Drum does not spin in Bosch washing machine

The washing machine, having filled the tank with water, stopped dead in its tracks? This means one thing, you need to urgently look for the reason why the drum is not spinning. It is not at all necessary to call a specialist for this; you can try to figure out the problem yourself, and we will tell you where to look for the problem and what to do.

Description of the breakdown, possible causes

Let's define this breakdown more precisely in order to limit the range of possible faults. In this article, we will keep in mind those cases when the washing machine, having filled with water, does not start washing, the drum does not spin. In this case, the pump drains water and operates normally. But if you listen closely, you can hear a sound similar to a crack. This is the sound of a motor that either rotates and does not transfer the rotation to the drum, or does not rotate at all.

The reasons for this may be the following:

• the drive belt has fallen off the pulley or broken;
• the brushes and lamellas of the engine are worn out;
• tachometer or engine burnt out;
• a foreign object has entered the drum and has jammed the rotation of the drum.

Important! In cases where the drum spins, but poorly, there may be more reasons.

Engine problems

The drum in a Bosch brand washing machine may stop rotating if the motor does not turn it. Everything seems logical, but in practice you still need to understand what happened to the engine itself and why it does not turn the drum. It is very important to find out whether the engine does not turn under load or not at all.. If the engine is running and rotates the shaft, but as soon as you attach the belt to it, it stops rotating it, then the problem is in the brushes and you need to change them. What are we doing?

1. We remove the service hatch of the Bosch car, which is located at the rear.
2. Remove the drive belt.
3. Disconnect the wires from the engine.
4. Unscrew the mounting bolts and remove the motor.
5. We check how the motor shaft rotates, then unscrew the small bolts holding the brushes.
6. We take out and check the brushes.
7. If they are worn out, then we replace them; if the brushes are intact, we continue to look for the cause.

Motor brushes are not replaced one at a time. Either they should not be changed at all if they are intact, or replaced in pairs at once.

If the brushes are intact, it means that the drum of the Bosch washing machine does not spin for another reason; it is very likely that the tachometer, which is attached to the motor housing, is to blame. This is the same element from which you previously removed the wires when you dismantled the motor.

We take a multimeter, set it to check resistance and check the tachometer. If the tachometer is working properly, we continue to look for the reason why the washing machine does not spin its own drum. At this stage, you will have to disassemble the engine housing and inspect the lamellas or, as they are also called, collector plates.

If the lamellas are intact and look as shown in the figure above, the motor winding may be broken. You can check this as follows:

• switch the multimeter to ohmmeter mode;
• We place one probe on one of the lamellas, and the second probe on the second;
• look at the display indicators (should show 0.1, 0.2, 0.3, 0.4 Ohm);
• we check the values ​​​​on all pairs of lamellas, if everything is normal everywhere, then the problem is not in the winding.

Replacing the drive belt

You can tell if the belt has broken in the washing machine by turning the drum by hand. If there is no resistance during rotation and the drum rotates easily, then the belt has either fallen off because it has stretched or has broken.

Replacing the drive belt in an automatic car is easy.To do this, remove the back of the case using a hex screwdriver. Then remove the drive belt by pulling it towards you with one hand and turning the pulley with the other. Now put the new belt on the engine pulley, and then on the drum pulley, turning the pulley with one hand. This job requires some skill, so don't despair if you don't get the belt on the first time, try again.

Important! A drive belt for a Bosch washing machine must be purchased using the serial number indicated on the belt itself.

Foreign objects

When the drum cannot be turned by hand when the washing machine is turned off, the reason for this is a foreign object caught between the tank and the drum of the washing machine. You can try to remove such an object from the tank through the hole under the heating element. Need to:

1. Unscrew the back cover, thereby providing access to the heating element.
2. Disconnect the terminals from the heating element.
3. Loosen the nut on the central bolt that holds the heating element in the socket.
4. Using loosening movements, pull the heating element towards you and move it to the side.
5. Look into the nest under the heating element using a flashlight.
6. If a foreign object is visible, try to get it out with something.
7. Reassemble the car in reverse order.

If you cannot get the item using the method described above, then all that remains is to disassemble the washing machine Bosch and remove the tank. Then remove the drum from the tank. Detailed instructions on this topic are in the article. How to disassemble a Bosch washing machine.

To avoid having to take something out of the machine, carefully check the pockets of your clothes before washing, don’t forget to look in the drum and powder tray, in case there is something there that shouldn’t be there.

So, almost all malfunctions that cause the drum to completely stop in a Bosch washing machine before washing can be eliminated independently. Except when you need to disassemble the tank. Such work requires skills, space for repairs and time. This kind of malfunction does not happen often. Happy renovation!

6 reader comments

1. 04/15/2017 at 18:53

   Valentine:

   Quite a detailed description. My machine fills with water and does not wash. Bosch Maxx WFH 1660 OE. I'll try changing the brushes

   Answer
2. 01/29/2018 at 21:36

   Rustem:

   Thanks for the tip about the belt. I pulled the typewriter out of the closet - the belt was under the typewriter. I put it back. Everything is working.

   Answer
3. 12/28/2018 at 20:57

   bear:

   But when I have little laundry, the drum spins, but when I have a lot, it doesn’t spin :)

   Answer
   • 04/30/2020 at 13:15

     Maksut:

     Brushes

     Answer
4. 06/23/2020 at 18:42

   Alexander:

   The engine is working, the tachometer is too, the belt is intact, there are no foreign objects, but it still doesn’t turn.

   Answer
   • 07/08/2020 at 21:14

     Sergey:

     Same thing... did you find the reason?

     Answer