![]() ![]() This may require that you modify the torx bit on a grinder. Then you can drive the bit into the head of the bolt with a hammer for a super tight fit. You need to find a torx bit slightly larger than the bolt head size. I always have a set of torx bits in my tool box of hex head bolt troubles (see picture above). ![]() If you can not get them out with a star socket or oversize hex then you will have to drill the head off and find a good used replacement motor mount arm. Motor mount bolts (particularly 116, 123 and 126 chassis) - you can not get to the heads on some of these as they are up inside a hole in the subframe.Rent a right angle drill if space is limited. If all else fails you will have to drill the head of the bolt off.You may have to grind or modify the tip to get it to fit tight. Catch the edge of the head with chisel and hammer the head counter clockwise. As an alternative use a sharp chisel and hammer.If the damaged bolt is out in the open try grabbing the head with a pair of vise grips to loosen it.Rather, use a quick snap or jerk of the wrench to break the bolt looseĬURE: If it still happens here are some options for bolt removal.This can actually increase the chance of rounding out the head. Don't use a slow turning motion with the wrench.This shock treatment helps to slightly loosen the grip of the bolt head to the surface.Try to HIT the head of the bolt with a hammer and punch before attempting removal.The wrench must fit tightly all the way down into the head of the bolt.Use a pick or small screw driver to clean out debris. Always thoroughly clean down inside the hex head hole.PREVENTION: Here is a list of things you should do to prevent rounding out a hex head bolt ![]() If you don't know how to deal with this, a small job can turn into a huge headache! Here are some tips to help you prevent the problem in the first place and on how to deal with it, should it happen. It always seems like the wrenches are just not tight enough. The problem usually comes from rounding out the hex head with the Allen wrench. ![]()
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