bmw Workshop Repair Guides

BMW Workshop Service and Repair Manuals

4 RA Checking Service Brake_ High- And Low-pressure Tests > < 2 RA Testing AWD Vehicles On Dynamic Brake And Power Analyzers (E30, E34, E46, E53, E
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34 00 012

Parking brake function check

Note:

If deviations are identified during the following check, the
parking brake must be adjusted:

Drive vehicle onto chassis dynamometer.

Warm up brakes.

Check handbrake.

0th tooth (handbrake released):

Vehicles with manual transmission: Shift lever in neutral
position.

Vehicles with automatic transmission: Selector lever in "N"
position.

Without locking differential 

150 N.

With locking differential 

 200 N (possibly odd display).

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

Indicator lamp can be lit.

2nd tooth: Indicator lamp must be lit.

3rd tooth: Increase in braking force.

5th tooth: The brake force display must have reached 

 400 N.

Checking brake force differential at wheel:

Apply handbrake until a wheel circumferential force (measured on
brake test stand) of min. 1000 N is reached.

Max. permitted brake force differential right/left 

35 % (referred

to greater brake value).

It must be possible to brake with locked wheels with the
handbrake.

RA  Parking brake function check

BMW AG - TIS

23.01.2013  07:48

Issue status (12/2007) Valid only until next DVD is issued

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4 RA Checking Service Brake_ High- And Low-pressure Tests > < 2 RA Testing AWD Vehicles On Dynamic Brake And Power Analyzers (E30, E34, E46, E53, E