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Old 11-11-2012, 02:12 PM   #15
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Yokes ligned up ??? How should they be ?? I have a 3 pc drive shaft, and also have a vibration, (speed sensetive) even after having a good shop rebuild/straighten/balance all drive shafts along with carrier bearings.. Been a while, but I thought they had a master spline to align things. This is also approx the same speed as the OP.. (P32 chassis here)
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Old 11-11-2012, 03:17 PM   #16
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monkey i have a 3 pcs driveshaft or so im told. i have not been underneath it. this motorhome has only 15k miles on in and was kept in heated storage. the guy who owned it was one that does every thing himself, and it shows. i guess i will go after the driveshaft balance. what is weid at 60 mph its smooth as can be. i wounder if i screw it up if i drive to fl. this winter.
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Old 11-11-2012, 03:39 PM   #17
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Would not argue about the drive shaft possibilities, however we had a similar vibration that ultimately ruined a tire. It was on a WH W22 chassis and it was a loose wheel bearing. Replaced the tires (actually all 6 of them) and had the bearing adjusted, end of vibration. it rode smooth as silk (well as smooth as any WH chassis I ever rode in).
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Old 11-11-2012, 03:54 PM   #18
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paul the vibration is only at 54-58 mph did your do that. at 60 mph it is perfect. below 54 also perfect
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Old 11-11-2012, 04:10 PM   #19
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vettenutO.....The coach may have been towed for one reason or another before you bought it. Typically, that means that a two truck driver dropped the driveshaft at the rearend and may not have marked it. It might be a cheap check to drop the shaft and turn 180 degrees and reconnect. Even if it doesn't fix it, it may tell you a lot....problem may disappear or get worse, leading to the driveshaft being the issue. It's about a 20 minute job.
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Old 11-11-2012, 04:21 PM   #20
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I think I've read everything here but haven't seen anything on an alignment or if this rig has a steering stablizer.
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Old 11-11-2012, 04:43 PM   #21
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monkey i have a 3 pcs driveshaft or so im told. i have not been underneath it. this motorhome has only 15k miles on in and was kept in heated storage. the guy who owned it was one that does every thing himself, and it shows. i guess i will go after the driveshaft balance. what is weid at 60 mph its smooth as can be. i wounder if i screw it up if i drive to fl. this winter.
Ours also smooths out around 60 mph... Not to say it's the same problem as yours,,, but,,,, DW has never noticed it, (or said anything, which she would) , but being an old trucker,, I notice it... I'd say,,, In My Opinion , that if you drive at a speed where it is smooth, you won't hurt a thing. IF you drive at the speed where things are vibrating, then sooner or later it will wear things out... Drive 60 mph or so when reasonable, and don't worry about your trip... You've checked a Lot of things,, that's Good !! I was (am) worried about a wheel bearing(s) with almost 90K on it. But then again, I wouldn't see that as so much speed sensetive... Good luck, and please keep us informed on what you find.
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Old 11-11-2012, 06:08 PM   #22
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monkey i dont have 90k miles on this motorhome it has only 15k miles on it
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Old 11-11-2012, 09:16 PM   #23
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How much weight did it take to balance the tires? What brand of tires are on the coach and what age? Have the tires been repositioned on the rims (180 deg.) if the weight it too to balance was significant? How (what method) were the tires balanced?
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Old 11-11-2012, 09:31 PM   #24
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A few years ago we had a vibration issue with our MH. It turned out to be a tire the was out of round. Moved it to the right side inside dual and the ride was much better. Last year we replaced all of the tires and the ride imporved even more.

Just because the tires are new, does not mean that there may not be an issue with them. Try moving one to the rear and see if the vibration changes
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Old 11-11-2012, 09:47 PM   #25
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Bent axle face/flange?
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Old 11-12-2012, 09:37 AM   #26
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Quote:
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paul the vibration is only at 54-58 mph did your do that. at 60 mph it is perfect. below 54 also perfect
No, but the check for loose wheel bearing is very simple, lift tire off the ground and see if you can wiggle it by gripping the top and bottom of the tire, it should not wiggle!

Check tires for uneven wear. If none of the above, revert to drive shaft as possible source of vibration.
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Old 11-12-2012, 06:29 PM   #27
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A few years ago we had a vibration issue with our MH. It turned out to be a tire the was out of round. Moved it to the right side inside dual and the ride was much better. Last year we replaced all of the tires and the ride imporved even more.

Just because the tires are new, does not mean that there may not be an issue with them. Try moving one to the rear and see if the vibration changes
+2 on this .. I had the same problem with brand new tires and found my right front tire was a bit out of round. It was NOT out of spec but at the outside limit of in spec. I have Goodrich st230's and the dealer replaced it with a new tire. He said he would sell it to a trucker for a trailer or drive tire
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Old 11-12-2012, 06:55 PM   #28
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My vibration was at 68mph. Coach was aligned as the front driver side wheel had more wear on outside of tire (that tire was sent to the rear drive axle, interior). The vibration left for about 20 hours but came back. I ended up replacing the two front tires but had the tire shop put my wheels on the balancing machine to see if they might be out of round. The tire on passenger side had a serious "wobble" in it. The tire man said it was a defective wall or the tire was not mounted properly when installed. The tires were 2005 so I decided to replace them anyways but wanted to see.
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