11.6. Pumping of hydraulic system
Need for pumping of a hydraulic path arises only in a case when the rassoyedineniye of hydraulic lines was made or when draining brake fluid air got to system.
Change of hydraulic liquid of the brake system has to be made on a regular basis according to the schedule of routine maintenance of the car. Procedures of change of brake fluid and pumping of hydraulic system are very close in the order of performance taking into account the moments noted in the text.
The hydraulic path of the brake system is equipped with several gates of pumping. So, gates are available on brake supports and wheel cylinders. Besides, some models are equipped with the additional gate of pumping installed on the valve - pressure regulator.
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- Fill in the tank on GTTs with pure brake fluid and support him at least half filled during all procedure of pumping.
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If it is required to make change of brake fluid, merge it from the tank, wipe internal walls of the last pure неворсящейся with rags and fill in with fresh liquid. |
- Connect a piece of a transparent hose to the left back gate of pumping (on the wheel cylinder) or to the valve gate - pressure regulator (if that is equipped). Lower the opposite end of a hose in the transparent capacity which is partially filled with pure brake fluid.
- Several times squeeze out a brake pedal, record it in the lower situation and unscrew the gate. Tighten the gate and slowly release a pedal. Repeat the procedure until the hose does not begin to come out liquid, free from air bubbles.
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If liquid change was made, continue pumping until pure fresh liquid does not begin to follow from a hose. |
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In order to avoid repeated hit in system of air do not allow in the course of pumping of lowering of brake fluid in the GTTs tank below half level, periodically you make having added. The liquid merged from system is not subject to repeated application, - use for a doliv only fresh. |
- Repeat procedures for the remained pumping gates.
- After completion of pumping the pedal of a brake has to be squeezed out with a firm resistance without any signs of softness of the course. Check reliability of tightening of all gates of pumping.
- Add the required amount of fresh brake fluid in the GTTs tank, having normalized its level.
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