Contents: Examination ⇩ Adjustment ⇩
Bleeding the brake system can be performed according to the procedure using the Testbook/r4 diagnostic tool or manually as described below.
Examination
1. The procedure in question refers to bleeding the entire system, but if the seal is broken in only one of the brake system circuits, then only that circuit should be bled. Such partial bleeding of the brake system is permitted only if a minor leak of brake fluid occurred when removing the brake pipe or hose.
CAUTION: If the brake pressure regulator or any component upstream of the pressure regulator is replaced, the brake system must be bled in accordance with the procedure using the Testbook/r4 diagnostic tool to ensure that air is removed from the newly installed components.
Adjustment
1. Raise the front and rear of the vehicle.
CAUTION: Do not work under a vehicle supported solely by a jack or lift. Always support the vehicle with safety stands.
2. Check the tightness of the connections of the pipes and hoses of the system and make sure there are no signs of fluid leakage.
3. Add brake fluid to the reservoir up to the "MAX" mark.
MAINTENANCE, MAINTENANCE OPERATIONS, Working fluid tanks.
CAUTION: Do not allow dirt or foreign fluids to enter the brake fluid reservoir. Add only DOT4 brake fluid stored in tightly sealed containers. Do not mix brake fluids from different manufacturers; they may be incompatible.
4. Attach the bleed hose to the bleed nipple on the front passenger side of the brake caliper and place the end of the hose in a clean container of brake fluid.
5. Press the brake pedal several times, then hold the pedal down.
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6. Loosen the bleed screw to release brake fluid and air from the system. Release the brake pedal, allowing it to return to its original position.
7. Smoothly press the brake pedal to its full stroke and let it return to its initial position. Repeat the operation until a stream of clean brake fluid, free of air bubbles, flows into the container. Keeping the brake pedal in the extreme lower position, tighten the bleeder nipple to a torque of 14 N·m.
CAUTION: During the bleeding procedure, maintain the brake fluid level in the brake system reservoir between the minimum and maximum level marks by adding fresh brake fluid.
8. Add brake fluid to the reservoir to the upper level.
9. Repeat the procedure for each wheel in the sequence shown.
CAUTION: Failure to follow the sequence specified may significantly reduce braking performance.
10. Remove the bleed hose from the fitting and put the protective cap on the fitting.
11. Press the brake pedal and check for any fluid leaks from the system.
12. Remove the supports and lower the vehicle.
13. Test the brake system on the road. When you press the brake pedal, it should be hard and have a short stroke.
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