"Paul Hovnanian P.E." wrote
> I'm in the process of pulling the drive plate off a vehicle to replace
> the rear main seal. In the process of loosening the 10 bolts, I managed
> to bugger up the heads on two of them. The socket I was using slipped
> off and rounded off a couple of shoulders on the bold head.
>
> When this happened, I stopped screwing with them in order to minimize
> further damage. There are several methods for removing such bolts. Prior
> to drilling and seriously messing around, I seem to recall some special
> damaged bolt sockets (with helical teeth in them). What are these
> called? Are they any good (the bolts are 14 mm, torque to 75 ft-lbs).
> Who would carry them in the Seattle area? Any tips when using these? Or
> other advice?
If the special sockets don't work, be happy that the bolts are so
exposed...
Grind a bit of a slot on the faces of the old bolts, near the edge, and
just deep
enough to give a chisel something to grab, then tap-tap-tap with a hammer
to
get them turning. Or, if you like the grinder's spark show, just keep
going until
the heads are completely gone. The plate will fall off, and the "stubs"
will come
out easily. Then get some new bolts, and a better socket.
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