New Engine and Aftertreatment Software are Now Available for Certain 797F Off-Highway Truck Engines {1920, 7620}
- Off-Highway Truck/Tractor
- 797F (S/N: LTZ1-UP)
The new software has several improvements and new features.
The following changes are now available for the products within the listed serial numbers.
The new software has the following improvements:
- Cat® Electronic Technician (ET) Service Tool features the option to disable or enable the "Add Oil Level" sensor
- Improved fuel priming performance
- Throttle signal filter to reduce engine speed oscillation due to unstable throttle pedal inputs
- Improved engine response during certain transmission shifts
- Corrections to the low oil pressure event thresholds to prevent false event trips of low oil pressure
- 1684-12 Fuel Injection Pump : Failure diagnostic code support for new high-pressure fuel pumps
- Improved software logic for NOx sensors to avoid false trips of low DEF quality events
Note: The new engine software and aftertreatment software must be paired together as a set to ensure proper functionality of all features and improvements.
Table 1 contains the new and previous software part numbers for this change.
Show/hide table
New Part Number | New Part Name | Previous Part Number |
---|---|---|
Engine Software | ||
Engine Software (Aftertreatment) |
The new software is available in the form of a flashfile through the Caterpillar Service Information System (SIS). A newer part number may be available. SIS web only displays the latest available flashfile.
Caterpillar Information System:
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