34 00 012 Parking brake function check

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IMPORTANT: Follow instructions for BRAKE TESTING ON TEST STAND .

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.