Mazda 626

1991-1998 of release

Repair and operation of the car


Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and half shafts
- 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 brakes
   9.8. Wheel cylinder
   9.9. Main brake cylinder
   9.10. Brake tubes and hoses
   9.11. Pumping of the brake system
   9.12. Vacuum amplifier
   9.13. Height and free wheeling of a pedal of a brake
   9.14. Emergency brake
   9.15. Ropes of the emergency brake
   9.16. Switch of an alarm bulb of low level of brake fluid
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips


4295d568



9.12. Vacuum amplifier

Check

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

Removal

PERFORMANCE ORDER
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.

Installation

PERFORMANCE ORDER
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 the surface of the vacuum amplifier to a pusher - it is distance "And".
4. Measure distance from a fixing flange until the end of the main cylinder - it is distance of "B".
5. Measure distance from the end of the main cylinder before deepening in the piston - it is distance "In".
6. Subtract value "B" 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 the pusher regulator.