i am having problems with an old koenig 100. the bolt securing the drive shaft to the winch came off and the small shim which pits into the winch input shaft was lost (Alan bolt). I made a new shim out of old spring and it fits perfectly, however the 3/8 inset hex head bolt is not providing enough pressure and the winch still fails under a heavy load. I tried drilling a bit into that shim and also ground the bolt to fit into the depression and got a fair pull before the winch again failed. the rotation is starting to score the input shaft.
I appreciate any ideas....any one ever just drill through the input shaft so the securing bolt fully penetrates the drive shaft.? I am amazed with the strength of the winch when operating normally and it is crazy that there is only a pressure hold and not a bolt all the way through the shaft....thanks for any ideas....