Opel Astra, Zafira
Since 1998 of release
Repair and car operation
+ Cars Opel Astra and Zafira
+ The operation manual
+ Routine maintenance
+ The engine
+ Systems of cooling, heating
+ The power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
- Brake system
System of antiblocking of brakes (ABS) and антипробуксовочная system (TCS) - the general information and codes of malfunctions
Prorolling of brake system
Check of a condition and replacement of brake lines and hoses
Replacement колодок disk brake mechanisms of forward wheels
Replacement колодок disk brake mechanisms of back wheels
Replacement of boots of drum-type brake mechanisms of back wheels
Condition check, removal and installation of a brake disk
Removal, check of a condition and installation of a brake drum
Removal, regenerative repair and installation of supports of disk brake mechanisms of forward wheels
Removal, regenerative repair and installation of supports of disk brake mechanisms of back wheels
Removal, service and installation of wheel cylinders of drum-type brake mechanisms of back wheels
Removal and installation of the main brake cylinder
Removal and installation of a pedal of a foot brake
Check of serviceability of functioning/tightness, removal and installation of assemblage of the vacuum amplifier of brakes
Removal, check of serviceability of functioning and installation of the return valve of the vacuum amplifier of brakes
Removal and installation of the vacuum pump of the servo-driver of the brake amplifier (diesel models)
Check of serviceability of functioning of the vacuum pump of the servo-driver of the brake amplifier (diesel models)
Adjustment of a drive of a lay brake
Removal and installation of the lever of a lay brake
Removal and installation of cables of a drive of a lay brake
Removal, installation and adjustment of the gauge-switch of stoplights
Removal and installation of the gauge-switch of a control lamp of raising of a lay brake
Removal and installation of components ABS and TCS
Removal, installation and adjustment of the valve-regulator of pressure in hydraulic contours of brake mechanisms of back wheels
+ Suspension bracket and steering
+ Onboard electric equipment
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The general information
All models of cars considered in the present Management are equipped by hydraulic brake system with vacuum strengthening. On forward wheels disk brake mechanisms whereas mechanisms of back wheels can have both disk, and a drum-type design are always established.
The dual design of the main brake cylinder equipped with two separate tanks (ГТЦ) allows to break a hydraulic path into two, operating independently from each other, a contour. The last means that in default one of the contours, the second continues to work in a former mode, providing adequate braking of the car. Hydraulic contours have a diagonal arrangement. Refusal of any of contours, naturally, conducts to decrease in efficiency of braking and is accompanied by operation of a control lamp on an instrument guard at squeezing of a pedal of a foot brake.
All brake mechanisms are equipped by self-regulators. Thus indemnification of deterioration brake колодок disk mechanisms (forward and back) is carried out automatically whereas, on drum-type brake mechanisms the special adjusting devices which activation occurs during braking, and also at raising of a lay brake are established.
The system of antiblocking of brakes (ABS) can be established on all models. On models Zafira without ABS the valves-regulators providing updating of pressure of a brake liquid depending on degree of loading of the car are built in both back brake contours sensitive to loading on a back axis.
The main brake cylinder (ГТЦ)
ГТЦ it is established on assemblage of the servo-driver of the vacuum amplifier of the brakes, fixed on a back partition of an impellent compartment. From above on the cylinder the big tank of a hydraulic liquid equipped with a plastic cover is located. The tank fastens in the cylinder by means of plugs through passage and a cylindrical pin.
As already it was mentioned above, ГТЦ has the dual design providing functioning of two independent hydraulic contours. Pressure of a liquid in each of contours is forced by the individual piston in the main cylinder.
The vacuum amplifier of brakes
The amplifier uses depression created in the inlet pipeline for increase of efficiency of functioning of a hydrodrive of brake system. The servo-driver of the vacuum amplifier is fixed on a back partition of an impellent compartment.
The control lever of a lay brake is located in salon of the car and means тросового a drive influences brake mechanisms of back wheels. At lever raising on the models equipped with drum-type back brake mechanisms, cables delay the executive levers attached to assemblages of brake boots in mechanisms of both back wheels. Thus boots get divorced in the parties, nestling on a working surface of drums.
At service of components of brake system of cars it is necessary to observe some special safety measures: