Condition check, removal and installation of the vacuum amplifier of brakes. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Цены, обслуживание на ремонт skoda fabia.
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
12.1. General information
12.2. General information on anti-blocking brake system
12.3. Replacement of blocks of disk brake mechanisms
12.4. Removal, major maintenance and installation of a support of the disk brake mechanism
12.5. Survey, removal and installation of a brake disk
12.6. Replacement of boots of drums of brake mechanisms
12.7. Removal and installation of the main brake cylinder
12.8. Condition check, removal and installation of the vacuum amplifier of brakes
12.9. Description, removal and installation of the vacuum hydraulic booster of brake system
12.10. Replacement of a cable (cables) of a drive of the parking brake
12.11. Adjustment of the parking brake
12.12. Condition check, removal and installation of assembly of the parking brake
12.13. Adjustment of a pedal of a brake
12.14. Check and adjustment of the switch of a stoplight
12.15. Survey and replacement of brake lines and hoses of hydraulic system of brakes
12.16. Pumping of hydraulic system of brakes
12.17. Diagnostics of malfunctions of brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








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12.8. Condition check, removal and installation of the vacuum amplifier of brakes

Components of assembly of a pusher of the typical vacuum amplifier

1 — the Protective cover
2 — the Holder
3 — the Shock-absorber
4 — the Air filter

Work check

 PERFORMANCE ORDER

  1. At the switched-off engine squeeze out several times a brake pedal, its course is not stabilized yet.
  2. Squeeze out a pedal and hold it, then start the engine. If the pedal thus slightly fell, means, everything is normal.

Tightness check

 PERFORMANCE ORDER

  1. Start the engine, and in one-two minutes switch off it. Slowly squeeze out a brake pedal several times. If for the first time the pedal leaves far down, and then, by the second and third pressing, gradually rises, means, the vacuum amplifier is tight.
  2. Squeeze out a brake pedal at the working engine, then stop the engine, without releasing a pedal. If after pedal deduction in the squeezed-out situation within 30 seconds its course did not change, means, the vacuum amplifier is tight.

Removal and installation

 PERFORMANCE ORDER

  1. Dismantle of the vacuum amplifier demands special tools and cannot be made by the house mechanic. If the arisen problem continues you to disturb, it is recommended to replace the block completely.
  2. Remove the main cylinder as it is described in the Section Removal and installation of the main brake cylinder.
  3. Disconnect a vacuum hose from the vacuum amplifier of brakes.
  4. Working in a passenger compartment, take a ware box and lower covering panels on the left side.
  1. Remove a collar and a fork pin to disconnect a pusher from the lever of a cross-section shaft (for models with right-hand management) or brake pedals (for models with left foreign management). On models with left foreign management also disconnect a returnable spring of a pedal of a brake.
  1. Give four fixing nuts and take the block of the vacuum amplifier from an impellent compartment.
  1. Survey the small filter in a protective cover on a pusher. If it is littered, it can influence operation of the vacuum amplifier. For cleaning of the filter wash out it in soft soap solution. If it nevertheless is not cleared, replace it.
  2. Installation repeats removal procedure upside-down. Tighten fixing nuts of the vacuum amplifier of brakes with demanded effort. Before establishing a protective cover on the air filter of a pusher of the amplifier, make sure that notches on the filter are located under 180 degrees to notches on the shock-absorber.

On models with right-hand management the pedal of a brake is on the right side of the car and incorporates to the left side by means of a cross-section shaft. Adjustment is made on a pusher on the left side, but the given size is measured on a pedal on the right side.

  1. Adjust height of a pedal of a brake and the stoplight switch (see. Section Adjustment of a pedal of a brake).
  2. Establish the main cylinder (see. The section Removal and installation of the main brake cylinder) also attach the vacuum pump.
  3. Carefully check work of brakes before the beginning of normal operation of the car.


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12.7. Removal and installation of the main brake cylinder
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12.9. Description, removal and installation of the vacuum hydraulic booster of brake system