Question about Bosch Mx25ec-21 2.5-Amp Multi-X Oscillating Tool Kit

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Bosch MX25E Mullti-tool doesn't oscillate

Tool holder spins; doesn't oscillate. Motor works fine, but head doesn't oscillate.

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  • Trimtone Aug 18, 2013

    The gear box pin is sheered in half. It is a $45.00 part.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 142 Answers

SOURCE: Bosch demolition hammer oozing grease/oil.

Look around there for some O rings we have had this same problem with some of our Bosch hammer drills, and they usually replace a set of seals around the nose of the tool

Posted on Jul 06, 2009

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brewerstool
  • 141 Answers

SOURCE: I have a Bosch brute jackhammer, I need the tool

You can use an adjustable face spanner wrench to remove that cap. I don't remember the pin size but you can measure the holes and get the appropriate size. You can remove the whole plate with the armature by undoing the 4 cap screws. Prior to removing the motor plate you have to remove the handle plate from the axle that goes through the body. Undo the nut that holds the assembly on and slide it off. You can now remove the Armature plate. After removing the cap screws pull the assembly out about 1-2 inches. You will see the wires that go to the field attached to the brush holders. Remove the screw that holds these wires to the brush holders. You can then safely remove the whole assembly. This also makes it easier to remove that cap plug with the spanner wrench, because you can now put the whole assembly in a vise. I always heat around the cap with a torch before doing anything. Then I tap on the plug with a hammer a couple of times and voila it turns alot easier. Corrosion almost always builds up on this cap because of the different metals. (Steel and Aluminum respectfully)

Your hammer may have a broken connecting rod. To inspect this make sure you ping the cylider and body with marks so you line them up the same way. Then remove the 4 cap bolts that hold the cylinder to the body. Remove the cylinder and inspect the hammer cylinder and rod. If the connecting rod is not broken you will have to inspect the gears and pinions to make sure they are ok.

Posted on Sep 13, 2009

  • 50 Answers

SOURCE: bosch classixx 1000 express wont spin

Check the motor housing for an overload button, usually on the back and coloured black or red. Give it a push and if it clicks then the motor might have just been a bit stressed out and popped it.

Next two things are more serious unfortunately. The relay on the circuit board might have burnt contacts from switching the motor over the machines life, or, one of the motors windings has developed a fault. (these are both pretty rare though).

Posted on Jul 29, 2010

  • 4 Answers

SOURCE: I have a bosch 11240 and the tool holder will not

"CHUCK" is full of dust, clean with a good cleaner lubricant, white grease before using again

Posted on Nov 07, 2010

  • 10 Answers

SOURCE: I have a bosch hammer dirill that won't chip nor drill but motor run fine

Hi, have you tried the various positions on the front part of the gearbox behind the 'chuck'?
If so, then Im afraid it must go in for repair. These are not an easy fix and personally I would recommend you ask for a 'quotation' as it could be just something simple to do with the 'Gearbox' selector, but it could also be something a lot more serious within the Gearbox.
Good Luck & Best Wishes, John..

Posted on Jul 03, 2012

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Just disassembled one today, and it wasn't easy. There's a large washer with four tabs between the two assemblies. Insert a screwdriver into the space between it and the gear box, so you're prying metal to metal, and pry for all you're worth, moving from one tab to another. It'll eventually pop loose, and leave a few marks.... One of the two ears on the rocker is broken, so it'll mean a new gearbox for me.

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1 Answer

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1 Answer

Bosch demolition hammer oozing grease/oil.


Look around there for some O rings we have had this same problem with some of our Bosch hammer drills, and they usually replace a set of seals around the nose of the tool

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