Hello, at OM 602, the vacuum pump has said goodbye to the fact that the curve disc has been damaged (radial grooves). What needs to be changed in order to get the new replacement vacuum pump back into operation? (at MB workshop books is unfortunately extremely hard to get there) Many greetings … Frankhttps://img.motor-talk.de/KBr0RnO1h8RQTNQA.10.jpg to 1. picture red and green arrow … should actually be round. Was milled off blue arrows … should look like the part with red arrow … is broken https://img.motor-talk.de/KBr0RZjHOhZsqXb_.10.jpg to 2. picture Rifen in the curve disc … What is behind the gear wheel? What effort is necessary to replace the gear wheel with the curve disc? Greeting … Frank