R2900 Load Haul Dump Transmission Control Caterpillar


Transmission Control
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1.1. Direction Selection
2.1. Speed Selection

Direction Selection




Illustration 1g00944635

STIC steering machines




Illustration 2g00944636

Wheel steering machines

The direction for STIC steering machines is determined by the position of transmission direction control switch (1) that is located on the STIC steering control lever.

The direction for wheel steering machines is determined by the position of transmission direction and speed control lever (2) that is located on the left side of the steering column.


FORWARD (F) - The machine will move in a forward direction.


NEUTRAL (N) - The machine should not move.


REVERSE (R) - The machine will move in a reverse direction.



Illustration 3g00930298

The transmission direction that is currently in use, F (Forward), N (Neutral) or R (Reverse), is displayed on the instrument panel.

Speed Selection




Illustration 4g00944639

STIC steering machines

The gear speed of STIC steering machines is selected by pushing transmission upshift switch (1) or transmission downshift switch (2). The switches are located on the STIC steering control lever.


Transmission Upshift Switch (1) - Push the transmission upshift switch in order to shift the transmission into the next highest gear speed.


Transmission Downshift Switch (2) - Push the transmission downshift switch in order to shift the transmission into the next lowest gear speed.



Illustration 5g00944641

Wheel steering machines

The gear speed of wheel steering machines is selected by rotating transmission direction and speed control lever (3). The lever is located on the left side of the steering column.


Transmission Direction and Speed Control Lever (3) - Rotate the lever forward or backward in order to increase or decrease the gear speed of the transmission.



Illustration 6g00930298

The transmission has four speeds. The transmission gear speed that is currently in use is displayed on the instrument panel.

1 - First Speed

2 - Second Speed

3 - Third Speed

4 - Fourth Speed (If Equipped)

Note: When the parking brake is engaged, the transmission cannot be shifted into the first gear speed (unless the parking brake drive through feature is activated). For further information on the Parking Brake Drive Through feature, refer to the Operation and Maintenance Manual, "Braking" for the machine that is being serviced.

Note: The transmission can shift automatically or the transmission can shift manually. Refer to the Operation and Maintenance Manual, "Autoshift Control" for the machine that is being serviced.

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