Brake system of the car BMW 5 Series E39

Brake system — general information
The brake system consists of a master brake cylinder, a brake booster, and disc brakes on the front and rear wheels. The hydraulic brake system has 2 circuits:...

Anti-lock braking system (ABS)
The anti-lock braking system consists of an electro-hydraulic control module with an integrated electronic control unit, an ABS indicator and wheel-mounted...

Automatic stability and traction control system (ASC+T)
ASC + T system (Automatische-Stabilitats-Control plus Traktion) prevents the rear wheels from slipping when the accelerator pedal is depressed, for example...

Front Disc Brake Caliper
1 - support 2 - brake shield 3 - Hexagon head bolt, 110 Nm 4 - dust cap 5 - air bleed valve 6 - guide pin 7 - plug 8 - retaining spring 9 - pad wear sensor 10...

Technical characteristics of the brake system

Removal and installation front disc brake pads
Removal Mark the position of the front wheels relative to the hubs with paint. This will allow the balanced wheel to be installed in its original position....

Removal and installation the front brake disc / brake caliper
Note: If the brake caliper needs to be removed only to dismantle the brake disc, do not release the brake hose, otherwise the brake system will need to be bled...

Removal and installation rear disc brake pads
Removal The position of the rear wheels in relation to the hubs is marked with paint. Thanks to the atom, the balanced wheel can be installed in its previous...

Removal and installation the rear brake caliper
Note: If the brake caliper needs to be removed only to dismantle the brake disc, do not release the brake hose, otherwise the brake system will need to be bled...

Removal and installation the rear brake disc
Removal Remove the rear brake caliper. Do not unscrew the brake hose, otherwise the assembly will be removed from the brake system it will be necessary to...

Checking the thickness of brake discs
Examination Mark the position of the wheels relative to the hubs with paint. This will allow the balanced wheel to be installed in its original position. When...

Brake fluid
When handling brake fluid, pay attention to the following: Brake fluid is poisonous. Never suck brake fluid out with your mouth through a hose. Pour brake...

Bleeding the brake system
After each brake repair, during which the hydraulic system was opened, air could get into it. This air must be removed from the brake system. If there is air...

Replacing the brake line
Rigid pipes with a polymer coating are used as brake system pipelines. Flexible hoses that can withstand high pressure are used to connect to the front wheel...

Replacing the front brake hose
Caution: Brake hoses must not come into contact with oil or fuel. Do not coat brake hoses with paint or underbody anti-corrosion coating. Removal Mark the...

Checking the brake booster
The brake booster should be checked when an unusually high force must be applied to the brake pedal to achieve sufficient braking effect. With the engine off,...

Parking brake system
1 - handbrake lever 2 - casing 3 - lock nut 4 - adjusting nut hex bolt 5 - Hexagon head bolt 6 - Parking brake switch (hand brake) 7 - handbrake cable 8 -...

Removal and installation of brake columns of the parking brake system
Removal Remove the rear brake disc. Remove the upper tension spring with tension spring pliers. Replace the spring with traces of corrosion or a twisted one...

Adjusting the handbrake
The parking brake is completely separated from the service brake system. This means that the parking brake mechanism is subject to only minor wear. The...

Removal and installation the handbrake lever
Removal Remove the center console . Completely unscrew the 2 lock nuts and 2 adjusting nuts of the handbrake cable "arrows". Disconnect the electrical wire "1"...

Removal and installation the handbrake cable
Removal Remove the handbrake lever. Remove the handbrake pads. Press pin "1" and remove the handbrake shoe release lock. Remove bolts "2" securing the Bowden...

Checking/Replacing the Brake Light Switch
The brake light switch is located in the driver's side footwell near the brake pedal. Examination If the brake light does not come on, check the fuse first....

Brake fault diagnostics

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