FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Pressure Reduction Control Functions







Pressure Reduction Stage
During the pressure reduction stage the brake fluid flows via a reservoir (6) into return pump (7). To maintain the fluid volume of the master cylinder, the return pump returns the brake fluid into the master cylinder against the prevailing pressure.
To dampen the delivery nose. each circuit is provided with a silencer (10).





On plug socket (13a) of the hydraulic unit two is a relay (A7K1) for solenoid valves and relay (A7K2) for the return pump. The hydraulic unit is connected to the vehicle ground at the hexagon nut (10) via a grounding cable