Brake system of the car BMW 3 Series E30

Brake system. General information
The brake system consists of a master cylinder, a hydraulic booster, and disc brakes on the front wheels and drum brakes on the rear wheels. Depending on the...

Removal and installation of brake pads — disc brakes of the front wheels
Removal Remove the decorative wheel cap. Mark the position of the wheel rims on the front wheel hubs with paint. This will allow the balanced wheel to be...

Removal and installation front brake discs and brake calipers
Removal Loosen the wheel bolts. Remove the decorative cap. Mark the position of the wheel disks on the wheel hubs with paint. Thanks to this, the balanced...

Removal and installation rear brake pads
Removal Loosen the wheel bolts. Remove the decorative cap. Mark the position of the wheel disks on the wheel hubs with paint. Thanks to this, the balanced...

Removal and installation of wheel brake cylinders
Removal Remove the brake pads. Loosen the union nut "1" of the brake pipe without unscrewing it. Loosen bolts "2" securing the wheel brake cylinder....

Removal and installation rear disc brake pads. Models 325E/325i
Removal Remove the decorative wheel cap. Mark the position of the wheel rims on the rear wheel hubs with paint. This will ensure that the balanced wheel is...

Removal and installation rear disc brake calipers. Models 325E/325i
Removal Remove the decorative wheel cap. Mark the position of the wheel rims on the rear wheel hubs with paint. This will ensure that the balanced wheel is...

Removal and installation the rear brake disc with rear disc brakes. Models 325E/325i
Removal Remove the rear wheel brake caliper. Loosen the mounting bolt (arrow) using a 5 mm open-end wrench. Release the parking brake completely. Remove the...

Checking the thickness of brake discs
Note: Models 320i, 325e, 325i are equipped with internally blown brake discs, while other models have solid brake discs. Mark the position of the wheel rims on...

Brake fluid
When working with brake fluid, consider the following: Brake fluid is poisonous and should never be sucked out by mouth through a hose. Pour brake fluid only...

Bleeding the brake system
During each brake repair with opening the brake system, air can get into the pipes. Air in the system is felt by the pliability of the brake pedal. In this...

Replacing brake pipes and brake hoses
Tubes are used as rigid connections in the brake system. Connection to the wheels is made by flexible brake hoses that can withstand pressure. Raise the car....

Checking the power steering
The operation of the power steering is checked by significantly increasing the force on the brake pedal to ensure the necessary braking. Press the brake pedal...

Removal and installation parking brake pads
Removal Remove the rear wheel brake disc. Disconnect the lower return spring. Check the return spring. Replace the rusted and weakened spring. Lightly press...

Removal and installation the handbrake lever
Removal Lift the rubber boot of the handbrake lever and pull it back. Remove the ashtray, you may need to remove the ashtray light bulb as well. Loosen the...

Removal and installation the handbrake cable. Drum brakes
Removal Lift the rubber boot of the handbrake lever and pull it back. Loosen the handbrake cable nuts. Remove the rear drum brake shoes. Remove the handbrake...

Removal and installation the handbrake cable. Rear disc brakes
Removal Remove the handbrake lever. Remove the handbrake shoe spacer lock. Disconnect the handbrake cable from the rear axle swing arm and pull the cable out...

Adjusting the handbrake
Lift the rubber boot of the handbrake lever and pull it back. Unscrew 2 nuts "2" of the handbrake cables. Drum brake Install the brake pads by pressing the...

Removal and installation, adjustment of the brake light switch
The brake light switch is located under the steering wheel on the handbrake pedal lever. Examination Remove the lower trim (see section " Removal and...

ABS system
Depending on the model and composition of the equipment, BMW vehicles can be equipped with an ABS anti-lock braking system. Additional equipment of the vehicle...

Maintenance work on the brake system
Checking the brake fluid level and the brake fluid level warning light The expansion tank with brake fluid is located in the engine compartment. It has two...

Replacing brake fluid
Brake fluid absorbs moisture from the air through the pores of the brake hoses and through the ventilation hole in the expansion tank cap, so over time the...

Diagnostics of brake system faults

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