Warning: The brake fluid used in the hydraulic brake system is poisonous, so if it comes into contact with the skin, immediately wash the area with plenty of water. If the liquid gets into the eyes or inside the body, you should immediately consult a doctor. Some fluids tend to be highly flammable and can ignite even from contact with hot vehicle components. In addition, the fluid used in the hydraulic brake system dissolves paint and plastic, so if fluid comes into contact with the car's paintwork, wash it with plenty of water. Also, this liquid is hygroscopic, i.e. absorbs moisture from the air, so liquid stored for a long time in an open container is not recommended.
Bleeding the hydraulic brake system is necessary to remove air, which significantly reduces braking efficiency. Air can get into the hydraulic system due to depressurization of the system during repairs, replacement of individual components or brake fluid. The presence of air in the drive is indicated by an increased stroke of the brake pedal and its softness. Before bleeding, check the tightness of all brake drive units and their connections.
Never reuse brake fluid.
When performing the operation of pumping the brake system, do not let the brake fluid level fall below the middle of the tank.
If brake fluid has left the system due to a system leak, find the cause and repair the leak before proceeding.
If the hydraulic system has been partially disconnected and appropriate precautions have been taken to prevent further loss of fluid, only part of the system can be bled.
Bleeding can be done with an assistant or on your own with a brake bleeding kit. Always follow the instructions. It is recommended to use the kit wherever possible, as it greatly simplifies the bleeding procedure. If there is no bleed kit, stock up on a clean container and a clear plastic tube of the appropriate length, which should fit snugly over the bleed fitting. This will require the help of another person.
Pumping sequence
If only a partial disconnection of the hydraulic brake system has been made and appropriate precautions have been taken, it is sufficient to bleed only this part of the system. If bleeding the entire hydraulic brake system, start bleeding each circuit from the front wheel on models without anti-lock braking system. On models with anti-lock braking system, bleed the front circuit first.
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