Note:
Calibration of the level sensor should be performed when:
Any of the level sensors has been changed.
Work has been performed on the level sensor.
The control unit has been changed.
Test prerequisites:
The parking brake must be released.
Pressure in the primary tank.
The operating button on the control box must be in position "MAN1".
The wheels must be chocked.
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.
Note: During calibration the vehicle will be raised quickly to check that the level sensors have got the correct polarities.
Procedure:
Make sure that the vehicle is not loaded.
Applies to all trucks with bogies.
Put the bogie switch in position 2, 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
Chassis height-standard
4x2/6x2=330mm
6x4=330mm
6x4/8x4 Rigid, CTN372, VT2014OD/VT2514OD=355mm
Chassis height-900 mm
295mm
Chassis height-850/810 mm
216mm
Drive axle, generation 1
Chassis height-standard
4x2=337mm
6x2 Pusher, tag=337mm
6x4/8x4 Tractor, SRED-V=337mm
6x4/8x4 Tractor, HRED-V=361mm
6x4/8x4 Rigid CTN372, VT2014OD/VT2514OD=385mm
6x4/8x4 Rigid, other=361mm
Chassis height-900 mm
4x2 Tractor=287mm
6x2 Tractor, pusher=287mm
6x2 Rigid=287mm
Chassis height-850 mm
4x2 Rigid=241mm
6x2 Rigid=241mm
Chassis height-810 mm
4x2 Tractor=241mm
Drive axle, generation 2
Chassis height-standard
4x2 Tractor=331mm
Chassis height-900 mm
4x2 Tractor=277mm
Note: Always place the spacers on both the front axle and the drive axle, irrespective of wich level sensor has been replaced.
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.