Well I figured out why my Mall Saw Model 70 is so loud. It uses a worm drive to redirect the power from the motor 90 degrees to the blade and also to slow down the speed to increase torque. So the worm drive is completely dry, no oil or lube at all, so it is screaming metal on metal. I found some small metal shavings inside the case, so a complete tear down is in progress.
This thing is made beautifully, precision machined, the far end of the blade shaft is supported by a very large outboard donut bearing.
Noted_WD.jpg
I am trying to figure out how to get that shaft out. Everything that can be undone is, and all the bolts and screws have been removed. Except for the bearing at one end and that square nut on the splined shaft on the other.
Noted_Shaft.jpg
Anyone have any ideas?
I will try to get more recent pics tomorrow.