SHAFT 9T3384 - Caterpillar

Illustration 1 g01248178
Note: The shifter communicates with the engine and the transmission via the CAN Data Link. The shifting ability of the transmission is limited when the communication between the engine and the transmission is disrupted. If the transmission is not able to shift above the first forward gear for a TH31 or the second forward gear for a TH35, check all of the J1939 connections for proper mating.Well Service Work-over Rig Operation
The ECU will use the position of the selector switch to determine the "active" shifter and will ignore the other shifter. The ECU will also run a different shift schedule based on the active shifter. The shifter in the cab must be configured by the wiring of the location code in order to be the primary shifter. For the shifter in the cab, the ECU will automatically shift the transmission up and down based on output speed. The shifter on the deck must be configured by location code wiring to be the secondary shifter. For the shifter on the deck, the ECU will function in a power shift mode, shifting into whatever gear is selected. The ECU will not shift into reverse when using the deck shifter. The shifter will display two alpha-numeric codes. The display on the left is desired gear and the display on the right is actual gear. Both shifters will display the information for the