Opel Vectra A

since 1988-1995 of release

Repair and car operation

Vektr A. Opel
+ 1. Maintenance instruction
+ 1.1 Maintenance
+ 2. Engine
+ 3. Repair of DOHC engines
+ 4. Repair of the diesel engine
+ 5. Cooling system
+ 6. Fuel system
+ 7. A fuel and exhaust system of models with system of injection of fuel
+ 8. Exhaust system and system of fall of toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrosystems
+ 11. Transmission
+ 12. Mechanical transmission
+ 13. Automatic transmission
+ 14. Power shafts
- 15. Brake system
   15.2. General information
   15.3. Anti-blocking system of brakes (ABS)
   15.4. Pumping of hydraulic brake system
   + 15.5. Replacement of forward brake shoes
   15.6. Replacement of back brake shoes on disk brakes
   + 15.7. Replacement of back brake shoes on drum-type brakes
   15.8. Replacement of brake shoes of the hand brake on back disk brakes
   15.9. Support of a forward brake
   15.10. Support of a back disk brake
   15.11. Brake disk
   15.12. Forward brake disk
   15.13. A back brake disk on models with SOHC engines
   15.14. A back brake disk on models with DOHC engines
   15.15. Brake drum
   15.16. Back working brake cylinder
   15.17. Brake board of a back brake
   15.18. Protective casing of a forward brake disk
   15.19. Main brake cylinder
   15.20. Repair of the main brake cylinder (model without ABS)
   15.21. Vacuum amplifier of brakes
   15.22. Hydraulic ABS modulator
   15.23. The ABS sensors established on wheels
   15.24. ABS control unit
   15.25. ABS relay (only ABS-2E system)
   15.26. Valves of adjustment of pressure
   15.27. Brake pipelines and hoses
   15.28. Adjustment of the hand brake
   + 15.29. Cable of the hand brake
   15.30. Lever of the hand brake
   15.31. Brake pedal
+ 16. Suspension bracket
+ 17. Body
+ 18. Electric equipment
+ 19. Check of malfunctions


15.22. Hydraulic ABS modulator


The hydraulic ABS modulator with the removed cover
1–screws of fastening of a clip of a plait of wires;
2–grounding tire;

Arrangement of screws of fastening of the hydraulic ABS modulator

1. Remove a weight wire from the accumulator.
2. For reduction of losses of brake liquid uncover a popolnitelny tank of brake system, close a tank mouth polyethylene and again screw a cover. It is necessary in order that the cover tightly closed a popolnitelny tank.
3. Unscrew the screw and remove a plastic cover from the hydraulic modulator.
4. Unscrew two screws and remove from the modulator a clip of a plait of wires (see fig. The hydraulic ABS modulator with the removed cover).
5. Disconnect the electric socket from the modulator.
6. Unscrew connecting nuts and disconnect brake tubes from the modulator. Close the ends of tubes suitable jams and move them aside from the modulator, thus do not deform them.
7. Unscrew three nuts of fastening of the modulator (see fig. An arrangement of screws of fastening of the hydraulic ABS modulator), then raise and incline the modulator in order that it was possible to unscrew a nut, the fixing tire of grounding.
8. Unscrew a nut, the fixing tire of grounding, then take the hydraulic modulator from a motor compartment, thus do not spill brake liquid on a paint and varnish covering of the car.
9. If modulator replacement is made, remove from the old modulator two relays and establish them on the new modulator.


1. Before installation check that the bolts, fixing a modulator arm to the panel of a body are reliably tightened and rubber pillows of the modulator are in a good condition.
2. Installation is made in sequence, return to removal taking into account the next moments.
3. Before installation of the modulator fix the grounding tire.
4. Remove polyethylene from a jellied mouth of a popolnitelny tank of brake system and pump over all hydraulic brake system.
5. Check that the control lamp of ABS dies away after engine start.