How to change the pump in a Bosch washing machine?

How to change the pump in a Bosch washing machine What to do if your Bosch washing machine cannot drain water from the tank? There are two most likely reasons for this - a blockage formed in the system, or a breakdown of the pump. In both cases, you can repair the equipment yourself, without resorting to the help of specialists. We will figure out how to replace the drain pump of a Bosch washing machine and provide detailed instructions for repairing the equipment.

Let's make sure the part is broken

How to understand that it is the pump in the Bosch washing machine that has failed? You will have to observe the work of the “home assistant” and identify the main “symptoms” of her “illness”. Based on this information, a conclusion is drawn about the subject of the malfunction.

First, you should concentrate on the external signs of damage. Modern Bosch washing machines notify you of a system failure by displaying an error code on the display. Having deciphered the designation using the instructions for the device, it is easy to understand whether the reason for the “freezing” of the machine is the inoperability of the drainage system. The main sign of a breakdown of the drain pump is the “braking” of the washing cycle precisely at the stage of removing waste water from the tank.

Check whether the selected washing program has a spin option. If not, try running this function separately. Sometimes users accidentally select a mode that does not drain water, so the machine does not even think about emptying the tank.

Next, it is recommended to inspect the drain hose for kinks. The drainage hose should be at a level of 50-60 cm from the floor and positioned evenly. If it is not compressed anywhere, you should make sure that there is no blockage in the cavity of the tube.To do this, the element is disconnected from the sewer outlet and checked. At this stage, you can direct the free end of the hose into the bath and start the “Drain” mode on the machine.

If the water starts to drain, then the reason is a blockage in the house communications.

When it turns out that the drain hose is not clogged, you will have to check the garbage filter. It is located at the bottom of the Bosch washing machine. It is necessary to remove the protective panel or open a special hatch located on the front wall of the case. Before unscrewing the filter plug, be sure to place a container under it to collect the water that begins to flow out of the system. After the liquid has drained, you need to rinse the filter element and remove accumulated debris and adhering dirt from the walls of the hole. The drain hose is squashed or kinked

Then you should take a flashlight and illuminate the hole under the garbage filter. Inspect the impeller and use a long wooden stick to check how it rotates. If the part does not move, or it turns with great difficulty, you can start checking the pump in the Bosch washing machine.

Preparing equipment for repair

Replacing the pump yourself is not very difficult. The work will take about an hour. Before you begin the repair, you need to prepare the equipment and figure out where the drain pump is located in Bosch washing machines.

Be sure to follow safety rules - before work, turn off the power to the washing equipment, disconnect the device from the house communications.

For most Bosch washing machines, the elements of the drainage system are located in the lower part of the body, covered with a protective panel or a special hatch. To release the latches, it is recommended to use a slotted screwdriver. Carefully prying the panel with a tool, you need to remove it.

When the false panel is removed (or the hatch is opened), you will see the location of the garbage filter. This is a plastic structure that protects the drain pump impeller from debris and foreign objects. You will have to unscrew the filter element and wash it in warm water.

Once the filter is removed, the pump impeller can be accessed through the hole. You should inspect it and scroll it with a long stick. The blades should rotate with slight jerks, but freely. If the movement of the element is difficult, there may be hair wrapped around it or other debris stuck to it. To clean the part, you will have to remove the drain pump from the machine.

The next step is to lay the washer on its side. Before putting the machine down, it is necessary to lay a blanket or carpet on the floor to prevent damage to the body. Next, the machine carefully and smoothly lowers. Some models are equipped with a tray that must be removed and put aside. Looking under the base of the Bosch washing machine, you can see the pump and the snail.

Before starting to replace the drain pump, it is recommended to check the element with a multimeter. The probes of the device should be connected to the pump terminals and the alternating voltage should be set on the tester to 700 V. Next, the automatic machine must be plugged into a power outlet and the “Drain” program must be started. After a while, you need to see what value is displayed on the multimeter screen. If the display shows 220 Volts, but the pump does not drain, you can start replacing the part.

If the water drainage program works, but voltage does not reach the element, it is highly likely that the control module is broken. You should not get into the electronics of the washing machine with your own hands without sufficient experience and knowledge. It is better to resort to the help of a specialist.

Instructions for replacing parts

When the pump malfunction is confirmed, you need to proceed to the final stage of work. You can buy a replacement part in specialized stores or on the Internet. To do this, you need to tell the manager the brand and model of the Bosch washing machine or show the dismantled element. The algorithm for replacing the drain pump is as follows:

disconnect both pump terminals, disconnect the power wires;
using a screwdriver, unscrew the three screws that connect the pump to the volute;
grab the pump, carefully “break” the part to the bottom;
remove the element from the machine;
prepare a new drain pump;
put the working element in its original place;
fix the pump with bolts;
connect the terminals and two wires removed earlier;
secure the bottom of the washer;
screw the garbage filter into place;
put the washing machine on its feet;
reinstall the false panel.

Even a beginner can replace the drain pump; the main thing is to strictly follow the instructions for action.

Afterwards, all that remains is to run a test wash with an empty drum and observe the progress of the program. If the water drains freely, it means everything is done correctly. In fact, the process of checking, dismantling and installing a new pump takes a little time. Of course, you can invite a specialist, but then you will have to pay several thousand for diagnostics and repair of equipment.