gf2520w3003a

Hydraulic central clutch release bearing, component description

Type gf · topic 25.20 · version 0101 · 2007-03-12

Applies to: MODEL 950.5, 952.5 with CODE (G74) Remote control clutch pedal except CODE (GE1) Automatic gear control (AGS) MODEL 976.0 /3 with CODE (G74) Remote control clutch pedal except CODE (GE1) Automatic gear control (AGS)

Where it sits

Function group 2 Chassis › 25 Clutch › 25.20 Clutch actuation — Series 950 (models 5**) · Series 952 (models 5**) · Series 976 (models 0**, 3**)

GF25.20-W-3003A

Hydraulic central clutch release bearing, component description

6.3.07

MODEL 950.5, 952.5
with CODE (G74) Remote control clutch pedal
except CODE (GE1) Automatic gear control (AGS)

MODEL 976.0 /3
with CODE (G74) Remote control clutch pedal
except CODE (GE1) Automatic gear control (AGS)

Hydraulic central clutch release bearing, component description

W25.20-1022-11

Location

Shown on transmission 712.63

10 Hydraulic clutch-release mechanism

The hydraulic central clutch release bearing (10) is located on the axle shaft of the manual transmission and is bolted on rigidly with the front transmission housing.

Task

The hydraulic central clutch release bearing (10) operates the clutch pressure plate.

Hydraulic central clutch release bearing, component description

W25.20-1023-82

Function

1 Release bearing

2 Pressure piston

3 Preload spring

4 Housing

5 Transmission input shaft

B2 Clutch travel sensor

A Basic position

B Pressure position

When the clutch is operated the pressure piston (2) of the hydraulic central clutch release bearing (10) is operated hydraulically and is moved forwards on the transmission input shaft (5). In the process the clutch bearing (1) presses against the disk spring of the clutch and operates it. The hydraulic central clutch release bearing (10) is sealed internally by a seal boot.

When the clutch is not operated, the preload spring (3) ensures that the clutch bearing (1) is subject to a constant minimum load in order to avoid bearing noise. Via the clutch travel sensor (B2) the drive control (FR) control unit (A3) records the position of the hydraulic central clutch release bearing (10) inductively.