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Old 08-23-2004, 10:58 AM   #15
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Originally Posted by Inland RV Center, In
Dave Jenkins.

The amount of water in the fresh water tank should have no bearing on the trailers levelness.

After doing all the tests that you have, I would point my fingers at having defective axles.

Contact the factory, ASAP.

Should replacements be in order, I would suggest that you increase the load rating on the replacements.

The torsion arms are between the axle tube and the backing plates.

Andy
Hi Andy:

I just got back in from outside. First of all, I note that the front axle tube (?) has a slight bow in it - about 1/4" higher in center. Is that normal? I also note that someone has chalked a date on the tube that looks like it might be the manufacurting date for the trailer - don't know if that's significant or not.

Are the torsion arms the things that look like junior shocks? (When you say "between the axle tube and the backing plates." you're meaning that one end is attached to the plate, the other to the tube?) Just eyeballing those, they appear to have equal angles all the way around, but I can't tell for sure. The right front one, however, looks to be a little closer to horizontal than the right rear, which (if I'm reasoning this out correctly) would make the right front of the trailer low (which it is)..Is there an accurate way of getting the angles measured that doesn't require an engineering degree and $2000 of specialized shop tools?

Is it at all normal that factory-new axles might be defective? Do you have recommendations for an appropriate load rating for a 2004 28' Classic? (Or if they're elsewhere, can you point me to them?)

Thanks for your help...
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Old 08-23-2004, 12:28 PM   #16
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Dave Jenkins.

All axles must be bent in the middle. That's how they are aligned.

A torsion arm is shown in the attached photo.

Eyeballing the angle is adequate.

Normally, as the torsion arm goes rearward, a downward angle is desired.

Anything made by man, can fail. A failure rate of one out of a million, might be small, but it is still a failure rate.

Therefore it is possible to have a bad axle, in spite of the fact that it is new. All it takes is one of the eight rubber rods (four on each side), to fail.

The ratings on your axle are stamped on a metal plate, that is spot welded onto the axle tube. It should say 3500 pounds, in your case.

If replacement are made available, you might look into 4000 pound axles.
However, more than likely. the axle mounting plate would require a small modification. Not a biggie.

Again, I encourage you to talk to your dealer, "and" to Airstream customer service.

However, keep in mind that most dealers are not axle savvy.

Airstreams are not designed to be off level, side ways.

Andy
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Old 08-23-2004, 01:13 PM   #17
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2004 28' Classic
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Quote:
Originally Posted by Inland RV Center, In
Dave Jenkins.

All axles must be bent in the middle. That's how they are aligned.

A torsion arm is shown in the attached photo.

[snip]

Airstreams are not designed to be off level, side ways.

Andy
A picture is worth a thousand words! As far as my unpracticed eye can tell, the arms are at essentially the same angle. Any difference that there is would be <5 deg., I'd say.

I'll see if I can't get a live person to talk to me at Airstream support.

Many thanks for your help, Andy.
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Old 08-24-2004, 03:38 PM   #18
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Originally Posted by Dave Jenkins
A picture is worth a thousand words! As far as my unpracticed eye can tell, the arms are at essentially the same angle. Any difference that there is would be <5 deg., I'd say.

I'll see if I can't get a live person to talk to me at Airstream support.

Many thanks for your help, Andy.
I've been in touch with Airstream Tech. Support, and they say this:

"The measurements that you have given are with in our standards. I have checked and the standards are 3/4 of an inch. This is due to the measurements we have checked here."

This tends to make me feel a little better. After touching up the ntires, I measured a 9/16" discrepancy - slightly less than the 3/4" they noted.

I have asked for clarification on the statement, "This is due to the measurements we have checked here." to see what that really means.

Many thanks for all your helpful responses. I'll re-post if anything meaningful comes out my further communications with Airstream.
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