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#420794 - 03/12/03 01:54 AM
Lower Control Arm Failure and Fix
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Admin
Member
Registered: 16/08/00
Posts: 17103
Loc: Minneapolis, MN
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Two years ago I posted a picture of fractures starting around the shock mount on the lower control arm. I posted an updated picture last year as the fracture began to worsen. Being a procrastinator, I put off fixing it until last night, after it had progressed to the following. I new it was getting bad, but hadn't been driving the Xterra lately, and only noticed this amount of damage after lending my X to a friend who lives at the end of 15 miles of washboard. That large amount of bumpy miles finally did it in. Erik from RMXC came over with his welder last night to finally put a band-aid on this problem (which I have seen happen to completely stock Xterras). First we got the mount back to its initial position with a c-clamp, and cleaned up the area for welding. I then (doing my best MVM impersonation) cut and shaped some straps to go over the shock mount. The cracks were welded, then the strap was laid over the shock mount and welded in place. It isn't pretty, but it's a lot better off than it was, and should hold up to a few more years of abuse. If you wheel your Xterra, you might want to take a look at this area of the lower control arm as it appears to be a weak spot.
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#420796 - 03/12/03 06:38 AM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 17/08/00
Posts: 13694
Loc: Baltimore, MD
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So far so good, had a look for this specific problem when I changed my oil last weekend.
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#420798 - 03/12/03 09:11 AM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 17/08/00
Posts: 13694
Loc: Baltimore, MD
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Might be a good time to remind folks that this is caused by the fact that the Bilstein shocks aren't quite long enough, right? Something about how they measure length to the end of the mount vs. most measure to the eye or something...
Brent
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#420800 - 03/12/03 04:29 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 20/06/01
Posts: 620
Loc: USA
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Ian - what size was the band iron you used 1/8th? and how did you guys weld it up arc or MIG? nice weld pattern whoever did it !!
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#420802 - 03/12/03 06:43 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 27/02/01
Posts: 5206
Loc: Seattle, WA
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That's a good wire feed bead, but It doesn't appear that gas was used (required for MIG).
Aside from some spatter, another way to tell is that most welders that you would just pick up and carry somewhere like that won't weld anything that thick using gas. A small 110V wire feed welder (which I suspect was used) hooked up with gas for MIG welding will only do sheet metal.
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ChuckH "Every morning when I wake up I know it's not going to get any better 'til I go back to sleep again!" Al Bundy
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#420804 - 03/12/03 06:48 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 27/02/01
Posts: 5206
Loc: Seattle, WA
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Originally posted by xoc: There was a big tank of gas here. That was MIG then. He must have a bigger welder than I thought. I don't think my little portable welder would do 1/8" using gas.
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ChuckH "Every morning when I wake up I know it's not going to get any better 'til I go back to sleep again!" Al Bundy
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#420806 - 03/12/03 07:41 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 18/03/02
Posts: 1229
Loc: Fort Carson, CO
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A 110V MIG using a flux core wire can do 1/8" and no gas is required.
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#420807 - 03/12/03 08:19 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 27/02/01
Posts: 5206
Loc: Seattle, WA
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Originally posted by Axle: A 110V MIG using a flux core wire can do 1/8" and no gas is required. True (sort of), and infact a 110V welder will do heavier than 1/8" using flux core wire. Mine will do 1/4" using flux. However, flux core welding is not a MIG process. MIG uses gas to shield instead of flux and that's what makes it a MIG process. I have the gas kit for mine but have never used it because all the welding i've done with it was too heavy. Anyway, just wanted to clear that up. Ian's probably really excited this turned into a welding thread!
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ChuckH "Every morning when I wake up I know it's not going to get any better 'til I go back to sleep again!" Al Bundy
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#420808 - 03/12/03 11:53 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 23/08/01
Posts: 4757
Loc: Mt. Zion, IL
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#420809 - 04/12/03 06:38 AM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 16/08/00
Posts: 884
Loc: Cin city, Oh.
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Now stop doing your Chia impressions of breaking your junk.
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#420810 - 04/12/03 07:27 AM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 22/04/01
Posts: 1825
Loc: El Paso Tx.
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Rats I didn't know that it would eventually get that bad. My lower control arms are showing the cracks from your first picture. At least now I know where it will be heading.
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#420811 - 04/12/03 10:19 AM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 30/03/02
Posts: 118
Loc: Chapel Hill, TN
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Originally posted by ChuckH: Originally posted by xoc: [b]There was a big tank of gas here. That was MIG then. He must have a bigger welder than I thought. I don't think my little portable welder would do 1/8" using gas.[/b]Correct, it was MIG. 1/8" is the thickest I can weld with my welder using gas. I could of used flux core, but I'm better with gas.
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#420813 - 04/12/03 03:42 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 28/08/01
Posts: 4806
Loc: East Bay, CA
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nice clean CV boot.
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#420815 - 04/12/03 06:10 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 28/08/01
Posts: 4806
Loc: East Bay, CA
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But its clean in this pic? It looks like nobody have done any cleaning yet. How the heck did the boot not get dirty like the rest of the area? Even if you cleaned it, you couldn't get it THAT clean. It looks brand new.
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#420817 - 04/12/03 06:53 PM
Re: Lower Control Arm Failure and Fix
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Member
Registered: 20/12/01
Posts: 4932
Loc: Fort Worth, TX
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I have a theory about this. I wheel my truck hard and have not developed these cracks. I run RS5000s. Maybe the to short shock started the initial crack, and the proper length ones just made it worse over time. What do you think Ian? It seems like a proper length shock should never do that.
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