Replies

1. 
   RickL | Apr 18, 2007 07:14pm | #1

   Grease is not recommended for the racks and trunnions as it collects dust.  Some grease in the hole where the cranks go through is the most you need. Dry lube only for the rest or nothing.  Something is bent perhaps to cause binding. There will always be some backlash in the height adjuster. I recall there is a cam underneath for the angle. It's been a few years since I was more active as a tech for a Delta dealer. Unisaws are pretty basic. Taking the top off you can see what's going on easier.

1. 
   pieper43 | Apr 18, 2007 09:08pm | #2

   Thanks for the reply. I miss-spoke when I said grease, I used white lightning and graphite powder which was recommended. I had the top off and it didn't look like anyhting was bent. The play in the wheel is disturbing and it cranks easier at some points than others
   Thanks

1. 
   MikeHennessy | Apr 18, 2007 09:15pm | #3

   You can sometimes get sawdust caked in the works pretty deeply, causing things to bind up. You may need to take the thing apart and give it a good cleaning. Whatever you do, don't force it.

   Mike HennessyPittsburgh, PA

2. 
   [email protected] | Apr 18, 2007 09:55pm | #4

   At the back end of the elevation shaft are two nuts, they set the backlash. 

   I'm not sure how to adjust the lash on the tilt, but there is a bolt and "special washer", that attach the guide block.  I'm guessing that tightening that bolt will decrease backlash. 

   Did you lubricate the bushings on the adjustment shafts?

   Not to be a jerk, but;  have you released the little motion locking knobs, in the center of the big ones?

   I recommend opening it up, so you can get at things, and shooting a couple cans of brake cleaner on the mechanisms as you move them through their range, and making sure things are clean, and then lubricating anywhere you saw two pieces touching that moved relative to each other.   

   For lubrication I am now using, "Dupont Teflon multi-use dry wax lubricant", it is just like the long name says, a dry wax lubricant with Teflon, that comes in a spray can.  It penetrates well, and dries to a thin white waxy film, that does not attract sawdust.  Lowers has/had it for $4.99 a can.  A can lasts a long time when your lubricating shop equipment.  An alternative source is bicycle and motorcycle shops, as it is an excellent chain lube.  

   Since things are stiff, remember to always adjust in the direction that increases the load on the mechanism, (i.e. raise the blade as opposed to lowering it), so that as things vibrate they have less chance of moving.