires on last year. Our first trip out with the new rubber I had a intermittant wobble in the front of the coach and steering wheel "shimmy". The wobble would sometimes vibrate the front pasenger seat - alot.

The condition seemed most pronounced on smooth pavement, and less noticeable on rough roads. I took the coach back to the tire shop and said that I must have a bad tire. They drove the coach and guess what - Nothing. So I had the front end balanced, the steering components checked and of course greased, still no resolve. The problem persisted.

So I went back to the tire shop and took the tech for another drive with me, and low and behold the vibration was there!! We pulled the front tires and spun them on a balance machine and the front left tire was out of round - it looked like a egg. It only had 150 miles on it!
New tire - and the wobble, vibration was gone!

I know my explaination is long winded but IMHO unless there was a event that would have damaged your front end, then look at your front tires. The front steer tires work the hardest on these coaches and take alot of abuse.

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Old 09-24-2013, 10:09 AM   #4
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While my coach is a little bigger and a tag axle, one thing I did find was the front tires came with 100 lbs of air in them, when I upped the front air pressure to a 112 lbs I had a very noticeable improvement with the front end handling.

Not sure if this will help your situation, but at least it is easy to try.
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Old 09-24-2013, 01:01 PM   #5
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I would recommend a CHROME MOLY anti sway bar for the front of a RR10R roadmaster chassis with a tag. deSanford
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Old 09-25-2013, 04:13 AM   #6
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Quote:
Originally Posted by Stan&Jacquie View Post
Every now and then I will experience a mild, controllable wobble in the steering of my knight dft. it does not occurwithvany regularity or pattern. Any ideas as to what imight be going on?
Do you have Goodyear tires on the front? If you do that could be your problem. They tend to river (wear funny on the edge) and will not balance. I would consider replacing the front tires with another brand. If they are five years old you need to do this anyway. A blowout on the front of a Class A motorhome is something best to avoid.

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Old 09-25-2013, 06:01 PM   #7
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Bob's right,


I had to replace 3 Goodyear's in 10 months and with only about 5000 miles on them.
Mine did not have a tread wear problem however, 1 was out of round from the factory and the 2 fronts started to bulge on the sidewall near the bead next to the rim.


Needless to say the new 315's I put on are the Michelin Energy breed.


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Old 09-25-2013, 06:12 PM   #8
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If they are five years old you need to do this anyway.
Old wives (Internet) tale. Even the tire manufacturers say it's not required. They do need to be checked though.
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Old 09-26-2013, 09:32 PM   #9
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Old wives (Internet) tale. Even the tire manufacturers say it's not required. They do need to be checked though.
Thank you all for your ideas...I will give he tires a good Look.
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