Audi 80/90/Coupe

since 1986-1991 of release

Repair and car operation



Audi 80/90/Coupe
+ 1.2. Car identification
+ 2. Engines, carburetors
3. Greasing system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Ignition system
+ 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 hand brake
   10.1.9. Removal of the lever of the hand brake
   + 10.2. Hydraulic components
   + 10.3. Anti-blocking system of brakes
+ 11. Steering
+ 12. Body, salon
+ 13. Central air
+ 14. Electric equipment







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10. Brake system

10.1. Mechanical components

10.1.1. Technical characteristics

GENERAL INFORMATION

Support of forward brakes  – Girling
1. 35 N of m.
always replace
hold directing pin at an inhaling and untwisting
2. Support
do not remove a brake hose at replacement of brake shoes
3. Thermal screen
it is established on the piston
4. Arm of brake shoes
is on sale as the spare part with previously greased directing pins
if protective caps were damaged, replace them with caps from a repair kit, a detail 443 698 470
5. Brake shoes
always replace at once four blocks (on both wheels)
topshchina (new brake shoes): 14.00 mm
wear limit: 2.00 mm
wear limit (including fixing plates): 7.00 mm
6. Brake disk
replace at the same time both disks
remove a support before disk removal
diameter of a brake disk: 256.00 mm
thickness (ventilated disk): 22.00 mm
wear limit: 20.00 mm
7. A bolt with a gear head, 125 N of m clean teeths if you are going to use an old bolt

Prevention

At repair use all repair kit.

At repair restore a surface of brake disks at once from two parties, never process only one party. Always check a condition and thickness of brake shoes.


Support of forward brakes – Giriing – for all-wheel drive and models with 20-klapanny engines, and also Compartment models

1. Support
do not remove a brake hose at replacement of brake shoes
use a press for piston pressing in
support and old brake shoes for piston introduction in the cylinder
2. 35 H.м.
always replace
hold directing pin at an inhaling and untwisting
3, 4. Brake shoes
always replace at once four blocks
(on both wheels)
after replacement of brake shoes press a brake pedal several times at the motionless car
thickness (new brake shoes): 13.00 mm
wear limit: 2.00 mm
wear limit (including fixing plates): 7.00 mm
5. Brake disk
replace at the same time both disks
remove a brake support before disk removal
diameter of a brake disk: 276.00 mm
thickness: 25.00 mm
wear limit: 23.00 mm
6. Arm of brake shoes
is on sale as the spare part with previously greased directing pins
if protective caps were damaged, replace them with caps from a repair kit, a detail 443 689 470
7. 125 N of m.

Prevention

Two самоконтрящихся a bolt from a repair kit are not required at repair of brakes of Teves. In a return case use all repair set.


Support of forward brakes – Teves
1. Cap
2. A directing pin, 25 N of m.
3. Support
do not remove a brake hose at replacement of brake shoes
4. A bolt with a gear head, 125 N of m.
clean teeths if you are going to use an old bolt
5. Arm of brake shoes

6. Brake shoes
always replace at once four blocks (on both wheels)
thickness of new brake shoes): 14.00 mm
wear limit: 2.00 mm
wear limit (including fixing plates): 7.00 mm
7. Brake disk
always replace brake disks at once on both wheels
remove a support for disk removal
diameter of a brake disk: 256.00 mm
thickness: 22.00 mm
wear limit: 20.00 mm
8. Thermal screen
it is established on the piston

Support of back brakes – Girling
1. Spring clip
holds a rope of napковочного of a brake on a fixing arm
2. Rope of a parking brake
3. 65 N of m.
4. Brake disk
always replace brake disks at once on both wheels for disk removal
diameter of a brake disk: 245.00 mm
thickness: 10.00 mm
wear limit: 8.00 mm
5. Brake shoes
always replace at once four blocks (on both wheels)
thickness (new brake shoes): 12.00 mm
wear limit: 2.00 mm
wear limit (including fixing plates): 7.00 mm
6. Arm of brake shoes
is on sale as the spare part with previously greased directing pins
if protective caps were damaged, replace them with caps from a repair kit, a detail 443 698 470
7. Support
remove from an arm of brake shoes at replacement of blocks
do not remove a brake hose at replacement of brake shoes
at release models after January, 1989 diameter of the piston of a support is equal 38 mm
at replacement use a support only demanded type (with the piston of the demanded diameter)
8. 35 N of m.
always replace

Prevention

At repair use all repair kit.


Technical characteristics

Mодели with a forward drive
Engine
4-or 5-cylinder
Diameter of the main brake cylinder
22.2 mm
Diameter of the amplifier
228.9 mm
Amount of brake liquid (approximately)
0.6 liter

Forward wheels
Back wheels
Diameter of the piston of a support of a brake
54 mm
36 mm
Diameter of a brake disk
256 mm
245 mm
Thickness of a brake disk
22 mm
10 mm
Thickness of brake shoes
14 mm
12 mm
Total area of four brake shoes
200 cm2
120 cm2
All-wheel drive models
Engine
The 5-cylinder
Diameter of the main brake cylinder
22.2 mm for models with the engine in capacity of 136 h.p.
23.81 mm for models with the engine in capacity of 170 h.p.
25.4 mm for Compartment models
Diameter of the amplifier
228.9 mm for models with the engine in capacity of 136 h.p.
Diameter of the piston of the servo-driver of brakes
24 mm for models with the engine in capacity of 170 h.p.
Amount of brake liquid (approximately)
0.6 liter
 
Forward wheels
Back wheels
Diameter of the piston of a support of a brake
54 mm
36 mm
40/45 mm (for Compartment models)
38 mm for release models after January, 1989
38 mm for models with the engine in capacity of 170 h.p.
Diameter of a brake disk
256 mm
245 mm
276 mm (for Compartment models)
Thickness of a brake disk
22 mm
10 mm
25 mm (for Compartment models)
Thickness of brake shoes
14 mm
12 mm
13 (for Compartment models)
Total area of four brake shoes
194 cm2
108 cm2
224 cm2 (for Compartment models)

Prevention

At repair use all repair kit.