Warning: The brake fluid used in the hydraulic brake system is poisonous, so if it gets on your skin, rinse the area immediately with plenty of water. If the fluid gets into your eyes or inside your body, seek immediate medical attention. Some fluids are highly flammable and can catch fire even when in contact with hot vehicle components. In addition, the fluid used in the hydraulic brake system dissolves paint and plastic, so if the fluid gets on your vehicle's paintwork, rinse it with plenty of water. This fluid is also hygroscopic, i.e. it absorbs moisture from the air, so it is not recommended to use the fluid if it has been stored in an open container for a long time.
Bleeding the hydraulic brake system is necessary to remove air, which significantly reduces braking efficiency. Air can enter the hydraulic system due to depressurization of the system during repairs, replacement of individual units or brake fluid. The presence of air in the drive is indicated by an increased brake pedal travel and its softness. Before removing air, check the tightness of all brake drive units and their connections.
Never reuse brake fluid.
When bleeding the brake system, do not allow the brake fluid level to drop below the middle of the reservoir.
If brake fluid has been lost due to a leak in the system, find the cause and repair the leak before proceeding.
If the hydraulic system has been partially disconnected and adequate precautions have been taken to prevent further fluid loss, it may be possible to bleed only part of the system.
Bleeding can be done with an assistant or independently, using a brake system bleeding kit. Always follow the instructions. It is recommended to use a kit wherever possible, as it greatly simplifies the bleeding procedure. If there is no bleeding kit, you need to stock up on a clean container and a transparent plastic tube of the appropriate length, which should fit tightly onto the bleeding nipple. This will require the help of another person.
Pumping sequence
If only a partial disconnection of the hydraulic brake system was performed and the appropriate precautions were taken, it is sufficient to bleed only that portion of the system. If bleeding the entire hydraulic brake system, begin bleeding each circuit from the front wheel on models without ABS. On models with ABS, bleed the front circuit first.
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