20 Most Recent Bosch 3107DVS Electric Sanders & Polishers Questions & Answers

Drawing REF: http://www.ereplacementparts.com/bosch-3107dvs-0603310639-random-orbit-sander-parts-c-128_1044_1230.htmlTo remove the Dust Fan/Coupling Assy. I did the following: I disassembled the plastic housing, removed the Backing Pad Pos. 733 and Dampening Ring Pos. 51.It seems the Star Washer Pos. 29 holds Bearing Pos. 30. onto the armature shaft and the Coupling Pos. 27 seems to be stuck in Bearing Pos.29. I used a 30mm long M7 hex-head bolt and 11mm ratchet turning clockwise (std RH thread) to pull the Coupling and Star Washer off. Luckily, there was enough thread left in the coupling to do this gear-pulling action with the longer bolt. To remove the rest of the Fan Assembly I removed the 2 screws Pos. 43 holding the Brush Holder Assembly, Noted the position and removed the Spring Clip Pos. 32, then removed the Armature w/ Fan and Dust Fan/Coupling Assemblies. Firmly gripping the armature I was able to remove the Dust Fan from the armature by turning it clockwise (LH Thread).Now that I have removed the parts and believe I will be able to reassemble them, I have ordered a new Dust Fan/Coupling Assembly.I hope this helps someone else having a similar problem.

If you are replacing the fan assembly because the internal thread that holds the rubber/velcro pad has stripped, there might be an alternative.I had the same problem with my PEX 12AE, which I believe is a similar sander. I found that the hole is threaded a good bit deeper than the screw, so I got a longer screw and so far it's holding ok. If/when that fails, I might try repairing the thread with an insert.Curious to know how you managed with your sander.

Some pads come with a new screw that has loc-tite on them. If you used the old screw when you put the new pad on, the loc-tite was probably dry and flaking off. Put a small drop of loc-tite on the threads, snug it down and let it sit over night and it won't come out anymore.

hold pad and turn the screw counter clockwise to loosen. Let me know if you need more assistance.

Use a quality adhesive backed sanding disk, and clean the pad area with isopropanol/alcohol. This should allow the adhesive disk to stick.
I recommend 3M adhesive disks.

You must replace the fan assembly. The part number is
2606610901

Hope this helps

http://www.bshappliancecare.com/Bosch/boschspares.html

part 32 copy and paste link https://www.ereplacementparts.com/bosch-3107dvs-0603310639-random-orbit-sander-parts-c-128_1044_1230.html

this site does not have or sell parts. Manufacturers do not red this looking for sales. Parts are available on line from many vendors.

All the other answers are wrong. You get a wrench with the sander. It's thin so it fits between the pad and sander to hold the nut in place while you unscrew the pad.

https://manuals.plus/bosch/pho-20-82-corded-compact-planer-manual#axzz7YG6vK5wp http://www.free-instruction-manuals.com/pdf/p3427802.pdf

1. Defective battery 2. Defective charger

There are a number of reasons why a belt sander will fail to track - Poor quality belts. Physical damage (dropped). Uneven wear of rubber drive roller. When one becomes troublesome it can take a deal of sorting. Best idea if there is no obvious reason is to start by trying an OE belt.

use contact adhesive