Quote:
Originally Posted by Hugh R
When I pulled my engine, I wrapped the nut in a piece of old leather and then used a pipe wrench, no marks.
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this works fine as long as they aren't corroded on there
if they are hard to remove, then you may need to use some shock (hammer) the the wrench to get it free; leather or tape will prevent that mechanical shock from reaching the nut threads
other options include heat, cold, liquid penetrant