20 Most Recent Dremel Variable - Speed Multipro Rotary Tool 395 - Page 5 Questions & Answers

Try at eReplacementParts.com : Power Tool Parts and Tool Repair Diagrams.

If you need more help come back.

Post / thumbs / testimonial are welcome!

Try at eReplacementParts.com : Power Tool Parts and Tool Repair Diagrams.

If you need more help come back.Post / thumbs / testimonial are welcome!

I beleive you will find a broken connection at the field coil. The connectors for the coil break as well as the coil wire close to the connectors. You can try to repair the coil yourself or replace it (# 2615302206 Field, 120v

You described intermitten pwer supply, follow this procedure:

1. check your power cord for breaks or kinks, especially where it join the piece or plug
2. if cord is ok, check/replace brushes.

To check/replace brushes on dremel 395 follow this procedure:

1. switch off unit, remove power cord.
2. with flat screwdriver remove gently brush covers, WATCH FOR LITTLE SPRINGS!!!
3. check brushes for wear, springs if connect correctly, if brushes are thinner than 3.2mm (1/8") replace with new ones, this check should be carried regardless after about 50hrs of use, brushes last about 50 to 60hrs in normal use.

In unlikely case that it is switch, this is as well very easy replaceable.

1. switch off unit
2. remove cable from power source
3. remove brushes following previous procedure
4. remove collar from front of the piece
5. remove side screws and gently pry apart halves, label side up
6. replace switch
7. screw pieces back in reverse order
8. replace back brushes.

All parts are easy available, when purchase brushes or switch, be aware that they fit only particular model!

I would recommend clean table with butcher paper on top, torx/hex screwdriver, philips screwdriver, flat screwdriver - these vary from country to country, I cannot provide what exactly tools you will need, you need to check what screws are holding your piece together, little long nose pliers can be helpful as well.

As you pull handpiece apart put your parts in order in whihc you pulled them apart, when you put them back, it will be easy to put them back in reverse order in which them come apart. For changing brushes you need about 5min (assign 15min), for changing switch or faulty power cord you need about 1h (assign 3hrs), assigned time is theoretical, prctically multiply it by 3...

If you have anymore questions, or require more detailed instructions, do not hesitate to follow this thread and leave note.

Leave note how it go, thanx!

I'm guessing, but I think that the Sears tool uses the same flexible coupling. If you go to www.searspartsdirect.com and put in the model 572610031, you can look at the diagram and decide for yourself. I think the part costs $2.57. If it's the right one, I'd order two or three for the future.
Hope this helps.

The switch is defective or the brushes.But replace both.Try at eReplacementParts.com : Power Tool Parts and Tool Repair Diagrams.

If you need more help come back.Post / thumbs / testimonial are welcome!

The USUAL cause of these variable speed tools to not run is failure of the Triac semiconductor that controls the power to the motor. One needs to test the continuity of the motor and if that is good replace the failed semiconductor. They use a sensitive gate version and one needs to replace with exact part.

Unfortunatly Dremel who is owned by Bosch has discontinued that tool and parts are no longer available.

OK... You have done enough troubleshooting to give you some ideas to look at.

FLAT SPOTS: No !!! That just doesn't happen. If a winding or segment goes bad then you can tell this by having it in the failed mode and rotating it a small amount. If it runs, then MAYBE you have bad winding or segment. USUALLY this is accompanied by a lot of arcing at the commutator.

I have seen a LOT of these small motors have bad connections of the wires to the brush holders. Often these are clips that seem to get marginal. Since pressure there seems to affect it a bit, look to that possibility FIRST.

If this unit has a speed control, those can be a chronic failure.

Please note that the comutator and armature is a complete unit. You cannot just rplace the commutator.

you can go to Dremel.com and they have a toll free number for assistance or they can furnish a downloadable schematic for this tool. so you can find the cupling

One of my dremels shorted out because some grinding got into the housing. You may also want to check the brushes if you have used it a lot.

press and hold the small silver button near the front/end of the tool. This keeps the chuck/motor from moving. Use your wrench to then open the chuck and insert your desired bit. Tighten while still holding the button.

You'll be hard pressed to find parts...
you can try Dremel Directly http://www.dremel.com/Pages/default.aspx
hope they can get you what you need!

The problem lies with the speed switch,if the brushes are bad the motor will never run at any speed.

I had the same problem - couldn't get the part (plastic coupler between the spline drive shafts). I purchased a waterproof **** Splice (GB-AMT-5126 12-10 gauge -- used for electrical wire splicing -- got it at Home Depot). Clipped off about 3/8" on each end with diagonal cutters and attached it to the shafts. The steel ring in the middle of the **** Splice connector provides good structural support to the connection. Works like a charm. Plus with a pack of 4 connectors, I have 3 in reserve.

it failed. there is no rhyme or reason. Even a new anything can break at anytime. If it doesnt turn on after it cooled down no use fixing it.

I would think that just the brushes, they should slide freely in the slot. check also the condition of the armature for arcing or raised commutator bars.