Brake system of the car BMW 3 Series E21

Detailed Specifications
The hydraulic system of brakes is double-circuit. Front service brakes - disc, rear - drum. By car model «323i» front and building working disc brakes. The...

Front wheel brake parts
Front wheel brake parts: A - ATE brand; B - brand Girting. 1 - stuffing box; 2 - protective cover; 3 - solid brake disc; 4 - ventilated brake disc (on «320i»...

Details of drum brake rear wheel
Details of drum brake rear wheel: 1 - brake drum; 2 - brake shoe; 3 - friction lining; 4 - brake shield; 5 - expanding bar; 6 - lower coupling spring; 7 -...

Details of the disc brake mechanism of the rear wheel model «323i»
Model Rear Wheel Disc Brake Parts «323i»: 1 - brake disc; 2 - protective cover; 3 - support; 4 - brake pads; 5 - fixing fingers and cruciform spring; 6 - guide...

Details of the main brake cylinder
Brake Master Cylinder Details: A - until August 1977; B - since August 1977. 1 - hydraulic reservoir; 2 - filter; 3 - cork; 4 — the body of the main cylinder;...

Vacuum booster parts
Vacuum booster details: 1 - vacuum amplifier; 2 - brackets for mounting the vacuum booster; 3 - air filter; 4 - buffer washer; 5 - protective cover; 6 - check...

Parking brake parts
Parking brake details: 1 - lever handle; 1 - button for fixing the lever; 3 - pressure spring; 4 - parking brake lever; 5 - protective cover; 6 - dog; 7 - rod;...

Removal and installation of disc brake pads
Withdrawal Raise the front of the car, put it on stands and remove the wheels. On a vehicle with Girling front brakes, remove the lock pins. Knock out the...

Removal and installation of the brake mechanism of a forward wheel
Withdrawal Raise the front of the car, put it on stands and remove the wheel. Suck the brake fluid out of the reservoir with a syringe. Loosen the bolts...

Disassembly and assembly of the brake mechanism of the front wheel
Disassembly Remove the brake pads and caliper. Remove retaining rings and protective caps from cylinders and pistons. Block the piston with pliers 34 1 050. By...

Removal and installation of a brake disk
Raise the front of the car and remove the wheel. Remove the brake hose from the mounting bracket on the telescopic suspension strut. Remove the caliper and...

Removal and installation of a brake drum
Withdrawal Raise the rear of the car and remove the wheel. Unscrew the adjusting eccentrics and loosen the parking brake cable. After unscrewing the mounting...

Removal and installation of brake pads drum brakes
Withdrawal Remove the brake drum. Remove brake pad springs Disconnect the lower and upper coupling springs of the shoes. Remove the brake pads from under the...

Removal and installation of the wheel cylinder
Withdrawal Remove the brake drum. Turn out the heads of the adjusting eccentrics until the brake pads are completely released. Disconnect the brake fluid...

Dismantling and assembly of the wheel cylinder
Disassembly Remove the wheel cylinder. Remove the protective caps and remove the pistons, cuffs and spring from the cylinder. Wash the wheel cylinder parts....

Removal and installation of rear brake pads
Withdrawal Raise the rear of the car, put it on stands and remove the wheels. Knock out the fixing pins of the brake shoes and remove the cruciform springs....

Removal and installation of the rear disc brake
Remove the rear wheel. Disconnect the brake hose from the wheel cylinder and plug the hose inlet. After unscrewing the two mounting bolts, remove the caliper....

Removal and installation of the rear brake disc
Withdrawal Remove the rear wheel. Remove the caliper and hang it to the body without disconnecting the brake hose. Loosen the hexagon socket head bolt and...

Brake master cylinder — removal and installation
Withdrawal Use a syringe to remove some of the brake fluid from the reservoir of the hydraulic drive. Disconnect the flexible hydraulic clutch hose from the...

Brake master cylinder — disassembly and assembly
Disassembly Slide the piston inside the cylinder a little and unscrew the locking screw. Remove the circlip and remove the front brake piston. Remove the rear...

Vacuum booster — removal and installation
Withdrawal Remove the brake fluid from the reservoir with a syringe. On the model «323i» remove the fuel injection mixture regulator. Remove the locking clip...

Checking the performance of the vacuum booster
Press the brake pedal ten times with the engine off to create the same pressure in the cavities of the vacuum booster, close to atmospheric. While holding the...

Pressure regulator — removal and installation
Withdrawal Remove the brake fluid from the reservoir with a syringe. Disconnect the pipes from the pressure regulator. Loosen the bolts securing the pressure...

Adjustment of brakes on cars of all models, except «323i»
Adjustment of a backlash between pads and a brake drum Raise the rear of the car and place it on stands. Lower the parking brake lever to its lowest position....

Parking brake system for 323i vehicles
Parking brake adjustment Move the parking brake lever to the lowest position. Remove the rear wheel and rotate the brake disc until the adjusting ratchet...

Removal of air from a hydraulic drive of brakes
Bleeding the brakes is necessary to remove air from the hydraulic drive. Air can get into the hydraulic drive due to depressurization of the system during the...