Toyota Corolla

1992-1998 of release

Repair and operation of the car

Toyota Corolla
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Cooling systems, heating
+ 5. Fuel, exhaust systems
+ 6. System of decrease in toxicity
+ 7. Transmissions
+ 8. Coupling and half shafts
- 9. Brake system
   9.1. Specifications
   9.2. System of anti-blocking of brakes (ABS)
   9.3. Brake shoes of forward brakes
   9.4. Support of forward brakes
   9.5. Brake shoes of back disk brakes
   9.6. Support of back disk brakes
   9.7. Brake disk
   9.8. Brake shoes of back drum brakes
   9.9. Working cylinder
   9.10. Main cylinder of brake system
   9.11. Brake hoses and tubes
   9.12. Hydraulic system of brakes
   9.13. Vacuum amplifier
   9.14. Emergency brake
   9.15. Ropes of the emergency brake
   9.16. Brake pedal
   9.17. Switch of headlights of a stoplight
   9.18. Valve of restriction of pressure sensitive to car loading
+ 10. Suspension bracket and steering
+ 11. Body
+ 12. Electric equipment

9.13. Vacuum amplifier


Elements of the vacuum amplifier

1. Vacuum hose
2. Laying
3. Pin
4. Check
5. Returnable spring
6. Vacuum amplifier

Work check

1. Squeeze out a brake pedal several times at the switched-off engine and check that it every time stopped at one and that distance from a floor.
2. Squeeze out a pedal of a brake and start the engine. If the pedal fell a little, so the vacuum amplifier works normally.

Tightness check

1. Start the engine and switch off it in one-two minutes of work. Slowly squeeze out a brake pedal several times. If by each pressing a brake pedal, it moves less, so the vacuum amplifier is tight.
2. Squeeze out a brake pedal at the working engine, kill the engine, without releasing a brake pedal. If in thirty seconds the pedal did not weaken, so the vacuum amplifier is tight.


The vacuum amplifier is not subject to dismantling. Special tools which are not in each auto repair shop are necessary for its repair. In view of its essential influence on work of brakes, at failure, the amplifier it is necessary to replace.

1. Disconnect the hose going from the engine to the vacuum amplifier. Be accurate and do not damage a hose at a detachment it from the vacuum amplifier.
2. Remove the main cylinder of brake system (see subsection 9.10).
3. Remove the lower panel of finishing of a steering column (see subsection 11.23).
4. Remove a returnable spring of a pedal of a brake.
5. Find the pusher fork connecting the vacuum amplifier and a pedal of a brake. Get to the check by means of flat-nose pliers and pull out a pin (it is specified by an average arrow).
6. Turn off and remove four nuts and washers fixing the vacuum amplifier to a back wall of a motive compartment (are specified by shooters, the top right nut is not visible on an illustration). Perhaps, you should use a small lamp to make out them.
7. Remove the vacuum amplifier from a back wall of a motive compartment.


1. Installation is carried out upside-down removals. Tighten nuts of fastening of the vacuum amplifier till the demanded moment of an inhaling specified in the section of technical characteristics at the beginning of this chapter. Use new to the check if old the check it was loosened.
2. At installation of the new vacuum amplifier it is necessary to measure a gap between the piston of the main cylinder and a pusher of the vacuum amplifier and if it is necessary, to adjust it.
3. By means of a micrometer for measurement of depth or a caliper measure distance from deepening on the main cylinder to a fixing flange of the main cylinder. Then, measure distance from the end of a pusher of the vacuum amplifier to a surface of the amplifier (including laying) on which the fixing flange of the main cylinder is established. The received values have to be equal.
4. If the received values are not equal, turn the adjusting screw on the end of a pusher of the vacuum amplifier so to receive the demanded gap.
5. After completion of installation of the main cylinder and connection of tubes and hoses, it is necessary to adjust brake pedal height its free wheeling, and, also to pump over brake system. These operations are described in the corresponding sections of this chapter.