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question about diff crossmember removal

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Old Apr 8, 2008 | 08:43 PM
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Default question about diff crossmember removal

what exactly is it that holds the Xmember up there? is it a bolt with a nut on the end of it? a stud?

i havnt taken heat to it yet, but im having a hell of a time getting these things to budge.
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Old Apr 8, 2008 | 08:54 PM
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stock config is a bolt with a weld nut on the sombrero. Mine stripped the nut so I cut the hat off and welded a new grade 8 nut on and welded everything back up
even with the bolts removed the crossmember can be stubborn to remove, just work both sides a bit at a time.
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Old Apr 8, 2008 | 08:56 PM
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Small bolt.
There is a nut welded on the other side to the frame bracket.
Mine came off very easy.
Of course I used an impact.
Once the 2 bolts are out, use a prybar to push the ends downward away from the frame...the bushings will be holding it in place.
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Old Apr 8, 2008 | 08:59 PM
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hmm, ive got an impact laying in the tool chest i was just using this weekend. never even thought to try that.

ill give it a shot tomorrow afternoon.
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Old Apr 8, 2008 | 09:03 PM
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The cross member can pop off quite suddenly when you pry on it. I would suggest you leave the bolts slightly engaged so when the cross member breaks loose the bolts catch it before it smashes into your shin, foot, etc. A good covering of penetrating oil is a must too.

Also I'm assuming you've already removed the differential before you try this.

Good luck. I had to use a 3 foot pry bar to get mine to break free.
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Old Apr 8, 2008 | 09:05 PM
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nope, im dropping the diff with this.
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Old Apr 8, 2008 | 09:13 PM
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Oops you're right you have to do it that way. Leave the bolts partially threaded in so you don't smash your feet or worse yet drop the diff.
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Old Apr 8, 2008 | 09:16 PM
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im a little more worried about having it smash my head in, seeing as the body is on the frame and im laying under all of it.
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Old Apr 8, 2008 | 09:32 PM
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Originally Posted by another-user
im a little more worried about having it smash my head in, seeing as the body is on the frame and im laying under all of it.
Put a hydralic jack under the pig to help support it.
Or jack stands so it does not fall.
When the bushings release, it falls quick.
As Whiplash stated...leaving the bolts in a bit may help too to support it.
Also-with rear wheels off, you should be in one of the wheel wells prying on the end of the member when the member lets go.
Don't lay under it.
An assistant will be handy.
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Old Apr 8, 2008 | 09:44 PM
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oh ya, i fully intend to be off to the side when i start prying on it. i just cant put any strength into the socket wrench when im not laying under it.
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Old Apr 8, 2008 | 09:44 PM
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Originally Posted by blckslvr79
Put a hydralic jack under the pig to help support it.
Or jack stands so it does not fall.
When the bushings release, it falls quick.
As Whiplash stated...leaving the bolts in a bit may help too to support it.
Also-with rear wheels off, you should be in one of the wheel wells prying on the end of the member when the member lets go.
Don't lay under it.
An assistant will be handy.


I just did this. Whatever you do, do not lay under the car when you try to remove the crossmember and diff. The diff weighs at or near 100lbs and will hurt you if it should fall on you somehow. I had a hydraulic jack under the diff. had the bolts loosened about 1/2" and pried on the ends of the crossmember. Both sides "popped". Between the bolts only being loose and the jack under the diff, it worked out well. I then removed the bolts, lowered the jack, and slowly wheeled out the whole assembly.
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Old Apr 8, 2008 | 09:49 PM
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Originally Posted by 427-390
The diff weighs at or near 100lbs and will hurt you if it should fall on you somehow.
I believe its 127 lbs to be exact
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Old Apr 8, 2008 | 10:58 PM
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Originally Posted by another-user
oh ya, i fully intend to be off to the side when i start prying on it.
The easiest and safest way to remove the crossmember is to leave the bolts partially threaded in and use a gear puller or pitman arm puller.

Mount the puller so that the foot of the threaded rod is on the head of the bolt and the clamp arms are hooked on the lip/edge of the crossmember.

Turn the threaded rod like the puller is normally used and the crossmember will pop right off, one side at a time.

Last edited by 67-73-76; Apr 8, 2008 at 11:01 PM.
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Old Apr 9, 2008 | 10:27 AM
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Originally Posted by stinger12
I believe its 127 lbs to be exact
I knew it was heavy, just didn't know it was that much!
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Old Apr 9, 2008 | 10:35 AM
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Originally Posted by stinger12
I believe its 127 lbs to be exact
Plus that heavy 80-90 wt gear oil
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Old Apr 9, 2008 | 10:53 AM
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Originally Posted by 67-73-76
The easiest and safest way to remove the crossmember is to leave the bolts partially threaded in and use a gear puller or pitman arm puller.

Mount the puller so that the foot of the threaded rod is on the head of the bolt and the clamp arms are hooked on the lip/edge of the crossmember.

Turn the threaded rod like the puller is normally used and the crossmember will pop right off, one side at a time.
3-jaw gear puller. I tried prying mine loose with a bar, it wouldn't budge on one side.
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Old Apr 9, 2008 | 02:11 PM
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i think its time for the torch. i swear those bolts are welded in.

looks like its time to order some 150 dollar bushings...
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To question about diff crossmember removal

Old Apr 9, 2008 | 02:43 PM
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Originally Posted by another-user
i think its time for the torch. i swear those bolts are welded in.

looks like its time to order some 150 dollar bushings...
Why not cut the heads off of the bolts using a dremel, the you can at least drop the crossmember down. You'll be left with a bolt shank that you can then heat up and remove using a pair of vise grips. It will save you $150. I did this with one of my half shaft bolts. The sucker was impossible to remove, so I cut the hex head off of the bolts and removed the shafts. I was left with a shank and a little PB blaster with the vice grips removed the shank.
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Old Apr 9, 2008 | 03:46 PM
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Originally Posted by another-user
im a little more worried about having it smash my head in, seeing as the body is on the frame and im laying under all of it.
Exactly what I was thinking.
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Old Apr 9, 2008 | 04:04 PM
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Originally Posted by another-user
i think its time for the torch. i swear those bolts are welded in.

looks like its time to order some 150 dollar bushings...
Just replaced mine about a week ago.
Got a pair off Ebay for $100.
New Reproductions.
Seller claims same materials as OEM.
I bought and used them-very happy with them.
Look and feel the same as OEM.


http://cgi.ebay.com/ebaymotors/ws/eB...m=190197383190

current auction
http://cgi.ebay.com/ebaymotors/1963-...3286.m20.l1116

Last edited by blckslvr79; Apr 9, 2008 at 04:07 PM.
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