Mazda 626

1991-1998 of release

Repair and car operation

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and semi-axes
- 9. Brake system
   9.1. Introduction
   9.2. Technical characteristics
   9.3. System of anti-blocking of brakes (ABS)
   9.4. Brake overlays of disk brakes
   9.5. Brake support
   9.6. Brake disk
   9.7. Brake shoes of drum-type brakes
   9.8. Wheel cylinder
   9.9. Main brake cylinder
   9.10. Brake tubes and hoses
   9.11. Pumping of brake system
   9.12. Vacuum amplifier
   9.13. Height and free wheeling of a pedal of a brake
   9.14. Hand brake
   9.15. Ropes of the hand brake
   9.16. Switch of an alarm bulb of low level of brake liquid
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electroschemes
+ 14. Good advice

9.12. Vacuum amplifier


Work check
1. Squeeze out a pedal and start the engine. If the pedal fell a little, means, the vacuum amplifier is serviceable.
2. Squeeze out a brake pedal several times at the switched-on engine and check, that the reserve of a course of a pedal of a brake always was same.
Tightness check
3. Start the engine and muffle it in few minutes. Slowly squeeze out a brake pedal several times. The course of a pedal of a brake should decrease each time.
4. Squeeze out a brake pedal at the working engine, then muffle the engine, without releasing a brake pedal. If the pedal does not fall within 30 seconds, means, the vacuum amplifier is tight.


1. Remove the main brake cylinder. Disconnect a vacuum hose from the amplifier.
2. Disconnect a pusher of the amplifier from a brake pedal.
3. Turn off four fixing nuts and remove the amplifier.


1. Installation is carried out upside-down removals.
2. Connect the vacuum pump to the amplifier and create depression in 500 mm of a mercury column.
3. Measure distance from a surface of the vacuum amplifier to a pusher is a distance "And".
4. Measure distance from a fixing flange till the end of the main cylinder is a distance of "B".
5. Measure distance from the end of the main cylinder before deepening in the piston is a distance "In".
6. Subtract value "V" from value "B", subtract the received value from value "A". The received result is value of a gap of a pusher of a servoamplifier.
7. Adjust length of a pusher (1) if it is necessary, having weakened a lock-nut (2) and having tightened up a pusher regulator.