Parking Brake System: Testing and Inspection

34 00 012 Parking brake function check







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 handbrake.
Braking with locked wheels must be possible with the handbrake.
The handbrake must be readjusted if the actuation stroke is greater than 6 teeth.







NOTE:
The handbrake can only be adjusted correctly when the parking brake Bowden cables and all moving handbrake parts are free to move and fully operational.
Basic handbrake adjustment is necessary:
- In event of excessive actuation stroke (6 teeth).
- When replacing parking brake Bowden cables
- When replacing handbrake lever.