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Old 03-25-2016, 10:36 AM   #15
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Mine are also welded on, but it's just the brackets that are welded on, and then the actual jacks are bolted to the brackets.
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Old 03-26-2016, 06:06 PM   #16
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Yes the bracket welded on the frame is what broke off.
That never shut happen sloppy weld I guess.
Peter
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Old 03-26-2016, 06:43 PM   #17
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I wonder if possibly the coach wasn't lifted too high and the wheels allowed to slide. That for sure would rip the bracket off the frame.
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Old 03-26-2016, 09:58 PM   #18
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Power Gear Electronic Leveling System

Welding is a cohesive process, not an adhesive process. "Welds" on top of the parent metal don't work, even if they LOOK "pretty" on first glance.




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Old 03-27-2016, 09:54 AM   #19
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What is stronger than welding? Bolts, pop-rivets? How should metal be attached? Or is it something about this weld? I know you said it's not adhesive to weld, so it's not just the surface that is being attached in a weld, the whole metal of both pieces is unified in one cohesive structure. Just not in this case because it broke?

I am asking because I don't know, but have always been lead to believe welding is GREAT. In looking this up I find that Ford is moving away from welding to riveting, but was lead to believe it was for uniformity of construction, less chance of doing a bad rivet than a bad weld. Also, better in dissimilar material construction.

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Old 03-27-2016, 11:02 AM   #20
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I certainly don't profess to know all there is to know about welding, but I have done some of it, and do know a little about it.

To my knowledge, you cannot weld dissimilar metals such as aluminum and steel together.

To get a strong weld, it must be hot enough to melt both pieces at the weld so the two pieces and the metal inserted into the weld all flow together. I think this is what J. Morgan is saying is wrong with the weld in the pictures.

If done right, a weld is stronger than the metal adjacent, and typically, again if done right, the weld will not fail, but the metal near the weld if stress too much.

If the weld is not hot enough, meaning the metals don't flow together, it is sort of like solder and will break off when stressed. To the untrained eye, it will look good, but won't hold.

I have a welder, but if anything structural that carries a heavy load needs welded, say like a hitch, I take it to a professional.
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Old 03-27-2016, 11:13 AM   #21
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SteveH good explanation.
Yes welding is the strongest connection of metals. Not every metal can be welded.
In my case it was just not welded correctly. Pure craftsmanship wonder it lasted as long as it did.
This parts is welded on not Airstream to the Freightliner chassis frame rail.
This teaches never go under the coach when lifted up on the levelers.
Peter
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Old 03-27-2016, 11:22 AM   #22
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In my view, everything Steve said here is right on the money.

Quote:
Originally Posted by SteveH View Post
I certainly don't profess to know all there is to know about welding, but I have done some of it, and do know a little about it.

To my knowledge, you cannot weld dissimilar metals such as aluminum and steel together.

To get a strong weld, it must be hot enough to melt both pieces at the weld so the two pieces and the metal inserted into the weld all flow together. I think this is what J. Morgan is saying is wrong with the weld in the pictures.

If done right, a weld is stronger than the metal adjacent, and typically, again if done right, the weld will not fail, but the metal near the weld if stress too much.

If the weld is not hot enough, meaning the metals don't flow together, it is sort of like solder and will break off when stressed. To the untrained eye, it will look good, but won't hold.

I have a welder, but if anything structural that carries a heavy load needs welded, say like a hitch, I take it to a professional.




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Old 03-27-2016, 11:52 AM   #23
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You made me look on google at welds looking for examples of poor penetrating welds, I got sidetracked in the image search on cool stuff instead, I think I must share a few...

Click image for larger version

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Old 03-27-2016, 12:09 PM   #24
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Amazing, proves there are artists in every profession.

I'm most impressed with the lizard.
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Old 03-27-2016, 07:48 PM   #25
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The penetration looks good an this weld just did not feed enough welding rod.
Got a few good pictures too Click image for larger version

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Here is some metal art. The welds on this don't have to hold anything that's good.
Peter
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Old 04-08-2016, 02:59 PM   #26
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Quote:
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mine is "semi " automatic. I extend until all feet touch (sometimes with a board under the lowest point or side if necessary) and then use the arrow keys to center it.
Mine has 2 knobs 1 is Auto and 1 is Manual.
I use the Auto always and it used to level well the few times I had it actually working.
I had a leak on on the rear passenger side which i replaced the complete unit with a used one. I plan to rebuilt the old one and have it either as spare or sell it rebuilt.
The my dump valve got stopped working and maybe that was the reason the pump got busted.
This was fixed in Newport Dunes CA. I worked the leveling system a few times and it worked great.
Drove the the next stop and leveled again and broke the bracket off.
I hope I get it fixed now at my stop at Master Tech RV in Elkhart IN who also will look at the roof to get it redone.
Peter
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Old 04-13-2016, 08:00 PM   #27
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MasterTechRV welded it back on.
Well done.
This is a job with a owner Tim who knows what he is doing.
The problem there is timing.
$18k to get the roof done right.
Still thinking about it.
Peter
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Old 04-13-2016, 08:03 PM   #28
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Guys with experience.
Now since my levelers are working again how do you level your rig?
Do you lower your air suspension first?
Or do you just leave it in auto?
Let me know.
Thanks
Peter
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