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 can result from rotating and moving parts. Stay clear of all rotating and moving parts. Never attempt adjustments while the machine is moving or the engine is running unless otherwise specified. The machine must be parked on a level surface and the engine stopped. Attach a "Do Not Operate" or similar warning tag to the start switch and controls before servicing, repairing, or making adjustments to the machine.

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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 hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

Specifications

Illustration 1	g06229731

Required Tools

Illustration 2	g06204647

1. Connect one Tool (A2) to each Tool (A3).

2. Connect both Tools (A3) to Tool (A1).

Test Preparation

1. Drive the machine to a smooth, horizontal surface.
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   Illustration 3	g06228671

2. 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.

3. 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 4	g06228685

4. 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.

5. 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.

6. 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 5	g06228728

7. 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 6	g06228737

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

9. Use propel lever (1) to center the front tracks.
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   Illustration 7	g06229133

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

11. 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 9	g06229152

12. Ensure that the engine is operating in low idle. The high idle indicator light should be off. If this indicator is illuminated, press throttle control button (11) to operate the engine in low idle.
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    Illustration 10	g06229156

13. Move engine start switch (12) to the OFF position.
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    Illustration 11	g06229157

14. Unhook latch (13). Open left compartment door (14), and install the door prop.
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    Illustration 12	g06229182

15. Remove cap (16), and connect one Tool (A2) to the pressure tap in port "MB" (15).
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    Illustration 13	g06282174

16. Remove cap (17), and connect one Tool (A2) to the pressure tap in port "MA" (18).
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    Illustration 14	g06229195

17. Unhook latch (19). Open compartment door (20) under the instrument panel.
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    Illustration 15	g06229206

18. Loosen lock wheel (22), and rotate needle valve (21) clockwise to close the valve.

19. Chock the wheels or tracks.

Test Procedure

1. Move engine start switch (12) to the START position. Release the switch when the engine starts.
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   Illustration 16	g06229217

2. Use travel mode button (23) to set the machine to roading mode. The indicator next to the button illuminates when the machine is in the roading mode.

3. Use throttle control button (11) to operate the engine in high idle.
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   Illustration 17	g06229227

4. Monitor the hydraulic oil temperature on operator display (24). Operate the machine until the oil temperature reaches the test temperature listed in the "Specifications" section.
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   Illustration 18	g06229257

   Note: If the machine moves during the next steps, immediately return the machine to neutral. Repair the brakes before this test is continued.

5. Press interlock button (25), and slowly move propel lever (1) into the FULL FORWARD position.

6. Allow the pressure to stabilize. Read the pressure shown on Tool (A) at port "MB" (15).

7. Move propel lever (1) into the FULL REVERSE position to place the machine in neutral. Release the propel lever.

8. Press interlock button (25), and slowly move propel lever (1) into the FULL REVERSE position.

9. Allow the pressure to stabilize. Read the pressure shown on Tool (A) at port "MA" (18).

10. Move propel lever (1) into the FULL FORWARD position to place the machine in neutral. Release the propel lever.

11. Use throttle control button (11) to operate the engine in low idle.

12. Move engine start switch (12) to the OFF position.

13. Compare the recorded pressure readings to the pressure specifications listed in the "Specifications" section. If either pressure reading is outside the specified range, perform the "Adjustment Procedure". If both pressure readings are inside the specified range, go to the next step.

14. Rotate needle valve (21) counterclockwise to open the valve. Tighten lock wheel (22).

15. Close compartment door (20) under the instrument panel. Secure the door with latch (19).

16. Remove one Tool (A2) from the pressure tap in port "MB" (15) and Install cap (16) on the pressure tap.

17. Remove one Tool (A2) from the pressure tap in port "MA" (18) and Install cap (17) on the pressure tap.

18. Place the door prop in the stored position and close left compartment door (14). Secure latch (13).

Adjustment Procedure

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Illustration 19	g06229729
(26) Forward relief valve (27) Reverse relief valve

1. Locate the relief valve to be adjusted. Relief valve (26) is the forward relief valve. Relief valve (27) is the reverse relief valve.
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   Illustration 20	g06229731

2. Hold adjustment screw (29) in place and loosen lock nut (28).

3. If the pressure is too low, turn adjustment screw (29) clockwise. If pressure is too high, turn the adjustment screw counterclockwise.

   Note: Refer to the "Specifications" section for the change in pressure per revolution of adjustment screw (29).

4. Hold adjustment screw (29) in place, and tighten lock nut (28) to the torque given in the "Specifications" section.

5. Perform the "Test Procedure".