Just put a 6pt socket on it with a 1/2" drive ratchet get a big hammer or chunk of wood and smack the ratchet or breaker bar. Poor mans impact.
SOMEBODY REMEMBERED!!!!!!!!
:woo-hoo:
but that's not quite the correct way.
ONLY WORKS IF YOU HAVE ENOUGH ROOM, like on an engine stand. very difficult to do under a car.
use a good fitting 3/4 or 19mm boxed end wrench (only .002" difference). place the wrench on the bolt head, extending to the left. use something to pre-tension the wrench, works best if its not just flopping around loose. TIE A SHORT ROPE TO THE WRENCH, so it can't fly more than a foot or so. it helps to have an assistant hold a broom handle or other piece of wood against the head of the wrench so it won't fly off. a 2 foot or so long chunk of 2x4 works great, give the wrench a home run smack a couple of times. get a square hit on the wrench, no angles or glancing blows allowed. they pop the wrench off the bolt. wood works better because 1, its soft and won't break things 2, it has enough mass that force is exerted for the time it takes to put a dent in the wood. 3, won't break as many things if it's is angrily flung across the garage.
wrenches work better than sockets 'n ratchets because the rotational force is applied directly to the bolt head, none of those nasty vector forces that apply if force has to go around a 90 degree bend and thru a junction in the tools.
the striking is so short in duration that you don't worry about tipping the whole engine stand over.
have fun.
I see you already have it out, gave me a chance to 'splain the "poor mans impact" again
Perry