Ok, I'm tearing down an engine and I can not get the bolt that holds the cam sproket off. I have tried just my socket wrench and my impact wrench and still no luck. How do I get this bolt off!? :cross-eye

Wedge the cam sprocket with a screw driver or socket extension against the cam guide. It's on there pretty tight, but it'll come free. Don't forget to mark where the cam chain goes on it, and how it's aligned to the camshaft (because that'll turn by the time you get it back on!), so that you can assemble it easily. Also!! Do not forget to wedge the cam chain in place so that it doesn't fall into the engine case, or you're looking for a really long weekend.

Good luck!

Chris

What I have done is to wedge a piece of soft wood between the cam gear and the side of the head to kinda lock the cam/chain/etc from turning. Put a 22mm (I think) socket with 1/2" breaker bar on the bolt, and whack the breaker bar with a 3 lb. sledge hammer. Has worked every time for me.

Of course you must use something to wedge the chain tensioner in place, as stated above.

I would think a 1/2" drive impact gun would work the best. Especially if it's really on there. A good one will put close to 250lbs of pressure on it.

My MAC is rated at 650lbs maxium forward torque and 725lbs maximum reverse torque, it takes almost anything off:devious: