Ford Sierra

1982-1993 of release

Repair and car operation


Ford Siyerra
+ 1.2. Car identification
+ 2. Maintenance
- 3. General data
   - 3.1. Cars with petrol engines
      3.1.1. Masses and transfer numbers
      3.1.2. Operational liquids
      + 3.1.3. Changes in a car design from 1984 to 1986.
      - 3.1.4. Changes in a car design from 1987 to 1989.
         3.1.4.1. OHC engine
         + 3.1.4.2. Dm3 CVH 1,8 engine
         + 3.1.4.3. DOHC engine
         + 3.1.4.4. Service and repair
         + 3.1.4.5. Coupling
         3.1.4.6. Mechanical five-speed transmission of type N
         + 3.1.4.7. Mechanical five-speed transmission of MT 75 type
         3.1.4.8. Automatic transmission
         3.1.4.9. Forward suspension bracket
         - 3.1.4.10. Brake system
            3.1.4.10.1. Technical characteristics
            3.1.4.10.2. Service and repair
            3.1.4.10.3. Adjustment of the hand brake
            3.1.4.10.4. Air removal from brake system
            3.1.4.10.5. Anti-blocking system
            3.1.4.10.6. Check of functioning of ABS
            3.1.4.10.7. Hydraulic knot of management
            3.1.4.10.8. Sensor of speed of rotation of wheels
         + 3.1.4.11. Electric equipment
         3.1.4.12. General data
      + 3.1.5. Changes in a car design with 1990 till February, 1993.
   + 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment






3.1.4.10.4. Air removal from brake system
GENERAL INFORMATION

Removal of air is carried out after opening of hydraulic contours of brakes, and also always when the pedal of a brake becomes "soft" and it is necessary to press it several times that brakes started to operate.

Introduction remarks

It is impossible to unscrew deaerator of back brakes when the hydraulic accumulator is under pressure, and also if the pedal of a brake is pressed. The hydraulic brake feeds a contour of back brakes under the pressure of 18 MPas.

Before performance of any actions which can be accompanied by an effluence of brake liquid, it is necessary to lower surely pressure in the accumulator by strong pressing about 20 times on a brake pedal.

At service, adjustment and repair of brakes it is impossible to include ignition if it is not demanded by the instruction on service.

It is necessary to use recommended by car firm manufacturer brake liquid and to pour it from original, just open capacities.

At air removal from brakes it is necessary to support all the time demanded level of brake liquid in a tank.

Air removal from a contour of forward brakes

PERFORMANCE ORDER
1. To put on a deaerator of a forward brake a transparent tube from an artificial material. Other end of a tube to lower in the transparent capacity filled with brake liquid.
2. To press a brake pedal. If it does not render resistance, it is necessary to press it while it will not start to render considerable resistance.
3. At the pressed pedal of a brake to weaken a deaerator. To hold a pedal all the time while coming-up vials of air are visible.
4. To screw up a deaerator and to release a brake pedal.
5. To repeat two last operations until brake liquid will not start to follow from a tube without air vials.
6. In the same way to remove air from a contour of the second forward brake.

Air removal from a contour of back brakes

PERFORMANCE ORDER
1. To put on a deaerator of a back brake a transparent tube from an artificial material. Other end of a tube to lower in the transparent capacity filled with brake liquid.
2. To press a brake pedal.
3. To weaken a deaerator.
4. To include ignition. It will be put in action by the hydraulic pump and brake liquid will start to follow from a tube. It is necessary to wait, while coming-up liquid will not contain air vials.
5. To release a pedal of a brake and to screw up a deaerator.
6. To switch off ignition and to wait, the hydraulic pump will not stop yet.
7. To repeat these actions for air removal from a contour of the second back brake.