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Old 07-27-2006, 01:28 PM   #71
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Quote:
Originally Posted by Pahaska
You need to go back and CAREFULLY reread Rich's BLOG. There were thousands of trouble-free miles on the retorque that was done when the disks were installed. The failure occurred 50 miles after wheel replacement resulting from a flat tire. Rich plainly said that the wheels were re-torqued 50 miles prior to the failure by the service guy who replaced the tire. That is the obvious cause of the problem. There was no indication of high temperatures on the studs or the hubs.
Uh, please re-re-read. The tire that came off was not the tire that had gone flat. The tire that had gone flat and was replaced with the steel spare was the one behind the wheel that came off.
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Old 07-27-2006, 01:29 PM   #72
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I too have the Centramatics that were installed at the time the disk brakes were installed. Like John has stated, I've left bottles of shampoo and soap out that have remained in place over long stretches. I personally know the tech that did Rich's install as well as mine. He also did the disk brakes on my Caravel and Cruiser. He's very meticulous about his work and I would bet my paycheck that everything was right when it rolled out of the shop. While mine did seem to have backed off a bit, the nut only turned maybe 1/16" before the torque wrench, set to 85 ftlbs, (Proto brand rated to 200ftlbs) clicked. I just wonder if my owners manual is correct in stating 85 ftlbs on the aluminum wheels.
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Old 07-27-2006, 01:43 PM   #73
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Quote:
Originally Posted by Minnie's Mate
Uh, please re-re-read. The tire that came off was not the tire that had gone flat. The tire that had gone flat and was replaced with the steel spare was the one behind the wheel that came off.
Please reread my post. I never said that it was that wheel that came off. ALL of the lug nuts were retorqued when the flat was replaced as was confirmed by Rich by email this morning.

There is too much posting and not enough careful reading going on.
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Old 07-27-2006, 01:49 PM   #74
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Hear Hear.

Quote:
Originally Posted by 62 Overlander
I personally know the tech that did Rich's install as well as mine. He also did the disk brakes on my Caravel and Cruiser. He's very meticulous about his work and I would bet my paycheck that everything was right when it rolled out of the shop.
Denver did my disk brake install also and I continue to be impressed by his workmanship. As I posted earlier, I watched him torque all wheels and I could not ask to have someone do a more meticulous job. He can work on my trailer anytime.
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Old 07-27-2006, 03:38 PM   #75
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Quote:
Originally Posted by Pahaska
Please reread my post. I never said that it was that wheel that came off. ALL of the lug nuts were retorqued when the flat was replaced as was confirmed by Rich by email this morning.

There is too much posting and not enough careful reading going on.
Sorry, it came across as if it were the same wheel.
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Old 07-27-2006, 06:24 PM   #76
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ok pahaska ,

We all have read the blog plenty and I reread it multiple times and carefully
looked at the photos ,I do know what I am reading and looking at.THe steel wheel replaced the flat ,thats that.Second his blog says after thousands of trouble free miles ,this statement was made after he said This doesn't seem
possible as it should have been the one we worked on last week ,but it was
the wheel in front of it .Never did anyone nor I say that the shop that put the disc brakes on had anything to do with it ,Further ,I believe you guys on the level of workmanship at the shop who did yours and Richs coach.That
isn't the problem .Further more ,there is plenty of reading being done and
lots of good posting and possible ideas being thought of passed around .I recieved E mail from Rich earlier this week about the whole deal myself
so I know what he said to me in the email and what I asked him .how come the steel wheel is still on the trailer and it did not come off if the same
shop torqued them all? pahaska you said ALL the lugs were retorqued
then 50 miles later pow wheels leaving the coach, not the steel wheel.
so thats the next question to be answered. I was hoping that this problem
could be solved and ideas tossed about ,getting everyone to think about
this very seriouse situation and a solution .I am fine with all thoughts
and ideas ,keep posting people .Let this not become an arguement amongst
this forum PLEASE .

Scott

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Old 07-27-2006, 09:22 PM   #77
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The one constant thing I have found after going thru alot of our posts
on this thread ,is the centramatics installed .They are held tight against the
drum or rotor with the wheel I believe ,is it possible that having those between the wheel and rotor /drum cause torque readings to be off? they
are another piece of metal in between the torqued wheel and the rotor /drum
whichever you may have .Are all the loose wheels on this thread ,not just
Rich's ,aluminum? Any one have a steel wheel come off ?the aluminum wheel
does not "give" when torqued ,but the steel wheel will have some small
amount of "give" to it when tightened down .It is obviouse that wheel studs
are being streched by impact wrenches on these trailers ,easier to have happen with the aluminum wheel as it is rigid do to the metal alloy it is made from .I don't want to make a blanket statement on a peticular reason the
wheels are loosing their torque as to only one reason as it may be a couple
of things combined .

Scott.
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Old 07-27-2006, 09:36 PM   #78
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Centramatics

I don't think the Centramatics are a factor. I had them on my Classic 25 for just about the whole time I owned it and never had a loose lug nut. The part of the Centramatic that is between wheel and hub is a fairly thin sheet of a hard aluminum alloy that would have negligable give. I have only had them on my current for a few hundred miles , but all lug nuts were right at 85# torque when I checked them Tuesday.
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Old 07-28-2006, 12:06 AM   #79
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Loose Wheels

Hi, this is an age old problem going way back to the early days of alloy / aluminum wheels. Steel wheels have a built in flex factor at the lug nut hole area. Aluminum wheels don't. Aluminum wheels are a lot thicker and Aluminum expands differently than steel. [due to heat] Because of this, it has always been recommened that you retorque alloy wheels after driveing some distance. Just torqueing your wheels correctly and hitting the road isn't enough and not necessarily the repairs man's problem.
I check my lug nut torque every time I hitch my trailer to my tow vehicle. [both on the trailer and truck] But, if I had the wheels off or serviced, I torque them just before I hit the road and at maybe the first rest stop or gas stop I check them again.
I personally disagree with the statement that an out of balance wheel will loosen the lug nuts. I have driven customer's vehicles that were so out of balance they would shake your teeth out [exagerated] but never lost a wheel or lug nut. But, if you have loose lug nuts to begin with, and out of balance wheels, they sure will come off quicker!

Bob
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Old 07-31-2006, 10:43 AM   #80
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Wheel Torques

From the Airstream Dealers Manual
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Old 08-01-2006, 10:44 AM   #81
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try it again

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Old 08-01-2006, 01:27 PM   #82
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Counterfeit Studs?

Any final results on metallurgical exam of studs? The aviation maintenance world suffers from lots of counterfeit hardware (screws, bolts, nuts, etc) made of wrong alloys and with improper heat treatment, but in perfectly matched packaging and markings... They find their way into commerce via intermediate distributors, but are hard to trace back to Asian origins...

Without laying blame on Kodiak or installer, it seems possible and likely that multiple concurrent stud failures might just as easily be result of bad batch of studs installed in good faith without knowledge that they were fakes... I know torque is important, but think about how many RV owners are driving around without properly torqued wheels and how few of them are shattering 5 studs and flying off... I'd want hardness and chemical tests on a couple studs to compare against original specs. I'd also be changing ALL the studs on my trailer right away, and probably having an extra one sent to local testing lab along the way....

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Old 08-01-2006, 01:46 PM   #83
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Quote:
Originally Posted by ZoomZoom
hey zoom zoom......
EXCELLENT!

from where did this come?
not in my owners manual.
great info...

cheers
2air'
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Old 08-01-2006, 01:52 PM   #84
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Quote:
Originally Posted by 2airishuman
hey zoom zoom......
EXCELLENT!

from where did this come?
not in my owners manual.
great info...

cheers
2air'
2air,

He said Airstream Dealeres Manual.

Bill
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