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4, 5, 7 and 8 - deaerators of the brake system
It is necessary to remove air after each repair associated with the opening of the system.
Air removal without special equipment
Bleeding an electrically driven pump
1. Fill expansion tank.
2. Disconnect the low pressure supply hose and reconnect when brake fluid starts to flow out of it (substitute container).
3. Check if the deaerators are screwed on properly (4) And (5) hydraulic device and drain bolt.
4. Open deaerators (7) And (8) hydraulic device, unscrewing them by 1 turn.
5. Gently depress the brake pedal until it stops.
6. Switch on the ignition to operate the electrically driven pump.
7. Switch off the ignition after 30 seconds.
8. Release pressure on the brake pedal.
9. close deaerators (7) And (8).
Bleeding the hydraulic device
1. Connect deaerators (4) And (5) with containers containing a small amount of brake fluid.
2. Press the brake pedal and open the deaerator (4), and then close it.
3. Release the pressure on the pedal and repeat these steps 10 times.
Attention! For deaerators (7) And (8) there is no need to connect an air vent tube. Air is removed through the internal circuit.
4. Open deaerators (4) And (5) to start the operation of the electrically driven pump.
5. Turn on the ignition.
6. Close the deaerators when the brake fluid flows out without air bubbles, and then wait until the electric pump stops.
Attention! During these actions, it is imperative to check and replenish the amount of brake fluid in the expansion tank to avoid airing the system.
7. Remove air from front and rear wheel calipers.
Removing air from calipers
1. Turn on the ignition.
2. Connect the deaerators of four calipers to the tanks.
3. Press with a little effort on the brake pedal.
4. Open one of the deaerators and close it when the brake fluid flows out clean and without air bubbles.
5. This operation should be performed for other deaerators.
6. Switch off the ignition.
7. Relieve pressure by loosening the drain bolt 1/2 turn.
8. Screw in the drain screw.
9. Gently depress the brake pedal.
10. Open deaerators (4) And (5), connected to containers.
11. Close deaerators.
12. Release pressure on the brake pedal.
13. Repeat these steps several times, making sure that the brake fluid flows out without air bubbles.
14. Check the screwing of the deaerators.
15. Check the quality of the operation.
Air removal with special equipment
1. Read the instructions for installation and maintenance of the device.
2. Reduce the pressure in the hydraulic circuit. For this purpose, the drain bolt of the electrically driven pump assembly must be unscrewed.
3. Pressurize the circuit using a bleeder.
4. Remove air from calipers.
5. Connect deaerators to tanks (4) And (5) hydraulic unit.
6. Open deaerators (4) And (5).
7. Close the deaerators when the brake fluid flows out free of air bubbles.
8. Screw in the drain screw.
9. Disconnect the bleeder.
10. Open deaerators (4) And (5), connected to containers.
11. Switch on the ignition to operate the electrically driven pump.
12. close deaerators (4) And (5), when the brake fluid begins to flow out without air bubbles.
13. Switch off the ignition.
14. Reduce hydraulic pressure by unscrewing the drain bolt 1/2 turn.
15. Screw in the drain screw.
16. Gently depress the brake pedal.
17. Open deaerators (4) And (5), connected to containers.
18. Close deaerators.
19. These operations should be carried out several times, making sure that the brake fluid flows out without air bubbles.
20. Perform the same steps several times for deaerators (7) And (8).
21. Check that all deaerators are screwed.
22. Check the quality of the performed operation.
Checking the quality of the operation performed to remove air from the hydraulic circuit
1. Install a pressure gauge on each front brake caliper vent.
2. Switch on the ignition to engage the electrically driven pump assembly.
3. Open the pressure gauge deaerators.
4. With a little effort, press the brake pedal.
5. Close the deaerators when the brake fluid flows out free of air bubbles.
6. Reduce hydraulic pressure by unscrewing the drain bolt 1/2 turn. Screw in the drain screw.
7. Press the brake pedal all the way down. The pressure should be 6.0 MPa.
8. If this value is not reached, the air must be removed from the circuit.
9. Disconnect the pressure gauges and bleed the air from the front brake calipers.
Checking the brake fluid level
1. Switch on the ignition to engage the electrically driven pump assembly.
2. Wait until the electrically driven pump stops working.
3. Switch off the ignition.
4. Check if the brake fluid level in the reservoir reaches the mark indicating the maximum level.
5. Add liquid if necessary.