Brewing unit gasket replacement

Introdução

The gasket of the brewing unit has to withstand heavy usage. Especially the large O-Ring on the piston needs replacing from time to time. Follow this guide to replace the gasket.

These instructions may also help with coffeemakers from Saeco and Gaggia - they are all made by the same manufacturer and have a very similar design.

O que você precisa

Passo 1 Brewing unit gasket

Brewing unit gasket replacement, Brewing unit gasket: passo 1, imagem 1 %32

Brewing unit gasket replacement, Brewing unit gasket: passo 1, imagem 2 %32

Open the hatch on the side panel and remove the brewing unit.

Traduzir

Passo 2

The spout for the hot coffee is located on the top of the brewing unit. It is fastened with two screws. Underneath is the crema valve. It consists of a spring and a little glass ball. Make sure the spring is reinserted with the thin end touching the glass ball when re-assembling.
Remove the two Torx T10 screws on the crema valve.
Lift off the crema valve minding the spring and the glass ball.

Traduzir

Passo 3

The upper piston is held in place in the frame with four locking pawls. Push down all four latches with a spudger, then remove the piston by pushing it downward.
If you want to replace the gasket, you can do this now and re-assemble the device and stop here. However, a general maintenance of the brewing unit is strongly recommended.
Unscrew the Torx T10 screw on the brewing sieve and remove it.

Traduzir

Passo 4

Brewing unit gasket replacement: passo 4, imagem 3 %32

There are three Torx T10 screws in deep blind holes that hold together the two parts of the brewing unit. Unscrew them and lift off the upper side panel.

Traduzir

Passo 5

Now you can disassemble the brewing unit into its three main parts: the brewing unit and the two side panels.

Traduzir

Passo 6

You can push out the lower piston from the brewing unit if you snap the deflection lever out of its socket with a screw driver.
Clean all parts with very hot water and dishwasher liquid.
Grease all moving parts with food grade silicone fat. Dont forget the tracks in the side panels.

Traduzir

Passo 7

Brewing unit gasket replacement: passo 7, imagem 3 %32

Take this opportunity to carefully replace the two O-rings on the support valve. The larger one is at the top. These two seals are stressed during every brewing process. Therefore, lubricate them with food-safe silicone grease.
On some models, the support valve is covered. In this case, you must unscrew the cover first.

Traduzir