PM310, PM312 and PM313 Cold Planer Machine 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.

Specifications

Introduction

Varying hydraulic oil temperatures or abnormal vacuum pressure in the hydraulic system may indicate a plugged hydraulic tank breather. Perform this procedure to test the condition of the hydraulic oil breather.

Test Preparation

1. Drive the machine to a smooth, horizontal surface.
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   Illustration 1	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 2	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 3	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 4	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 5	g06228749

10. Ensure that the right side plate and the left side plate are in the float mode. The indicator light under each side plate lower buttons (8) and (9) should be on. If either side plate is locked, push the corresponding side plate button.

11. Place protective material under the rotor to prevent damage to the rotor bits or the work surface.
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    Illustration 6	g06228756

12. Observe level indicator (10). If the indicator shows "0" go to Step 14. If the indicator does not show "0", go to Step 13.
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    Illustration 7	g06228767

13. Use rear leg height switches (11) and (12) to level the rear of the machine. Level indicator (10) will show "0" when the rear of the machine is level.

14. Use front leg lower button (14) and rear leg lower button (13) to lower the machine until the rotor tips touch the protective material.
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    Illustration 8	g06228773

15. 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 (15) to operate the engine in low idle.
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    Illustration 9	g06228779

16. Move engine start switch (16) to the OFF position.
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    Illustration 10	g06228782

17. Lift lock (17) and extend step (18).
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    Illustration 11	g06228784

18. Remove two bolts (20) and washers. Open access panel (19).

Test Procedure

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Illustration 12	g06228789

1. Slowly remove cap (21) from the hydraulic tank. Listen for escaping pressure. The cap is not vented. Replace the cap.

2. If pressure escaped from the tank, go to "Adjustment Procedure".

Adjustment Procedure

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Illustration 13	g06228790

1. Replace breather (22).

2. Close access panel (19). Secure the access panel with two screws (20) and washers.

3. Lift lock (17) and retract step (18).