Brake Testing On Brake Stand: Notes

Check 

1. 1 -  Check lining thickness on parking brake linings.
2. 2.3 -  Press parking brake pedal 10 notches.
3. 3.1 -  Adjust parking brake. See ADJUST PARKING BRAKE .
4. 5 -  Switch off ignition. Only if ignition is switched on and only with rear axle with automatic locking differential (ASD) code 211a.
5. 6 -  Measure deceleration values of parking brake on test stand. NOTE: Permissible deviation from the higher value: maximum 50 %.

   If the braking effect of the parking brake is uneven or insufficient: Bed in parking brake according to instructions. See BED IN PARKING BRAKE ACCORDING TO INSTRUCTIONS .

6. 7 -  Measure deceleration values of service brake on test stand. NOTE: Permissible deviation from the higher value: maximum 25 %. The indicator lamps for ABS, ETS, ASR, ESP, SBC may light up in response to an implausible combination of RPM signals from the different rotational speeds at front axle and rear axle, if the brake test stand is operated at > 5 km/h.
NOTE: If one or several indicator lamps for ABS, ETS, ASR, ESP, SBC with the engine running following the test on the brake stand.
7. 8 -  Read fault memory and erase if necessary.

   Connect diagnosis testing equipment. See CONNECT DIAGNOSIS TESTING EQUIPMENT in OVERALL VEHICLE article in GENERAL INFORMATION.