Question about Black & Decker 3 x 21 In. Dragster Belt Sander
Just finished the exact thing, so here's the read deal:
- The screws on the drive roller ARE reverse thread.
- My old roller got too hot and separated from it's metal core, leaving the core tightly screwed onto the drive shaft. If you can unscrew it off of there (unscrew = clockwise!), just screw the new one back on. If not, you are going to have to take the sucker apart, but it's not too bad if you follow this, now that I did it the hard way:
-- You need to remove the belt plate assembly. It's only 4 screws: an obvious one recessed between the drive roller and the red belt-tensioner lever (see picture, white arrow), then two on the other side next to the black belt straightener knob (see 2nd picture, black arrows), right next to each other. Finally, you have to unscrew the black belt straightener knob (2nd picture, red arrow) all the way out so it will release the belt holding plate assembly, which should then slide out.
From here, you can hold the drive shaft firmly while you reverse-thread unscrew the old drive roller (or it's remaining pieces) and put on the new one. I had to cut mine off with a Dremmel tool it was on there so tight!). BE CAREFUL NOT TO DAMAGE THE COG THREADS ON THE DRIVE SHAFT; hold it with slip-lock pliers and a heavy rag or something to prevent damage.
Posted on Feb 06, 2016
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Posted on Jan 02, 2017
looked at a schematic and the drive roller screws onto the drive shaft, I don't see where is a locknut on the outside but the shaft is threaded, it moght be left hand thread. If there are 2 holes in the gear see if you can find a spanner wrench from a grinder and secure the roller and loosen the gear.
Posted on Sep 12, 2010
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