4A - INFORMATION CENTER
21C SERIE WHEEL LOADERS TRAINING MANUAL PROGRAMMING THE INFORMATION CENTER Testing the Park Brake The operator can test the park brake by using the diagnostics built into the information center. The transmission must be in 3rd gear manual mode to perform the test. If the transmission is left in any other gear during the test the transmission will be disconnected from the engine. To perform the test use the following procedure: 1 2 3 4 5 6 7 8
Up count
Down count
Program
Reset
Start the machine. Make sure the transmission selector switch is in 3rd neutral, the automatic switch is in the manual position,and the park brake switch is on. Select the display field number 011 using the programming entry procedure listed previously. Press the up count switch once so the display reads 01. Shift the transmission selector into 3rd forward and slowly increase the engine RPM's. The park brake should hold the machine at full throttle. Reduce the engine RPMís and shift the machine into neutral. Press the reset switch to exit the test mode. Turn off the machine.
If the park brake does not hold the machine at full throttle refer to the brakes section of this manual for troubleshooting procedures. Transmission Clutch Calibration The 21 C series wheel loaders have the ability to adjust the clutch modulation between shifts to allow for smooth shifting between gears. This procedure should be done after the first 250 hours of operation and after every 1000 hours of operation after that. For more information on why and how this occurs refer to the transmission section of this manual. 5th digit
4th digit
3rd digit
2 nddigit
1st digit
Before adjusting the clutch calibration it is important to understand how the controller communicates to you while the calibration is taking place. In the main instrument cluster display window there are five digits that will be displayed to the operator. They are numbered 1 - 5 starting at the left with the 5th position and continuing to the right with the 1st position. The calibration Main Code status will be displayed in the 3rd and 4th spaces and the 1st and 2nd digits will display the calibration ìSub Codeî The calibration Main Code will inform you where the machine is in the process of calibration, or where the machine was in the process when the calibration was aborted due to a malfunction. The calibration Sub Code will inform you why the process was aborted. The meanings of the Main and Sub Codes are listed in the following tables The 5th digit shows 2 during calibration process.
Centre de formation
4A.13.00
