PM310, PM312 and PM313 Cold Planer Propel Systems Caterpillar

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Diesel engine exhaust contains products of combustion which may cause personal injury. Always start and operate the engine in a well ventilated area, and, if in an enclosed area, vent the exhaust to the outside.

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Personal injury or death can result from sudden machine movement. Sudden movement of the machine can cause injury to persons on or near the machine. To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.

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Personal injury can result from rotating and moving parts. Moving fan blades and moving parts will throw or cut any object or tool that falls or is pushed into them. Make sure no one is working on, underneath or close to an engine that is running. Make sure the area is free of personnel.

Specifications

Introduction

Use this test to determine if the machine speed is correct. Incorrect machine speed may indicate a problem in the propel system.

Required Tools

Test Preparation

1. Establish a 30.5 m (100 ft) straight speed-test course.

   Note: The overall test area must be large enough to allow the machine to reach full speed before the machine passes the starting line. The overall test area must also be large enough to allow the machine to be stopped after the machine passes the finish line.

2. Drive the machine to the test area.
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   Illustration 1	g06228671

3. Move propel lever (1) into the maximum position opposite of the direction of travel. The farther the lever is moved, the faster the machine will stop. Release the lever.

4. Verify that the parking brake is engaged by checking parking brake indicator (2). The parking brake should activate automatically when the machine is stopped. If the parking brake is not active, use propel lever (1) to stop the machine completely.
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   Illustration 2	g06228685

5. Ensure that the conveyor system is deactivated. The indicator light next to the button should be off. If the conveyor system is operating, push conveyor drive on/off button (5) to deactivate.

6. Ensure that the water spray system is deactivated. The indicator light next to the button should be off. If the water spray system is operating, push water spray button (3) to deactivate.

7. Ensure that the vacuum dust control system, if equipped, is deactivated. The indicator light next to the button should be off. If the vacuum dust control system is operating, push vacuum dust control button (4) to deactivate.
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   Illustration 3	g06228728

8. Ensure that the rotor system is deactivated. Indicator light next to the button should be off. If the rotor system is operating, push rotor button (6) to deactivate.
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   Illustration 4	g06228737

9. Use conveyor buttons (7) to center the conveyor.

10. Use propel lever (1) to center the front tracks.
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    Illustration 5	g06229133

11. Observe level indicator (8). If the indicator shows "0" go to Step 14. If the indicator does not show "0", go to Step 12.
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    Illustration 6	g06229150

12. Use rear leg height switches (9) and (10) to level the rear of the machine. Level indicator (8) will show "0" when the rear of the machine is level. Make sure that the rotor does not contact the ground during this step.
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    Illustration 7	g06229742

13. Use travel mode button (11) to set the machine to roading mode. The indicator next to the button illuminates when the machine is in the roading mode.
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    Illustration 8	g06229744

14. Use throttle control button (12) to operate the engine in high idle.
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    Illustration 9	g06229777

15. Monitor hydraulic oil temperature (13) on the operator display. Operate the machine until the oil temperature reaches the test temperature listed in the "Specifications" section.

Test Procedure

1. Back up the machine far enough to reach full speed before the start line.
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   Illustration 10	g06229780

2. Press interlock button (14) on propel lever (1) to activate propel system. Move the propel lever to the full forward position to accelerate the machine. Hold the lever in the full forward position.

   Note: The parking brake will release automatically.

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   Illustration 11	g06229846

3. Monitor machine speed (15) on the display. The indicated machine speed will increase until maximum propel speed is achieved. Refer to the "Specifications" section for the maximum propel speed.

   Note: When maximum speed is achieved, the propel lever can be returned to the center position. Machine speed should remain constant.

4. Use Tool (A) to time the machine through the 30.5 m (100 ft) course. Refer to the "Specifications" section to determine the time required for the machine to complete the course.

5. Move propel lever (1) to the full reverse position to decelerate the machine. When the machine has come to a stop, release the propel lever.

   Note: The parking brake should engage automatically. An indicator next to the propel lever will illuminate.

6. Repeat the test in reverse.

7. Drive the machine to a smooth, horizontal surface.

8. Move propel lever (1) to the NEUTRAL position.

   Note: The parking brake should engage automatically. An indicator next to the propel lever will illuminate.

9. Use travel mode button (11) to set the machine to working mode. The indicator light next to the button should be off when the machine is in the working mode.

10. Back up the machine far enough to reach full speed before the start line.
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    Illustration 12	g06229780

11. Press interlock button (14) on propel lever (1) to activate propel system. Move the propel lever to the full forward position to accelerate the machine. Hold the lever in the full forward position.

    Note: The parking brake will release automatically.

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    Illustration 13	g06229846

12. Monitor machine speed (15) on the display. The indicated machine speed will increase until maximum propel speed is achieved. Refer to the "Specifications" section for the maximum propel speed.

    Note: When maximum speed is achieved, the propel lever can be returned to the center position. Machine speed should remain constant.

13. Use Tool (A) to time the machine through the 30.5 m (100 ft) course. Refer to the "Specifications" section to determine the time required for the machine to complete the course.

14. Move propel lever (1) to the full reverse position to decelerate the machine. When the machine has come to a stop, release the propel lever.

    Note: The parking brake should engage automatically. An indicator next to the propel lever will illuminate.

15. Repeat the test in reverse.

16. Drive the machine to a smooth, horizontal surface.

17. Move propel lever (1) to the NEUTRAL position.

    Note: The parking brake should engage automatically. An indicator next to the propel lever will illuminate.

18. Use throttle control button (12) to operate the engine in low idle. The high idle indicator light should be off.
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    Illustration 14	g06229848

19. Move engine start switch (16) to the OFF position.

20. If the travel speed is outside the specified range, possible troubleshooting procedures include:

    • Perform the pressure tests on the propel pump.

    • Test the case drain flow on the propel motors.

    • Calibrate the propel pump thresholds.