R2900 Load Haul Dump Machine Operation Information Caterpillar


Machine Operation Information
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1.1. Downhill Operation

Follow these basic instructions whenever you are operating the machine:

  • To prevent injury, make sure that no one is working on the machine or near the machine. Always maintain control of the machine.

  • Raise the bucket or the work tool enough to negotiate any obstacles.

  • Before you disengage the parking brake, depress the service brake pedal in order to keep the machine from moving.

  • Reduce the engine speed when you maneuver in tight quarters and when you are going over a hill.

  • When you drive downhill, use the same gear range that is used for driving uphill. Do not change gears while you travel downhill.

  • Do not allow the engine to overspeed while you travel downhill. Apply the service brake in order to reduce the engine speed.




    Illustration 1g00944975

  1. Frequently observe messages, warnings, alert indicators and gauges (1). All gauges should be at normal operating range. The alert indicators, the action lamp and the action alarm should be off.

  1. Adjust the operator's seat.

  1. Fasten the seat belt.

  1. Raise the bucket approximately 400 mm (15 inch) above the ground.



    Illustration 2g00944984

  1. Depress service brake pedal (3) .

  1. Move parking brake control (2) to the OFF position to disengage the parking brake.



    Illustration 3g00944978

  1. On STIC steering machines, move steering and transmission lock lever (7) to the UNLOCKED position. Move transmission direction control switch (6) to the desired travel direction. Push transmission upshift switch (5) to select the desired speed.



    Illustration 4g00944985

  1. On wheel steering machines, press the left side of switch (9) to release the transmission neutral lock. Move transmission direction control lever (8) to the desired travel direction. Rotate the control to select the desired speed.

  1. Release service brake pedal (3) .

  1. Depress throttle pedal (4) to the desired engine and machine speed.

Downhill Operation

Maintain a ground speed that is slow enough for the conditions. Before you operate the machine down a hill, select the proper gear before you start down the grade. The proper gear should allow the machine to maintain the appropriate speed on the down grade. The throttle control should be at high idle and the engine should not overspeed. In most situations, the proper gear will be the same gear that is required to drive up the grade.

If the machine builds up excessive speed, the engine can overspeed. This can result in damage to the engine. Use the service brake in order to slow the machine until a lower gear can be selected. Select the lower gear and proceed with the throttle control at high idle.

Use the service brakes for stopping the machine. Using the service brakes in order to control the travel speed of the machine or using the service brakes for stopping from high speeds can cause the axle oil to overheat. This will result in significant wear and/or damage to the service brakes and the axle components.

Note: The left pedal should not be used for downhill braking.

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