Bosch dishwasher pump replacement

Bosch dishwasher pump replacement After any working cycle, the dishwasher drains all waste liquid into the sewer system, which is done by the drain pump, also known as a pump. If at some point the drainage stops, then you will have to repair or replace the Bosch dishwasher pump. This must be done so that dirty water does not accumulate in the “home assistant”, and the equipment itself does not freeze during operation, which will interfere with cleaning dirty dishes. We will tell you how to properly restore the functionality of the PMM in such a situation.

We'll collect everything you need

It is believed that most of the restoration work can be done with your own hands, because it only requires a few classic screwdrivers and a new part that needs to be installed in place of the failed one. This is a minimal set, but you can also prepare pliers, an ordinary multimeter and an awl to make changing the pump even easier. Pliers are useful to tighten the fasteners holding the dishwasher drain pump, screwdrivers are needed to remove the fixing screws, and an awl is needed to pry up the panels of household appliances. Finally, a multimeter will help measure resistance and thus accurately determine the faulty components.

Before you begin repairing or replacing the drain pump and circulation pump, you must carefully prepare the machine. Here's what you need to do first to make the job successful.

Disconnect the Bosch dishwasher from all communications.
Unscrew the lower decorative strip, which is located directly under the PMM door.
Disconnect the inlet hoses from the device body.
Move the dishwasher forward slightly and disconnect the drain hose from the siphon.
Cover the floor with cellophane, rags or unnecessary towels, and then install the “home assistant” on them.

This is how you can prepare built-in Bosch dishwashers for repair with your own hands. The algorithm for stand-alone instances will be similar, but extracting them will be much easier.

We will replace the pump ourselves

Changing your pump is easy and can be done in less than fifteen minutes. It is much more difficult to partially disassemble the “home assistant” in order to gain access to the drain pump. Dismantling should be carried out exclusively according to the instructions in order to avoid typical beginner mistakes and not accidentally damage anything. Read our manual carefully and carefully repeat point by point.

Open the dishwasher door and remove all dish baskets and cutlery tray.
Take out the sprinklers.
Unscrew and pull out the garbage filter that resembles a plastic cup.
Remove the filter mesh.
Unscrew the fasteners located under the mesh.
Carefully turn the appliance over or tilt it on its side.
Remove the side panels and plastic fasteners.

Do not forget to install the fastening holders in their places after completing the work during reassembly.

Remove thermal insulation as it will interfere with work.
Remove the filling pipe, and then the pan with PMM units from the body.
Disconnect all elements in the tray connected by wires. Just in case, take a photo of the correct wiring connection to all parts.
Finally, turn off the circulation pump by disconnecting all wires from it.
There is a pump located on the side of the pump, which must be firmly grasped with your hand and turned to the left half a turn to remove.

All that remains to be done to change the pump is to find an original spare part that will suit your “home assistant” from Bosch. You can write down the exact name of the dishwasher and its serial number in order to use this data to search for the pump on the Internet, or you can simply take the non-functioning part as an example and go with it to any store that sells dishwashers and parts for them.

When you have the new part in your hands, you need to install it according to our instructions in reverse order. Insert the element into the pump niche, turn it half a turn to the right, connect the wiring, and then all other components of the Bosch dishwasher. As you can see, you can cope with the replacement without calling a service center specialist - this will save you not only time, but also the family budget.