Vibration above 60

[kaptain kirk]

Soo just bought a 98 Georgie Boy 24 51000 miles and when i get above 60 I start to get a vibration in the rear not the steering wheel.
Is this common due to the duel tires ? Or should I be looking at u-joints etc.
thanks for any input
Kirk

[richard5933]

Not due to the dual rear wheels.

Could be:

Tire(s)
Wheel(s)
Wheel bearing(s)
Drive shaft
U-joints

One very often overlooked item is quite simple to fix. If the drive shaft had been removed in the past, reinstalling it 180 degrees off from how it was originally installed can cause a driveline vibration like you're describing.

[kaptain kirk]

Thanks Richard
I was thinking the same
It looks like im gonna get greasy

[twinboat]

Wheel balance OK ?

Tire belt seperation ?

[richard5933]

Originally Posted by kaptain kirk

Thanks Richard
I was thinking the same
It looks like im gonna get greasy

It's always a good day when you get to go play in the grease for a bit.

If everything else looks good, try and see if you can find any signs that the drive shaft was pulled at some point. With it being from 1998 odds are it's been towed at some point in its life. Wouldn't surprise me if more than one coach was sold due to an "un-repairable" vibration at highway speeds which could have been fixed by rotating the a u-joint.

[Jyrocharlie]

Most 2 or 3 piece drive shafts are marked for the sections to line up with paint or a marker when they are balanced- look for it.

[Bill Gail]

Originally Posted by kaptain kirk

Soo just bought a 98 Georgie Boy 24 51000 miles and when i get above 60 I start to get a vibration in the rear not the steering wheel.
Is this common due to the duel tires ? Or should I be looking at u-joints etc.
thanks for any input
Kirk

98 Georgie Boy . How old are the tires ?

If you don't know the age , check the production date on the sidewall .

We purchased a used MH in great condition with tires that had like new tread on them . Driving it home it had a vibration coming from the rear . 5 miles from the seller's home I had the rear left outside dual blowout . The tires were original !

If the tires are 8 years or older , I would suspect a bad tire , bulging sidewall , belts starting to separate .

If the tires are less than 7 years old and not knowing how far you've driven the MH , if the vehicle has sat for an extended length of time , it can take up to 5 miles for the tires to warm up and the flat spots to round out.

I would limit driving the MH until you've resolved the issue.

[kaptain kirk]

Thanks for all your suggestions much appreciated.
I’ll check all those items and report back
Kaptain

[Flyer15015]

One clue on the drive shaft is that all the grease zerks should be at the same o'clock position.
That is unless some hack has been under there prior to you.