The chosen piston were preferably around the 90* area of the stroke.
And the operator of the grease gun knew when to quit!
Problem is, a hand lever type grease gun is capable of 15,000 PSI! On a 3" bore cylinder, that equals to about 105,000 lbs of force, or 52 1/2 tons!
So, the potential for destruction is easy to see, bent rod, twisted/broken crank, broken/stretched main cap or bolts, crushed piston, split liner or block, snapped head bolts. Not sure which would give first...
Another factor, all of this force would be exerted on one cylinder. Were the engine being forcibly turned, at least the stuck cylinders would be sharing the force.
I still think, IMHO, if it cant be broken loose by soaking with oil, banging the starter, or prying on the flywheel, it's best to take it apart in the least destructive way possible.
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Today's Featured Article - Preventing Tractor Theft - by Staff. The discussion started with the following message: I have a JD A without key start or any locking device. Is there a best way to secure it so the chances of it being stolen are reduced? Following are some of the answers that were received: Take the rotor out of the distributor and hide after each use. The would-be thieves at least couldn't just get on and drive away.
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