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Old 10-06-2014, 05:27 PM   #1
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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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Old 10-06-2014, 10:33 PM   #2
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Just a guess ... sounds like a possible U-joint problem.
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Old 10-06-2014, 10:46 PM   #3
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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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Old 10-06-2014, 11:06 PM   #4
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Quote:
Originally Posted by Old Rv'er View Post
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.
Our Spartan chassis calls for 5,000 miles on the driveshaft slip joint and U-joints.
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Old 10-07-2014, 01:40 AM   #5
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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.
Attached Files
File Type: pdf 2007 Alpine APEX MAINTENANCE Intervals Checks.pdf (179.3 KB, 39 views)
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Old 10-07-2014, 09:39 AM   #6
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Thanks Old River! I will try that.
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