Audi 80/90/Coupe

since 1986-1991 release

Repair and operation of the car



Audi 80/90/Coupe
+ 1.2. Identification of the car
+ 2. Engines, carburetors
3. Lubrication system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. System of ignition
+ 8. Transmission
+ 9. Suspension brackets, wheels
- 10. Brake system
   10.1.2. Brake shoes of forward brakes
   10.1.3. Brake shoes of back brakes
   10.1.4. General adjustment of back brakes (Girling)
   10.1.5. Replacement of brake shoes (all-wheel drive models)
   10.1.6. General adjustment of back brakes (Girling) (all-wheel drive models)
   10.1.7. Forks of pedals of a brake and coupling
   10.1.8. Adjustment of the emergency brake
   10.1.9. Removal of the lever of the emergency brake
   + 10.2. Hydraulic components
   - 10.3. Anti-blocking system of brakes
      10.3.2. Hydraulic pump
      10.3.3. Electronic control unit
      + 10.3.4. ABS elements of a forward wheel
      + 10.3.5. ABS elements of back brakes
      10.3.6. General comments on repair
+ 11. Steering
+ 12. Body, salon
+ 13. Air conditioning system
+ 14. Electric equipment






10.3.2. Hydraulic pump

GENERAL INFORMATION

Hydraulic pump

1. Brake tube
connecting the hydraulic pump and
support of a brake of the right forward wheel
2. Fastening of a plait of wires
3. Plait of wires
4. Relay of the pump of the return pipeline
5. Relay of the electromagnetic valve
6. Hydraulic pump
7. Gear lock washer
8. 10 N. of m.
9. Самоконтрящаяся nut. 7 N. of m.
10. Gear lock washer
11. 20 N. of m.
12. Grounding wire
13. Arm
14. Fastening
15. Plug
16. Brake tube
connecting the hydraulic pump and a support of a brake of the left forward wheel
17. Brake tube
connecting the hydraulic pump and a support of a brake of the right back wheel
18. Brake tubes
the connecting main brake cylinder and the hydraulic pump
19. Brake tube
connecting the hydraulic pump and a support of a brake of the left back wheel
20. Hydraulic booster and main brake cylinder
21. Casing

Prevention

The hydraulic pump is not subject to repair, it is possible to replace both relays only. Do not sort. If it is necessary, replace all hydraulic pump. Check high and low pressure.


The hydraulic pump for all-wheel drive models

1. Hydraulic booster and main brake cylinder
2. Tormoznan the tube (connection "V") connecting the hydraulic pump and
main brake cylinder
3. Plait of wires
4. Brake tube
(connection "h") connecting
hydraulic pump and supports
brakes of back wheels
5. Hydraulic pump
6. 10 N. of m.
7. Самоконтрящаяся nut.
moment of an inhaling of 7 N. of m.
8. 20 N. of m.
9. Gear lock washer
10. Grounding wire
check reliability of connection
11. Kronshetyn
12. Fastening
13. Plug
14. Brake tube
(connection "r") connecting the hydraulic pump and a support of a brake of a forward right wheel
15. Brake tube
(connection "l") connecting the hydraulic pump and a support of a brake of the left back wheel
16. Relay of the pump of the return pipeline
17. Relay of an electromagnetic kalppan
18. Fastening of a plait of wires
19. Casing
20. Brake tube
connecting the hydraulic pump and the distributive valve

Replacement

PERFORMANCE ORDER
1) disconnect a wire of the negative plug of the accumulator
2) disconnect brake hoses
3) remove the hydraulic pump

Prevention

At removal and installation of brake hoses, check that they were designated and were established according to marks in the hydraulic pump.


Establish only company brake hoses.

At repair, close brake hoses and branch pipes as soon as possible.

Moment of an inhaling of fastenings of brake hoses of 15 N. of m.

At work which demand depressurization of hydraulic system merge brake fluid by means of the device for filling / draining of brake fluid.

In addition, it is necessary to carry out an inspection of high and low pressure in the brake system.

High and low pressure, check

PERFORMANCE ORDER
1) unscrew the screw of a spuskny opening of a support of a forward brake;
2) connect the VW 1310 tool and pump over the brake system;
3) install the press device of a brake pedal between a pedal of a brake and sitting of the driver
4) press on a brake pedal that the indicator of pressure showed 50 Bars
5) watch indications of the sensor within 45 seconds
6) pressure should not fall more, than on 4 Bara
7) if pressure fell to bigger value, replace the hydraulic pump
8) adjust the press device of a pedal of a brake so that pressure indicator in the brake system showed pressure in 6 Bars
9) wait 3 minutes

10) pressure should not drop more, than by 1 Bar

11) if pressure fell to bigger value, replace the hydraulic pump