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Old 06-01-2011, 09:06 PM   #1
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Location: Fort Worth, Texas
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Rear air spring height adjustment specs...Where to find.

I found the "front" spring height adjustment specs in several places.

I also found a couple of threads for the rear

... one said the rear was set at 10.5" from frame bottom to bottom of air bag.

...then one that said 7.5" from frame rail bottom to weld on side of axle..

Guess I need a little help here if anyone can tell me where accurate rear air spring adjustment specs are located.

2001 Alpine, 350 hp., 40' FDSS
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Old 06-01-2011, 10:12 PM   #2
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Frame to bottom of air bag sounds like the Neway axle measurement. Of course if you have the OE manual for your rear axle you can verify it yourself. Or you can download the manual here:
Unfortunately that does not identify the specific model we have, but I think ours is one of the lighter ones. Measure frame to bottom of airbag support (the steel disc under the rubber bag.)
The 7-1/2" - to - weld spec appears to come from a document on the ACA website, for a 2000 coach, sent by Western RV in 2007. It's probably what they used for many years.
Franklin & Dessa
2001 Alpine 34 FDDS
Tow a 2014 CR-V
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Old 06-02-2011, 06:42 PM   #3
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Location: Ontario, CA USA
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Here are the Diagrams I received from WRV for my 2001 Alpine. The adjustment should be the same for all. I hope this helps.
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Dave Fernandez
2001, 38ft FDDS, 350 ISC, Tow 2004 Yukon
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Old 06-02-2011, 08:02 PM   #4
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Man that's great Dave ... Thanks!

Straight from the horses mouth? ....a few years back I assume? What's the scoop on that?
2001 Alpine, 350 hp., 40' FDSS
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