Temperature increases in the converter oil as well as overheated brakes will be the consequences to be find out later. Neutral position of the selector switch at higher machine speeds (above stepping speed) is not admissible. Either a suitable gear is to be shifted immediately, or the machine must be stopped at once. (4) Independent calibration of the shifting elements Independent calibration of the shifting elements (AEB) The AEB has the task to compensate tolerances (plate clearance and pressure level) which are influencing the filling procedure of the clutches. For each clutch, the correct filling parameters are determined in one test cycle for :
В Period of the quick-filling time В Level of the filling compensating pressure The filling parameters are stored, together with the AEB-program and the driving program in the transmission electronics. Because the electronics will be separately supplied, the AEB-cycle must be started only after the installation of both components in the machine, thus ensuring the correct mating (Transmission and electronics). It is imperative, to respect the following test conditions :
- Shifting position neutral - Engine in idling speed - Parking brake actuated - Transmission in operating temperature ц ц After a replacement of the transmission, the electrohydraulic control or the TCU in the machine, the AEB-cycle must be as well carried out again. The AEB-cycle continues for about 3 to 4 minutes. The determined filling parameters are stored in the EEProm of the electronics. In this way, the error message F6 shown on the display will be cancelled also at non-performed AEB. (5) Pressure cut-off Pressure cut-off In order to provide the full engine power for the hydraulic system, the control can be enlarged for the function of a pressure cut-off in the 1st and 2nd speed.
In this way, the pressure in the powershift clutches will be cut-off, and the torque transmission in the drive train will be eliminated by it. This function will be released at the actuation of a switch, arranged on the brake pedal. For a soft restart, the pressure will be build-up via a freely programmable characteristic line. 3-18