Patent ID: 7344206

Claim:
A method for degassing at least a portion of a hydraulic vehicle brake system of the type having an external-force service brake system and a muscle-powered auxiliary brake system, in which the external-force service brake system has a hydraulic pump ( 14 ) whose intake side is connected to a brake fluid reservoir ( 24 ) and to whose pressure side is connected to a hydraulic reservoir ( 18 ) and also to at least one wheel brake cylinder ( 30 ) with a brake pressure buildup valve ( 28 ) interposed, and the wheel brake cylinder is connected to the brake fluid reservoir ( 24 ) via a brake pressure reduction valve ( 32 ), and the muscle-powered auxiliary brake system has a master cylinder which is actuatable by muscle power, which master cylinder is connected to the brake fluid reservoir ( 24 ) and also to the wheel brake cylinder with a disconnection valve ( 52 ) interposed, the method for degassing at least a portion of the vehicle brake system ( 10 ), comprising, opening the brake pressure buildup valve ( 28 ) and the disconnection valve ( 52 ), and closing the brake pressure reduction valve ( 32 ), wherein the hydraulic reservoir ( 18 ) is evacuated for the degassing.