2014/04/08 Caterpillar


New Brake Software Is Now Used on Certain 793F, 795F, and 797F Off-Highway Trucks {4250, 7620}

Usage:

793F AC EMD
Off-Highway Truck/Tractor:
793FSeries AC (S/N: EMD1-UP)
793F (S/N: SND1-UP; SSP1-UP)
795FSeries AC (S/N: ERM1-UP)
795F (S/N: SNT1-UP)
797F (S/N: LAJ1-UP; WSP1-UP)

Description of Change: New Brake Software is now used on certain machines that are listed above. The new Brake software contains improvements that are listed below:

  • Improvements to the ARC setpoints for 793F, and 797F. These improvements will adjust the ARC setpoint, regardless of the ARC Switch Position, to reduce the vibration levels in the lower Power Train.

- Throttle Pedal NOT Depressed - The ARC Protect Point = 1950 RPM

- Throttle Pedal IS Depressed - The ARC Protect Point = 2075 RPM

  • Improvements to the Final Drive Temperature Signal Filtering and Event strategy.

- Will reduce speed limiting, and logging of Cold Final Drive oil Events.

Adaptable To: The new 459-1812 Machine Software Gp (Brake Software) is a direct replacement for the existing 453-9156 Machine Software Gp. The new software part number is listed in Table 1.

Table 1
New Brake Software    
New Part Number     Part Name     Description     Former Part Number    
459-1812     Machine Software Gp     Brake Software     453-9156    

Note: Go to SIS Web to make sure that the new flash file part number is still the latest flash file part number. A newer flash file part number may be available. SIS only displays the latest available flash file.The new software is adaptable to and is effective in production with the serial numbers that are listed in Table 2.

Table 2
New Brake Software    
Sales Model     Adaptable Serial Numbers     Effective Serial Numbers    
793F     S/N:SSP1-1019     S/N:SSP1020-UP    
793F AC     S/N:EMD1-77     S/N:EMD78-UP    
793F XQ     S/N:SND1-131     S/N:SND132-UP    
795F AC     S/N:ERM1-289     S/N:ERM290-UP    
795F XQ     S/N:SNT1-1     S/N:SNT2-UP    
797F     S/N:LAJ1-519     S/N:LAJ520-UP    
797F XQ     S/N:WSP1-129     S/N:WSP130-UP    

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