Question about Bosch 1274DVS 3" x 21" Belt Sander

1 Answer

Craftsman 315.117150. The belt keeps sliding off, as soon as turned on and start to sand. It seems to be on correctly.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 396 Answers

You need to adjust the tracking knob which is by the front handle that looks like a triangle head screw. Make sure the belt tension leaver is tight and the belt has enough tension on it. Quickly press and release the start switch and note the centering of the belt. It should be in the center of the bottom platen. If it is not, adjust the tracking knob and bump the switch again. If the belt is going in the wrong direction turn the knob the other direction. Once you are close the center of the platen, press the power switch to turn the unit on and lock the trigger. Firmly hold the unit vertically from the front handle. Fine adjust the tension knob to center the belt and make sure the belt is not hitting the case which will cause damage. You should be able to use the belt sander without the belt slipping off. Let the sander do the work, do not push down and limit the side to side motion. If the belt will not stay on then the belt is too large or the torsion spring needs to be adjusted to applying more tension on the belt and drive roller.

Posted on Mar 22, 2011

Testimonial: "terrific, thanks! "

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do I get the wheels to pop back out after changing the sanding belt on my old craftsman belt sander #31511720 model?


The tracking adjuster will tilt one wheel in so's you can start putting the belt on. After it gets about halfway, you will need to adjust that the other way and just bump the switch a bit a few times as you adjust and it'll work its way back on.
25397009-i35miyjvqfxvsqmcau3fg5p2-4-0.jpg

Feb 03, 2015 | Craftsman 3 x 21 in. Belt Sander, 8 amp

1 Answer

My Craftsman riding lawn mower LT2000 (2002/2003) stopped moving. The drive belt seems to be loose. The engine starts and cutting blade engages fine. Was working fine but stopped working when it started...


there should be a drive belt tensioner somewhere on the belt, it usually works off the clutch/brake, when you push on the brake it apply's the brake and also takes the tension off the belt to stop it from moving.
Not sure of your ride on mower but that is how my ride on mower works so I hope this helps.

May 19, 2014 | Craftsman Garden

2 Answers

Why does my deck belt come off?


check the alignment of the pulleys for that belt check that the correct v section belt is in use

Jun 12, 2017 | Garden

1 Answer

The sandpaper keeps sliding off the sander everytime I turn it on. Even when I turn the dial it to tighten it or move it over it keeps on sliding off.


You need to turn the dial slowly. If the belt starts to come off turn the knob in the other direction,slowly until the belt is centered. Doing it slow is the trick.

Jun 04, 2011 | Black & Decker 3 x 21 In. Dragster Belt...

1 Answer

Hi, my drive belt keeps coming off as soon as it starts to spin. I have tried to replace it and make sure the tension is correct but it doesn't seem to sit on the middle of the drum, it does seem to sit in...


If the belt is installed so that it turns in the wrong direction, or goes over the pulleys in the wrong order it will just flop off; much like a vacuum cleaner belt. Double check that you have routed the belt correctly.

Feb 18, 2011 | Hotpoint Aquarius WF220 Front Load Washer

1 Answer

I have a 3x21 inch craftsman belt sander. It's about 12 years old. With the sand paper belt is mounted and tightened and I start to sand something the belt will slip and not sand. I checked the tightening...


The drive and guide rollers are probably drying out and won't grab the paper. Take the drive roller of and treat it with a rubber restoring compund. The roller should not come off easily.

Jul 29, 2010 | Garden

2 Answers

The Belt of my craftsman 3x21 sander slowly moves off track.


There is a leveling (screw/knob) on the side of the belt sander. Turn it up and the belt will drift in one direction. Turn it downward and the belt will drift in the opposite direction. play with this leveling screw/knob until you reach a good balance and the belt will stop drifting.

Dec 04, 2009 | Craftsman 3 x 21" Variable Speed Belt...

1 Answer

Installing belt on sander


Remove table assembly.
Remove pointer and then slide cover up and out from dust reflector.
Release belt tension by pushing tension lever toward idler drums.
Note: there may be an arrow on the inside of the belt.
The arrow should point in the direction of belt travel to ensure that the splice in the belt will not come apart.
Slide new belt over the drive and idler drums; center belt on drums.
Push tension lever towards drive drum to tension belt.
Hope this helps.

Oct 04, 2009 | Tools & Hardware - Others

1 Answer

Sandpaper sliding off


there isnt enough tension on the belt, hence the side to side movement. keep tightening the spring until it stops

Jul 22, 2009 | Tools & Hardware - Others

2 Answers

BELT SANDER ADJUSTMENT


Try removing the adjustment screws and applying some Teflon thread sealant. That should prevent the screws from turning on their own. Another thing you can do it check the pulleys with calipers and make sure it is still cylindrical. I have seen ones that become worn on one side. Finally, roughly check the belt tension on both sides and make sure they are approximately the same tension.

Good Luck!

Ben Steigerwald

Jan 11, 2009 | Tools & Hardware - Others

Not finding what you are looking for?
Bosch 1274DVS 3" x 21" Belt Sander Logo

1,096 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bosch Tools & Hardware - Others Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Tom Chichester

Level 3 Expert

34100 Answers

Are you a Bosch Tool and Hardware - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...