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Proper Jack Location

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Old Jul 12, 2005 | 05:55 PM
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KeithE524
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Question Proper Jack Location

Hi everyone,
I just purchased a 3 ton jack for my 99 Expy (4x4) and I was wondering what the best location was to raise the front. I also purchased a pair of 3 ton jack stands. I tried the side rail below the front doors and that raised it well, but I want to make sure before I do any work under the vehicle.
Thanks,
Keith
 
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Old Jul 12, 2005 | 06:21 PM
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Can't go wrong with the frame.
 
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Old Jul 12, 2005 | 06:28 PM
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Personally I'd be carefull with the side rails, I don't know about the Expys but some times you can crush the sheet metal right there pretty easily.

I'd stick with either the frame, or the suspension A-arms, depending on what you're trying to do.
 
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Old Jul 12, 2005 | 06:35 PM
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always lift from the frame and never support the a arms with jack stands it is very dangerous.
 
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Old Jul 12, 2005 | 06:37 PM
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I thought that the side rail was part of the frame. Am I wrong? It definitely wasn't sheet metal that I was jacking up. I need to get underneath to change out my starter.
Keith
 
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Old Jul 12, 2005 | 06:38 PM
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What side rails? lift from the frame rails you can't miss them.
 
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Old Jul 12, 2005 | 06:56 PM
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Maybe that is what I meant. Sorry about that. Do the frame rails run front to back? That is what I jacked up.
Keith
 
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Old Jul 12, 2005 | 07:15 PM
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Yes, they run the length of the truck. When I lift our expy, i either jack under the rear diff, or under the engine crossmember.
 
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Old Jul 12, 2005 | 10:50 PM
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I always heard you were not supposed to jack up a vehicle from the rear dif. Not exactly sure why not, it's just what I hear.

Tucker
 
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Old Jul 13, 2005 | 12:22 PM
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did anyone care to read the directions that came with the stock jack? Up front you are supposed to jack the A arms, there is a little lip where you are supposed to place the jack. In the back, you should jack on either side of the differential.
 
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Old Jul 13, 2005 | 12:50 PM
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Let me clarify my post, I was referring to the center of the dif.

Tucker
 
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Old Jul 13, 2005 | 12:51 PM
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OK, MOOK929RR, but if you jack up the A arms (lower control arms) at the lip for the stock jack, where would you place a jack stand?
 
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Old Jul 13, 2005 | 01:09 PM
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so then raise the truck by the side rails as you did before, and then lower it onto the jackstands that you place under the lip of the A arms... You have a jackstand under each a-arm, and the front of the vehicle is safely off the ground.
 
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