Topher Posted February 24 Report Share Posted February 24 I have a Bosch 3283DVS random orbit sander that has received light use for many years. Suddenly today the head (or whatever it's called) got very wobbly. I pulled off the sandpaper and found that the screw holding on the head was backed out. I re-tightened it. Upon using the sander again, within two seconds the head again started wobbling. This time I removed the head and examined where the head mounts to the, um, whatever you would call it. Eccentric plate? I saw that there were three protrusions on that plate, and three holes in the head. Oops, OK, I need to line those up. I carefully lined them up and re-tightened the screw. But no joy, it immediately came loose once again upon starting back up. There is a lock washer on the screw. It looks OK, but I guess I could replace it. I could try thread lock, but there's no evidence of any there now. Any suggestions? Am I missing something here? And how long does it take thread lock to harden up? I need to get on with this work :-) Quote Link to comment Share on other sites More sharing options...
Jronman Posted February 25 Report Share Posted February 25 I wish I could help. I have had some decent use with either that model of Bosch or a similar model when I used to work construction. I had no issues with the pad coming loose. Is there a torque spec for the screw? Maybe a specific torque spec could help. I don't have any other ideas at the moment since you mentioned there was no sign of thread locker. Quote Link to comment Share on other sites More sharing options...
Topher Posted February 27 Author Report Share Posted February 27 Being pressed for time, I went ahead with thread locker. It got to set up for about four hours while I did other things. The sander then worked for several hours after that before I completed my task. Quote Link to comment Share on other sites More sharing options...
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