Rear Cross-Member

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A year or two ago, the stock tire carrier was rusting through the body locations on the back of the Jeep.  To correct this I went looking for a new rear bumper and tire carrier combo.  I found a company on eBay that also sold direct called TKHFAB.  I found some good reviews from other Jeepers and went ahead and got one.  I mounted the bumper and carrier using the supplied frame tie-ins provided with the bumper.  After driving for a few weeks, the spare tire carrier started bouncing a lot on bumps.  There was a lot of play, so I retightened everything and it would be okay for a couple of weeks.  I always use grade 8 bolts and nuts, so the weak link started to fail.  Unfortunately it was the rear cross-member.

I got a recommendation for a local fabrication shop/off road group in the area called OBOffroad (Olive Branch, MS)  Jeff Shackleford is the fabricator and guy trying to build the shop and club.  I encourage folks in the area to check out his site and the message board.  Their group is into off-road vehicles, dirt bikes, atv's and sand rails.  After meeting with Jeff about the problem, it took us a few weeks to coordinate a time to do the work.  On a Saturday starting at 12:30 PM (with his wife waiting at home with friends) he completely fabricated a sturdier a more functional cross-member and was done by 9:30 PM.  The pictures do not do justice to the on the fly design considerations that Jeff had to deal with in building the replacement.

 

Here is a wide shop of the bumper carrier.

This is a wide shot of the the replacement piece fabricated from 1/4" 4x4 angle iron.

New frame tie-ins were built and welded to the cross-member where they bolt to the frame. If necessary, they can be welded to the frame later.

The skid plat mount was a piece of 1/8" 1 1/2"x1 1/2" angle iron welded to the back of the frame cross member and tapped and threaded.

The other frame tie-in

Rather than open holes for bumper mounts, 7/16" threaded holes were put in the cross member. Nuts and lock washers are still used on the other side for additional support.

The new cross-member is at least twice the thickness of the stock piece.