The crankpin should be at the top when the ram is coming forward over the table. This gives the slow forward on the cutting stroke and quick return.

John

The crankpin should be at the top when the ram is coming forward over the table

This is critical with a shaper, the forward power stroke MUST be when the crankpin is at the top

There's too much stress if its the wrong way round

The easy way to tell is the power stroke is the slow stroke movement and the return stroke is the fast stroke movement

It works that way because of the geometrics of the drive system

Hello Chubbs,

If the shaper is intact and only the motor a failure then there should be no need to worry over the way the ram is connected to the crank etc, that is all internal and not affected at all by a dead motor.

What I would recommend though when you have your new motor attached is to pull the drive belting over by hand to check out everything for free movement BEFORE you apply power

Enjoy your new toy

Brian