I have had this happen twice.
the engine has been stiff since reassembly from scratch, but has been all done by the book. Today I put on the newly balanced fan. moved the crank to TDC using fan blade, took the blades off to insert the dog bolt, and tightened that.
It got to 3.30 with the two old shims.
I reattached the blade assembly in proper alignment. and the crank will not turn. Period.
I could only think there was paint on the joint line of the fan hub, but loosening the dog and pulling back the fan assembly made no difference. It is about half off.( there was a little rotational play on the shaft when I started and that has gone too).very depressing to put it mildly.
any ideas. preferably ones that don't involver starting from scratch.?
the engine has been stiff since reassembly from scratch, but has been all done by the book. Today I put on the newly balanced fan. moved the crank to TDC using fan blade, took the blades off to insert the dog bolt, and tightened that.
It got to 3.30 with the two old shims.
I reattached the blade assembly in proper alignment. and the crank will not turn. Period.
I could only think there was paint on the joint line of the fan hub, but loosening the dog and pulling back the fan assembly made no difference. It is about half off.( there was a little rotational play on the shaft when I started and that has gone too).very depressing to put it mildly.
any ideas. preferably ones that don't involver starting from scratch.?