Note:
Calibration of the level sensor should be performed when:
Any of the level sensors have been changed.
Work has been performed on the level sensor.
The control unit has been changed.
Test prerequisites:
The parking brake must be released.
The primary tank pressure must exceed 800 kPa.
The operating button on the control box must be in position "MAN1".
The wheels must be blocked.
The vehicle must be unloaded.
Ensure that there is no-one under the vehicle.
Check that the control rods are secured between the level sensors and axles.
Procedure:
Make sure that the vehicle is not loaded.
Only applies to 6x2: Lower the trailing wheel axle and set the bogie switch in centre position.
Adjust any fault codes.
Block the weels and release the parking brake.
Start the engine and fill the system up with compressed air until the compressor releases pressure.
Raise the vehicle with the control box.
Position spacers according to picturers below.
Front axle
Drive axle
Note: Always place the spacers on both the front axle and the drive axle, irrespective of wich level sensor has been replaced.
Distance rear = 307 mm
Distance front = 270 mm
Lower the vehicle onto the spacers with the control box, without draining the air bellows.
Calibration shall be performed with the control box operating button in the upper position, "MAN1".
Perform calibration.
Turn off ECS and remove the spacers.
Note: During calibration the vehicle will be raised quickly to check that the level sensors have got the correct polarities.