Master brake cylinder
Master brake cylinder with two coaxial pistons.
Brand: ATE or FAG.
Diameter of the main brake cylinder, mm: 20.64.
Piston stroke, mm:
- primary circuit: 14.5;
- secondary circuit: 12.5.
Vacuum brake booster
Brand: Bendix Mastervac, ATE (Teves) or FAG (Shiter).
Piston diameter, inches:
- cars with carburetor engines before 1985 model year: 7;
- vehicles with fuel-injected engines before model year 1985 and all vehicles since model year 1985: 9.
Distance between the center of the pushrod fork hole and the support surface of the brake booster, mm:
- before 1985 model year: 189;
- since 1985 model year: 222.5±0.5.
Pressure regulator
The regulator regulates the pressure in the hydraulic drive of the rear wheel brake mechanisms depending on the load on the rear axle of the vehicle.
Pressure regulator test data*
* The test is carried out on a loaded vehicle with a driver and a full fuel tank.
**The numerator shows values for vehicles up to model year 1985, and the denominator shows values for vehicles from model year 1985 onwards.
(The original article is available on the website: AUDImanual.ru)