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10-06-2014, 04:27 PM
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#1
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Junior Member
Join Date: Apr 2014
Posts: 13
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Drive train vibration
When I drive down the hwy there is a vibration noise that sounds off when the rv is in between acceleration and deceleration. It also happens when I go over pumps in the road and bounces. What is it?  I have a 38ft Alpine motorhome 2001.
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10-06-2014, 09:33 PM
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#2
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Senior Member
Alpine Owners Club
Join Date: Mar 2009
Location: Surprise, AZ
Posts: 836
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Just a guess ... sounds like a possible U-joint problem.
__________________
Bob Bowers (Surprise, AZ)
2003 Alpine Coach 40' FDTS
2014 Jeep Cherokee Lattitude
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10-06-2014, 09:46 PM
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#3
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Registered User
Newmar Owners Club
Join Date: Nov 2008
Posts: 2,899
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FWIW-The U-joints are supposed to be lubricated every 3000 miles. Make sure you have a jack stand under the coach (2 would be better-capable of holding 20,000 lbs) so it don't fall on you if the air suspension fails. Having the jacks extended but not dropping the air bags will give you enough room to crawl under it and do them. Have them inspected by a qualified shop if there is a lot of vertical or horizontal movement in them using your hands. I hate this job, and it's due on my coach as well.
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10-06-2014, 10:06 PM
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#4
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by Renipladlo
FWIW-The U-joints are supposed to be lubricated every 3000 miles. Make sure you have a jack stand under the coach (2 would be better-capable of holding 20,000 lbs) so it don't fall on you if the air suspension fails. Having the jacks extended but not dropping the air bags will give you enough room to crawl under it and do them. Have them inspected by a qualified shop if there is a lot of vertical or horizontal movement in them using your hands. I hate this job, and it's due on my coach as well.
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Our Spartan chassis calls for 5,000 miles on the driveshaft slip joint and U-joints.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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10-07-2014, 12:40 AM
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#5
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Registered User
Newmar Owners Club
Join Date: Nov 2008
Posts: 2,899
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Again, you own a NEWMAR, we own an ALPINE, with a Peak Chassis, and our manual calls for 3000 miles service on the U-Joint, and the slip joint on the drive shaft. I think Old Scout gave me a xls file (Microsoft Excel File-you can download an excel reader from Microsoft website) showing when/what/etc., on all the maintenance items on the Coach. Some items on the chart are for air brake coaches only, as the ones with Hydraulic Brakes don't have an air reservoir/tank.
Hope the attachment made it if not send me PM for the file.
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10-07-2014, 08:39 AM
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#6
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Junior Member
Join Date: Apr 2014
Posts: 13
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Thanks Old River! I will try that.
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