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Welding a Jeep Frame?

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MO

06-30-2002 07:58:53




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I remember reading once that there might be something special that needs to be done when welding on car and truck frames because they are hardened or tempered or something. Does that sound right? If it is, could someone bring me up to speed on the right procedure? I need to weld the motor mount back on the frame, because the guy that had it before me didn't do it very good. Thanks for the help.

MO

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mike

07-05-2002 21:03:58




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 Re: Welding a Jeep Frame? in reply to MO, 06-30-2002 07:58:53  

Its hard to picture verticle/horizontal with no diagram to look at,which way your imagining it in your mind determines that, you know. So what you need to think about is the way the frame would crack if it cracks. Never weld much in that direction because cracks like to form beside a weld where the metal has been heated.This would only happen if the frame is used hard a lot.Under normal cicumstances you probably wouldn't have a problem especially on an old jeep.But better safe than sorry.

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T_Bone

06-30-2002 12:27:29




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 Re: Welding a Jeep Frame? in reply to MO, 06-30-2002 07:58:53  
Hi MO,

You didn't give what year Jeep. I haven't read the mfg. welding procedures for new Jeeps. You might want to do a net search to see if they have any "special" considerations.

Most important is keeping the ground very close to your work area, battery disconected. For my personal prefference, if I was going to weld close to the ECM/PCM, I would remove them. Do not ground thru a bearing or where current can travel thru a bearing.

Most frame welding procedures you want 1-1/2" maxmium vertical welds, skip welded oposite sides with NO horizontial welds. Do not tie vertical welds to horizontial welds, ie; leave the corners without welds.

Since motor mounts generally have alot of oil on them, preclean with a torch and burn off all the oil. Oil will add carbon to the weld and make it brittle.

The above welding procedures can be applied upto 2002 Ford frames.

T_Bone

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Jon_in_MD

07-02-2002 11:09:31




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 Re: Re: Welding a Jeep Frame? in reply to T_Bone, 06-30-2002 12:27:29  
Agree with the T_Bone's grounding recommendation. I've accidentally welded the Ford rear end solid with a stick welder. When I was young and foolish, while we were repairing a leaky exhaust, I just thought it would be ok to leave the clamp where it was for a small tack weld. I was wrong and costs us couple of hundred dollars in drivetrain parts.



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T_Bone

07-03-2002 12:15:26




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 Re: Re: Re: Welding a Jeep Frame? in reply to Jon_in_MD, 07-02-2002 11:09:31  
Hi Jon,

Mine was at Coors on a bottle washer. I had been welding fulltime for about six months when the Super sent me on top of this bottle washer to weld some hangers.

The next day I came in and they have all the bearings torn out replacing them. Several hundred bearings they replaced. I had grounded at the bottom of the bottle washer and strung my lead to the top very back of the unit. Got every bearing in the unit.

No one said a word to me!

T_Bone

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J.K.

06-19-2003 21:22:35




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 Re: Re: Re: Re: Welding a Jeep Frame? in reply to T_Bone, 07-03-2002 12:15:26  
That was you?!!!

Regards,
J.K. (Just Kidding)



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