Replies

1. 
   SawdustSteve | Jan 29, 2010 06:00pm | #1

   Belts slip and belts stretch. That is a fact of life. I'm not familiar with your particular DP, but check to see if there is an adjustment for sliding the motor back, about 1/4 to 1/2 inch or more. This will tighten up on the belts and should take care of the problem. If you have 'variable size' pulleys, have you maintained them?? There's usually a 'zerk' (grease) fitting on them and they do need a shot opf grease periodically.

   SawdustSteve Long Island, NY (E of NYC)

1. 
   LakelandDave | Jan 30, 2010 12:26pm | #2

   Thanks Steve, Your comment was a good one. There appears to be an adjustment to the motor mount - although only about 3/16". There might be more adjustment, depending on how deep the threaded stud goes into the cast housing. As is, this is the arrangement of the four mounting studs - starting with the housing. First a 'sleeve nut' tight against the housing - then, tight against the sleeve nut is a regular hex nut - washer - motor mounting plate - washer - lock washer - regular hex nut. Beyond the final hex nut is the 3/16" I mentioned. I would have assumed that the threaded stud extended from it's exposed outer end all the way through the assembly of nuts and washers - and on into the housing. From looking at the parts booklet, though, it appears that's not the case. A single part called a "stud" seems to be comprised of a single piece that has the short threaded 'stud' at one end of the sleeve nut, and a round (apparently unthreaded round part at the other end that goes into the housing. If that's the case, then I will be limited to 3/16" maximum adjustment - and that might be enough. I'll wait to see if I get any other thoughts before experimenting. The variable pulleys have been maintained.

   Thanks again!

1. 
   SawdustSteve | Jan 30, 2010 10:05pm | #3

   Dave... I tried to look at the parts list on the Delta site. It's less than useless. The motor is usually mounted on a steel plate. From the plate there are two rods which extend (slide) into the main body casting, These two rods (about .75diam) are used to adjust the belt tension. There should be a set screw (may be square head screws) on each side of the casting. Loosen up these two screws and use a hefty screwdriver or tire iron to pry the motor mount plate back. This will tighten up the belts. You should be able to do this by yourself, but having an extra set of hands may come in handy.

   SawdustSteve (where it never got above 18 degrees F today)

1. 
   LakelandDave | Feb 03, 2010 10:23am | #5

   Steve - Since you went to such an effort to help, I wanted you to know that I've found the problem. Delta suggested the problem might be with a sheared nylon rod in the center pulley assemblies. That meant taking that assembly apart - aggravated by snap-rings and strong springs. The nylon rod was OK, but I found that the Delta parts diagram shows as one single item an assembly of two castings (the lower part of an upper pulley and an upper part of a lower pulley) that are joined by a set screw passing through both hubs and seating against the nylon rod. That screw had backed completely out of the inside hub, allowing the upper part of the lower pulley to rotate.

   I just hope I can get it back together again! Thanks for your help.

2. 
   LakelandDave | Feb 03, 2010 10:22am | #4

   Steve - Since you went to such an effort to help, I wanted you to know that I've found the problem. Delta suggested the problem might be with a sheared nylon rod in the center pulley assemblies. That meant taking that assembly apart - aggravated by snap-rings and strong springs. The nylon rod was OK, but I found that the Delta parts diagram shows as one single item an assembly of two castings (the lower part of an upper pulley and an upper part of a lower pulley) that are joined by a set screw passing through both hubs and seating against the nylon rod. That screw had backed completely out of the inside hub, allowing the upper part of the lower pulley to rotate.

   I just hope I can get it back together again! Thanks for your help.

3. 
   brownman | Feb 08, 2010 01:46am | #6

   Dave,
   If I'm not mistaken I
   Dave,

   If I'm not mistaken I believe that Delta had a lot of problems with this model and actually stopped manufacturing it, so they could work on a solution. This is what I was told by the staff at the Rockler Woodworking Store. They even had some in their store that they were told, by Delta reps, not to sell because of problems they had discovered.You might want to press the big wigs at Delta on this issue, to see if you can return it for a replacement. From all I've heard it sounds like there should have been a recall on this model.