I have a Bosch 1274dvs belt sander that needs a new drive pulley. I have stripped it down to the chassis and drive pulley but cant figure out how to best remove the drive pulley nut or gear that is holding the assembly together. I am open for suggestions.
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Re: drive pulley removal
here is a parts breakdown. in center of picture is name of website where you can get a download. I cannot figure out if you are removing # 831 or 835 pulley. Either way its righty loosey on nut and you will have to hold opposite end to loosen.
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To replace drive belt on Bosch 7 PBS belt sander remove cover, 3 screws, place new drive belt over splined drive pulley. Feed belt clockwise over paper pully and Utilize welded hexigonal with suitable wrench to turn and 'pop' the belt on.
Remove the dust bag and unplug sander for now. Everywhere you see an access hole (fan area, dust port, back of sander blow thru the tool to remove lodged dust that clogged the system, Also look for broken belt pieces in the back of sander. Then while running (remove belt) blow again thru all the ports to try and reomve as much contamination as possible. When finished you can feel to see if air coming from dust bag port, it not you still have a clog that might need more work. If I have clarified your request would you please rate this response accordingly and thank you.
If I am correct, when holding the tool in the normal operating position there should be an oblong cover on teh left hand side nea the back of the tool. It should be held on with a screw. remove this cover and you can access the belt . MAKE SURE THE TOOL IS UNPLUGGED. the belt should pull off/push on with a bit of force. Turning the pulleys as you put it on will help it go on evenly. If it is too stiff, put the belt in some boiling water for a minute or two to soften it up a bit.