Docwheelhorse 2,740 #1 Posted January 29, 2012 Hello All, A couple years back I got a crusty 312A to run for a friend of mine.... well since then he has cleaned it up and thrown some paint on it and has fallen in love with it. Back when I got it running the head gasket was blown and leaking but the tractor ran fine..... I went to change the gasket but when I stuck a ratchet on it the bolts would not loosen and gave that "springy" not so good feeling that a bolt gives just before it snaps and makes your day.... well I told my friend to run it as-is and that we would deal with it at some point. The gasket is getting worse and worse and I figure it won't be long before theres no gasket, no compression and no run...... so is there any tricks to getting the bolts to loosen or am I going to snap them off and deal with drilling etc..... something I really really really don't want to deal with. I'm just stumped as I have never had a head bolt frozen in a block EVER..... Tony Share this post Link to post Share on other sites
Kelly 1,033 #2 Posted January 29, 2012 Is it one you can warm with a torch? even the block around it some, some bolts the tips stick out the bottom look to see if it is one of those. Share this post Link to post Share on other sites
dobeleo 7 #3 Posted January 29, 2012 When I rebuilt my K301, I broke an exhaust manifold bolt. Drilling and using an easy-out wasnt that bad. Dont forget to chase the threads when you get it apart. All I could recomend is MAP Gas and heat it up. Dan Muren Shorewood, IL Share this post Link to post Share on other sites
TT-(Moderator) 1,162 #4 Posted January 29, 2012 After spraying liberal amounts of penetrant around the bolts, a piece of steel held on the bolt head and hit sharply a few times with a hammer is a good start. A blunt tip on an air chisel held straight down on the bolt head is good too. If you are absolutely certain that the bolts are going to twist off, drill the heads off and remove the cylinder head. Use a torch to heat the remains of each bolt, but try not to get too much heat on the deck surface of the block. As the bolt cools, stick a candle against it where it enters the block so the wax melts and flows into the threaded hole. (hopefully) Give it a few more raps on the end with a hammer as it cools a little more. Clamp the locking pliers to it, cross everything you have two of, and proceed to turn it out of the block. I think it's much easier to do it this way than to drill out broken bolts - unless you have a good drill press or a milling machine. Share this post Link to post Share on other sites
Docwheelhorse 2,740 #5 Posted January 30, 2012 Thanks for the replies.... I like the rap it with a hammer/vibrate it with an air chisel idea.... I will try everything thats been suggested and pray. Tony Share this post Link to post Share on other sites
can whlvr 994 #6 Posted January 31, 2012 i was taught that easy outs arnt for frozen bolts,if a bolt breaks drill and tap it,but if an easy out breaks and they do,its really hard to drill them out,easy outs are for things that have been apart recently Share this post Link to post Share on other sites
