LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2021 >> GLB250 Base >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Automatic Transmission - 247 Chassis >> Basic Knowledge >> (Multidisk Brake, Basic Function - GF27.51-P-2000A)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

(Multidisk Brake, Basic Function - GF27.51-P-2000A)

Model all with transmission 725 

Example illustration of automatic transmission with multidisk brakes 

G14472107Courtesy of MERCEDES-BENZ USA

Shown on automatic transmission with multidisk brakes 

G14472108Courtesy of MERCEDES-BENZ USA

Overview 

This document contains information on:

General 

The multidisk brakes are used for braking and hold the ring gear, sun gear or planetary gear of a planetary gear set. These are supported against the transmission housing (4) to transfer the torque.

Function 

A multidisk brake consists of several inner plates (6) on an inner plate carrier and outer plates (5) on an outer plate carrier. The external plate carrier is permanently connected to the transmission housing (4). In the multidisk brakes, double-sided disks (disks coated on both sides) are used.

For shifting, the different parts of the planetary gear set are held by hydraulic pressure being exerted on the multidisk brakes.