Brake system of the car BMW 3 Series E21

Detailed technical specifications
The hydraulic brake system is dual-circuit. The front service brakes are disc brakes, the rear ones are drum brakes. On the 323i model, the front and rear...

Front wheel brake mechanism parts
Front wheel brake mechanism parts: A - ATE brand; B - Girting brand. 1 — oil seal; 2 - protective cover; 3 - solid brake disc; 4 - ventilated brake disc (on...

Rear Drum Brake Wheel Parts
Rear Drum Brake Details: 1 - brake drum; 2 - brake shoe; 3 - friction lining; 4 - brake shield; 5 - expansion bar; 6 - lower tension spring; 7 - upper tension...

Rear disc brake parts for the 323i model
Rear disc brake mechanism details for the 323i model: 1 - brake disc; 2 - protective cover; 3 — support; 4 - brake pads; 5 - locking pins and cross spring; 6 -...

Master Cylinder Parts
Master Cylinder Parts: A - until August 1977.; B - since August 1977. 1 — hydraulic reservoir; 2 - filter; 3 - cork; 4 — master cylinder body; 5 - tank seals;...

Vacuum booster parts
Vacuum booster parts: 1 - vacuum booster; 2 — vacuum booster mounting brackets; 3 - air filter; 4 - buffer washer; 5 - protective cover; 6 - check valve; 7 -...

Parking brake parts
Parking brake parts: 1 - lever handle; 1 - lever lock button; 3 - pressure spring; 4 — parking brake drive lever; 5 - protective cover; 6 - dog; 7 - rod; 8 —...

Removal and installation disc brake pads
Removal Raise the front of the vehicle, place it on stands and remove the wheels. On vehicles with Girling front brakes, remove the retaining pins. Knock out...

Removal and installation the front wheel brake mechanism
Removal Raise the front of the car, place it on stands and remove the wheel. Use a syringe to suck out the brake fluid from the hydraulic reservoir. Unscrew...

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

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

Removal and installation brake shoes for drum brakes
Removal Remove the brake drum. Remove the brake shoe pressure springs Disconnect the lower and upper brake shoe tension springs. Remove the brake pads from...

Removal and installation the wheel cylinder
Removal Remove the brake drum. Turn the adjusting eccentric heads until the brake pads are completely released. Disconnect the brake fluid supply pipe from the...

Disassembly and assembly of the wheel cylinder
Disassembly Remove the wheel cylinder. Remove the protective caps and take the pistons, seals and spring out of the cylinder. Wash the wheel cylinder parts....

Removal and installation rear brake pads
Removal Raise the rear of the vehicle, place it on stands and remove the wheels. Knock out the brake shoe retaining pins and remove the cross springs. Remove...

Removal and installation of rear disc brake mechanism
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 the rear brake leaf
Removal Remove the rear wheel. Remove the caliper and hang it from the body without disconnecting the brake hose. Loosen the Allen key bolt and remove the...

Brake Master Cylinder — Removal and Installation
Removal Use a syringe to remove some of the brake fluid from the hydraulic reservoir. Disconnect the flexible hose of the clutch hydraulic drive from the...

Brake master cylinder — disassembly and assembly
Disassembly Push the piston slightly into the cylinder and unscrew the lock screw. Remove the retaining ring and take out the front brake actuator piston....

Vacuum booster — removal and installation
Removal Remove the brake fluid from the hydraulic reservoir using a syringe. On the 323i model, remove the fuel injection system mixture regulator. Remove the...

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

Pressure regulator — removal and installation
Removal Remove the brake fluid from the hydraulic reservoir using a syringe. Disconnect the lines from the pressure regulator. Loosen the bolts securing the...

Brake adjustment on all models except the «323i»
Adjusting the clearance between the pads and the brake drum Raise the rear of the vehicle and support it on stands. Lower the parking brake lever to its lowest...

Parking brake system of cars model «323i»
Adjusting the parking brake system Move the parking brake lever to the lowest position. Remove the rear wheel and rotate the brake disc until the adjusting...

Bleeding the brake hydraulic system
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...

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