Control arm bracket seperated from rear diff...3rd time
#1
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Control arm bracket seperated from rear diff...3rd time
So after going out to the trails yesterday the bracket connecting my left upper control arm to my rear differential broke off at the weld, as shown in the pictures. This is now the third time I have had this problem on one side or the other, and after last time I even had the gussets added, as seen in the pictures. I did a search and was not able to find any other threads about this, but there is clearly some problem with my setup that is causing this to happen (I have a 4" suspension lift). I am pretty sure these are what I need to fix the problem, but I wanted to confirm that this will fix my problem before I spend that much money http://www.allprooffroad.com/90954runnerrearsuspension
#3
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Looks like it's time for a rear leaf suspension.... j/k that sucks sorry to hear it.
I second that the welds aren't penetrating enough..
I second that the welds aren't penetrating enough..
Last edited by 934rnr; 02-15-2009 at 12:54 PM.
#4
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Try having an experienced shop redo the welds and gussets.
No offense but I weld and fabricate as part of my job and when I have something super critical I call in the big boys that do it every day for 20-30 years, that's all they do..........my stuff is very good....theirs is like artwork.
To me I would think that area of your rig is very critical and you should not be shy on spending some bucks to have a real good shop help you out.
#5
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I actually paid someone to do those welds and gussets, as I do not have a welder or much experience welding. Since it is the third time this has happened I am wondering if having my stock lower control arms on my lifted truck simply puts too much pressure on those joints when I am 4-wheeling. I am not sure that better welds alone will solve the problem.
#7
Those welds are garbage. Looks like an 8 year old welded it.
And the reason they are breaking off, besides the obvious weld issue, is the added leverage you have put on it with the drop bracket lift. I would have someone weld that Correctly, and then get those arms with the johnny joints so there is less twisting force placed on the mounts.
And the reason they are breaking off, besides the obvious weld issue, is the added leverage you have put on it with the drop bracket lift. I would have someone weld that Correctly, and then get those arms with the johnny joints so there is less twisting force placed on the mounts.
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#8
The way it broke makes me think it was poorly welded. I think it needs more weld penetration. Are you sure that it wasn't brazed or something That said, there is a tonne of extra leverage on the bracket that it wasn't designed for. I think you either have to redesign the 4 link setup or go leaf springs for a reliable set up.
Last edited by Matt16; 02-15-2009 at 06:35 PM.
#9
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I agree....that those welds are poor...sorry to hear you paid for those.
I see a problem with that pivotable shackle on top of the bracket....what the hell is that all about that is non-functional in doing what it needs to do.
edit---ok...I see that the shackle is not a shackle...that it is bolted down below and it is "fixed" like it should be. I also agree that it is causing excessive leverage on the housing welds. Better welds and better bracing to the housing are needed(not just that simple triangle brace).
ZUK
I see a problem with that pivotable shackle on top of the bracket....what the hell is that all about that is non-functional in doing what it needs to do.
edit---ok...I see that the shackle is not a shackle...that it is bolted down below and it is "fixed" like it should be. I also agree that it is causing excessive leverage on the housing welds. Better welds and better bracing to the housing are needed(not just that simple triangle brace).
ZUK
Last edited by ZUK; 02-15-2009 at 08:24 PM.
#11
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additional note--- the way that triangle brace was positioned did very little for actually bracing it up.....a poorly positioned brace. It needs a strong MIG weld on the backside where the brakeline is bolted to....it also strongly needs a long rectangular plate on the frontside.
Last edited by ZUK; 02-15-2009 at 08:40 PM.
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#16
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