34 10 014 Adjusting handbrake

WARNING: This page is about a different variant/trim than selected.

Perform inspection in the following manner

When 1st ratchet is engaged, no braking force should be exerted.

The difference in wheel circumferential forces between the left and right wheels may deviate by max. 30 % from the greater value (measured on brake analyzer).

In event of larger deviations of wheel circumferential force: readjust parking brake.

Braking with locked wheels must be possible with the parking brake.

The parking brake must be reset if the actuation stroke is greater than 6 teeth.

NOTE: Accurate adjustment of the parking brake is only possible if the parking brake Bowden cables and all moving parts on the parking brake move easily and function correctly.

Basic setting of the parking brake is required whenever:

In event of excessive actuation stroke (6 teeth).
When replacing parking brake Bowden cables
When replacing parking brake lever

Setting instruction for parking brake Bowden cables

Release gaiter (1) of parking brake lever from clip.

Release self-locking nut (2) until the load on the Bowden cable has been relieved completely.

Fig 1: Identifying Gaiter And Self-Locking Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Remove REAR BRAKE PADS .

Insert brake piston into brake caliper with special tools 34 6 309, 34 6 306, 34 6 307, 34 6 308.

Install brake pads.

Fig 2: Inserting Brake Piston Into Brake Caliper Using Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in adjusting nut on parking brake lever until a gap (A) of 0.5-1.5 mm between parking brake actuating lever (2) and stop (1) is set at brake calipers.

Fig 3: Identifying Parking Brake Actuating Lever With Stop

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Observe following sequence:

Release adjusting nut on parking brake lever completely.
Remove brake pads.
Insert brake piston into brake caliper.
Install brake pads.
Adjust adjusting nut on parking brake lever as shown above.
Apply parking brake lever three times.
Press brake pedal to floor at least three times so that air gap can be set.
Carry out operational check

Checking adjustment on brake analyzer

0th tooth (parking brake released): Vehicles with manual transmission: Shift lever in neutral position.

Vehicles with automatic transmission: Selector lever position "N" wheel circumferential force ≤ 100 N.

1st tooth: No increase in braking force with regard to 0th tooth.

Indicator lamp can be lit.

2nd tooth: An increase in braking force must take place. Indicator lamp must be lit.

3rd tooth: Increase in braking force.

4th tooth: Wheel circumferential force per wheel: 700 N to 1300 N.

(Must be achieved in the 4th tooth at the latest)