6.12. Pumping of a hydraulic actuator of the brake system

Sequence of pumping of brake mechanisms:
– back right;
– forward left;
– back left;
– forward right.
1. Check level and if it is necessary, add brake fluid in a tank to MAX tag. Press several times a brake pedal.
2. Clear of dirt and raise dust the valve of production of air on the brake mechanism.
3. Remove a protective cap from the valve of production of air. Put on a rubber hose a head of the valve and ship the end of a hose in the pure transparent vessel which is partially filled with brake fluid (the end of a hose needs to be shipped in liquid).
4. The assistant has to press a pedal of a brake of 4-5 times sharply (an interval between pressing 1–2 c) and leave a pedal pressed.
5. Unscrew the valve of production of air on 1/2–3/4 turns.
6. In the liquid following from a hose vials of air will be visible. When liquid ceases to follow from a hose, completely wrap the valve of production of air then the assistant has to release a brake pedal.
7. Repeat operations 4-6 until in the following liquid allocation of bubbles stops. At the same time control the level of brake fluid in a tank and if necessary add it, without allowing decrease in level MIN tags are lower.
8. Remove a hose, wipe dry the union of the valve of production of air and put on it a protective cap. Pump over brake mechanisms of other wheels if it is necessary.

       NOTE
During removal of air in contours of the brake system there is a difference of pressure displacing the piston of the signaling device at the same time the control lamp in a combination of devices lights up. Therefore it is necessary to return the piston of the signaling device in neutral situation.

9. Lower completely the lever of the parking brake.
10. Remove a protective cap and unscrew the valve of production of air of one of brake mechanisms of forward wheels on 1–2 turns.
11. Smoothly press a pedal of a brake and at the time of switching off of a control lamp stop a pedal. Holding a pedal in this situation, wrap the valve.
12. If when pressing a pedal the lamp blinks, so the piston slipped neutral situation and it is necessary to repeat operation, having turned out the valve from the working cylinder of the brake mechanism of other forward wheel.