Don't worry about the hum. It's from the transformer in the top right of the box. It's normal for this thing to hum.
That's an incredible deal for what you paid, even for main land pricing.
Clean it up and put new bearings in both the motor and saw arbor.
Clean the centrifugal start switch and very thinly apply a light grease to the area of the motor shaft centrifugal weight collar slides.
Get a set of new matched belts from
www.ereplacementparts.com and install them with their numbers in sequence, either way left-right or right-left.
Clean the top to bare metal using a ROS and Scotch Brite pads and wax it several coats with Johnson's Paste Wax. If you end up removing the table, there are washers (or should be) between the cabinet and top. Make certain to note the location for each group and put them back when replacing the top. These are shims to get the top perfectly flat. Also, without them, you will not be able to lower a 10" saw blade completely below the top surface of the saw. They and their positions are very important.
Align the top to get the miter slots parallel with the blade as closely as possible. There are special dial gage fixtures for this.
Install the side table and fence. Did you get a miter gauge? Install it too.
There are molded plastic motor covers available through Amazon and online that do a pretty good job of enclosing the motor opening and reducing the noise. Mine has a foam Weather strip around the edge that seals against the saw cabinet well. Mine also has slots to hold the miter gauge bars when the miter gauge is not in use. Mine has 2 of these slots and I have 2 miter gauges, so this works well.
For dust collection, most Unisaws have a plate on the back side of the bottom black frame and Delta once offered an adapter for this. You will likely need to make one now. For good results, sloping a bottom board toward this adapter helps considerably. Plugging some of the holes in the underside of the table casting to base helps create more flow past the blade.
I make my own zero clearance inserts, usually from 12 mm (1/2") Baltic Birch or Corian by copying the edge profile of the metal Delta insert.
I added a Wixey DRO and an additional Wixey extrusion with PC strip to my saw many years ago when Wixey first came out with them. Going digital significantly increased my work accuracy. I can help with photos, etc. when you get far enough to do this.
My Unisaw was a little less rusty, but in not much better condition when I bought it almost 20 years ago, and I paid about 2X for it. You got a great deal. Send a PM if I can help further.
Charley
wiki.vintagemachinery.org
