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Old 06-19-2002, 07:48 PM
Registered User
Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
Stuck bolt

I am trying to remove the crankshaft bolt on an M103 engine without any luck. I don't physically know how to put anymore force on it and im worried about breaking something else. The engine is completely torn down except for the crankshaft. The bolt I can't remove is on the front of the crank. Any tips on removing it?
George Carstens
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Old 06-19-2002, 08:09 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
They put more than 250ft/lbs on this bolt. We use a factory crankshaft holding tool to do this. You may try borrowing a 3/4 drive impact to remove it.
Donnie Drummonds
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Old 06-19-2002, 09:02 PM
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Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
Thanks for your help....I think ill let my buddies at the machine shop tackle this one.
George Carstens
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Old 06-20-2002, 11:05 AM
csnow's Avatar
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Join Date: May 2002
Location: Mass
Posts: 1,127
You can place a block of wood between the crank and the engine block to stop the rotation, then use a big breaker bar with a pipe on it.

This method has never failed me.

Obviously, the socket and breaker bar have to be up to the task.
A number of sockets haved failed this particular test...

I have personally had no luck with pneumatic tools here, and wonder about the 'beating' that the percussion places on the rod bearings (if they are still in place)...
1986 300E 5-Speed 240k mi.
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