S 65 AMG (220.179) V12-6.0L Turbo (275.981) (2006)
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Vacuum Brake Booster: Description and Operation
GF42.31-P-4000-02A Brake Booster BAS, Function
GF42.31-P-4000-02A Brake booster BAS, function
Component Identification
Basic function as a normal brake booster.
An emergency stop is detected by the BAS control unit via the BAS diaphragm travel sensor (b1). In the case of a BAS brake application, the BAS
solenoid valve (y1) opens valve (d), which admits atmospheric pressure from inside the vehicle via the air filters (g and f) to the rear of the power
diaphragms (c).
The full assistance pressure from the brake booster is transmitted to the master brake cylinder via the output rod (h).
When the brake application is terminated, the control unit receives a signal from the BAS release switch (s1) and the BAS solenoid valve (y1) closes
again. The BAS assistance is terminated.
