2004/11/08 Caterpillar


New Engine Software Corrects Warnings of Air Filter Inlet Air Restriction {7620}

Usage:

725 AFX
Articulated Truck:
725 (S/N: AFX1-1097)
730 (S/N: AGF1-1010)
735 (S/N: AWR1-624)
740 (S/N: AXM1-1376)
740 EJECTOR (S/N: AZZ1-339)

New engine software is available for the listed machines. The new engine software corrects the handling of warnings of air filter inlet restriction. The new engine software is listed in Table 1.

When the new engine software has been flashed in the engine ECM, the inlet and atmospheric pressure sensors need to be calibrated. The pressure sensors only need to be calibrated once. Perform the following steps in order to calibrate the pressure sensors.

  1. After the new engine software has been flashed to the engine ECM, turn the engine start switch to the OFF position for 30 seconds. (This ensures that the engine ECM has reset.)

  1. Turn the engine start switch to the ON position for 6 seconds.

After the procedure has been completed, the machine can be started and operated as normal.

Table 1
Model     New Engine Software    
725 S/N:AFX1-1097     256-8797 Engine Ratings Electronic Software    
730 S/N:AGF1-1010     256-8798 Engine Ratings Electronic Software    
735 S/N:AWR1-624     256-8799 Engine Ratings Electronic Software    
740 S/N:AXM1-1376     256-8800 Engine Ratings Electronic Software    
740 EJECTOR S/N:AZZ1-339    

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