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Old 07-20-2009, 11:07 AM   #15
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1968 28' Ambassador
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Originally Posted by DanB View Post
I second the above comment!

After doing my replacement, according to the "wheel well test" my axle would be marginal.

I suspect it most cases the test is probably ok, but I wouldn't spend money without taking a look at the travel.

True this is some give and take but my rim was on or in the wheel well so it was very obvious I needed new one....

I think a lot of people are in this boat. If it is marginal, then you probably still have a little like in your axles...

The ride was so much better after I got the new axle it was like towing a new trailer...
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Old 07-20-2009, 12:50 PM   #16
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Curious info. Now, please describe for all of us the proper way to mount new axles, which apparently would involve either modifying or completely disregarding the "square notches" in the mounting plate, in order to correct the apparently intentional mis-alignment of the original equipment by Airstream Engineers. Thankyou- tim
Installing new Henschen axles on all 1969 and newer Airstream trailers, is real easy.

You lift them in place, and insert the two 5/8 inch bolts on each side.

In the case of the axle mounting plates being located differently, simply move the axles forward on one side or rearward on the other side. We suggest moving them rearward.

Moving them entails enlarging the square notch forward or rearward as the case may be, then also making the mounting holes oval instead of round, on the same side, only.

If the axle/axles are being replaced, using grade 8 mounting hardware, properly torqued, that will prevent the axle from moving.

Under NO circunstances is the square notch disregarded as you suggest.

Andy
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Old 07-20-2009, 12:54 PM   #17
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33 year old axles with 33 year old materials ( basically rubber) the answer is yes.

You won't need an axle number if one exists.

Several vendors will have axles for you.
OEM is Henschen from one vendor Indland RV in CA
Dexter - I believe they are the largest axle producer
Axis may have axles
And there may be others

There are many threads on axles in this forum if you do a search. Use the search key at the top of this page.

Getting the "proper" axle for your unit is some what of a person taste thing. Many owners will get a replacement that has a greater load capacity than the orignal. The OEM replacement will do this with the VIN of your unit. The others will do this with specs based on the measurements made of the old axle.

Searching the old threads will serve you well.

Action
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Old 07-20-2009, 04:19 PM   #18
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Originally Posted by Inland RV Center, In View Post
Installing new Henschen axles on all 1969 and newer Airstream trailers, is real easy.

You lift them in place, and insert the two 5/8 inch bolts on each side.

In the case of the axle mounting plates being located differently, simply move the axles forward on one side or rearward on the other side. We suggest moving them rearward.

Moving them entails enlarging the square notch forward or rearward as the case may be, then also making the mounting holes oval instead of round, on the same side, only.

If the axle/axles are being replaced, using grade 8 mounting hardware, properly torqued, that will prevent the axle from moving.

Under NO circunstances is the square notch disregarded as you suggest.

Andy
Very interesting. How do you determine which mounting plates have been intentionally mis-aligned, needing this modification you describe, and which ones are ok? And- why were any axle mounting plates intentionally mis-aligned in the first place? What is the proper torque for the grade 8 bolts? Thankyou- tim
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Old 07-20-2009, 04:41 PM   #19
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Very interesting. How do you determine which mounting plates have been intentionally mis-aligned, needing this modification you describe, and which ones are ok? And- why were any axle mounting plates intentionally mis-aligned in the first place? What is the proper torque for the grade 8 bolts? Thankyou- tim
Grade 8 1/2 inch bolts are torqued to 119 foot pounds.

Grade 8 5/8 inch bolts are torqued to 230 foot pounds.

It doesn't matter which axle mounting plate is off.

Make the smaller dimension match the larger dimension.

The is another post that goes into the "why" details.

Andy
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Old 07-20-2009, 06:15 PM   #20
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the "why" post

http://www.airforums.com/forums/show...0&postcount=27
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Old 07-21-2009, 08:51 AM   #21
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OK, will torque 'em. Thanks for the "why" link, no unusual tire wear on my rig, and it handles great, so will leave well enough alone.
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