PM310, PM312 and PM313 Cold Planer Propel Systems Caterpillar

Show/hide table

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.

Show/hide table

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.

Show/hide table

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.

Show/hide table

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.

Specification

Introduction

This test indicates the condition of the propel motors and flushing valves. Perform this test if machine cannot reach full speed or if the hydraulic system is overheating.

Required Tools

Illustration 1	g06043724

1. Apply Tool (G) to the pipe thread on each Tool (A).

2. Install one Tool (A) in each end of Tool (B).

3. Install one Tool (C) to the outlet end of Tool (B).

4. Install one Tool (E) on one end of Tool (F).

5. Install one Tool (D) on the other end of Tool (F).

6. Connect Tool (D) to Tool (C) in the outlet side of Tool (B).

Test Preparation

1. Drive the machine to a smooth, horizontal surface.
   Show/hide table

   Illustration 2	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.
   Show/hide table

   Illustration 3	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.
   Show/hide table

   Illustration 4	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.
   Show/hide table

   Illustration 5	g06228737

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

9. Use propel lever (1) to center the front tracks.
   Show/hide table

   Illustration 6	g06229856

10. Press and hold front legs raise button (10) and rear legs raise button (9). Release the buttons when the machine stops rising. Do not allow the front of the machine to reach service height. Service height indicator (8) is illuminated when the machine is at service height.
    Show/hide table

    Illustration 7	g06229858

11. 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.
    Show/hide table

    Illustration 8	g06229156

12. Move engine start switch (12) to the OFF position.
    Show/hide table

    Illustration 9	g06229860

13. Unhook latch (13). Open compartment door (14) under the instrument panel.
    Show/hide table

    Illustration 10	g06229862

14. Loosen lock wheel (16), and rotate needle valve (15) clockwise to close the valve.

15. Chock the wheels or tracks.

16. Install the tooling on the motor that is being tested.

Tooling Installation (Right Front Motor)

Show/hide table

Illustration 11	g06229863

1. Disconnect case drain hose (17) from port "C1" (18) of the front propel manifold.

   Note: Case drain hose (17) is connected to port "T2" of the propel motor.

2. Connect the inlet side of the flowmeter to case drain hose (17).

3. Connect Tool (E) on the outlet side of the flowmeter to port "C1" (18).
   Show/hide table

   Illustration 12	g06229864

4. Disconnect case drain hose (20) from bulkhead connector (19).

   Note: Case drain hose (20) is connected to port "T1" of the propel motor.

5. Use Tool (H) to plug case drain hose (20). Use Tool (J) to cap bulkhead connector (19).

Tooling Installation (Left Front Motor)

Show/hide table

Illustration 13	g06230519

1. Disconnect case drain hose (21) from port "C" (22) of the front propel manifold.

   Note: Case drain hose (21) is connected to port "T2" of the propel motor.

2. Connect the inlet side of the flowmeter to case drain hose (21).

3. Connect Tool (E) on the outlet side of the flowmeter to port "C" (22).
   Show/hide table

   Illustration 14	g06230523

4. Disconnect case drain hose (23) from bulkhead connector (19).

   Note: Case drain hose (23) is connected to port "T1" of the propel motor.

5. Use Tool (H) to plug case drain hose (23). Use Tool (J) to cap bulkhead connector (19).

Tooling Installation (Right Rear Motor)

Show/hide table

Illustration 15	g06230531

1. Disconnect case drain hose (25) from bulkhead connector (24).

   Note: Case drain hose (25) is connected to port "T2" of the propel motor.

2. Connect the inlet side of the flowmeter to case drain hose (25).

3. Connect Tool (E) on the outlet side of the flowmeter to bulkhead connector (24).
   Show/hide table

   Illustration 16	g06230540

4. Disconnect case drain hose (27) from bulkhead connector (26).

   Note: Case drain hose (27) is connected to port "T1" of the propel motor.

5. Use Tool (H) to plug case drain hose (27). Use Tool (J) to cap bulkhead connector (26).

Tooling Installation (Left Rear Motor)

Show/hide table

Illustration 17	g06230548

1. Disconnect case drain hose (28) from bulkhead connector (29).

   Note: Case drain hose (28) is connected to port "T2" of the propel motor.

2. Connect the inlet side of the flowmeter to case drain hose (28).

3. Connect Tool (E) on the outlet side of the flowmeter to bulkhead connector (29).
   Show/hide table

   Illustration 18	g06230583

4. Disconnect case drain hose (30) from port "T1" (31) of the propel motor.

5. Use Tool (H) to plug case drain hose (30). Use Tool (J) to cap port "T1" (31) of the propel motor.

Test Procedure

1. Move engine start switch (12) to the START position. Release the switch when the engine starts.
   Show/hide table

   Illustration 19	g06230589

2. Use travel mode button (32) 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.
   Show/hide table

   Illustration 20	g06230594

4. Monitor hydraulic oil temperature (33) on the operator display. Operate the machine until the oil temperature reaches the test temperature listed in the "Specification" section.

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

   Show/hide table

   Illustration 21	g06230598

5. Press interlock button (34) and move propel lever (1) into the forward range. Release the propel lever.

6. Have an assistant record the flow rate shown on Tool (B) as "Case Flow".

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

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

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

10. Perform this step based on the motor being tested.

    1. If the right front motor is being tested, remove Tool (H) from case drain hose (20). Remove Tool (J) from bulkhead connector (19). Connect case drain hose (20) to the bulkhead connector.

    2. If the left front motor is being tested, remove Tool (H) from case drain hose (23). Remove Tool (J) from bulkhead connector (19). Connect case drain hose (23) to the bulkhead connector.

    3. If the right rear motor is being tested, remove Tool (H) from case drain hose (27). Remove Tool (J) from bulkhead connector (26). Connect case drain hose (27) to the bulkhead connector.

    4. If the left rear motor is being tested, remove Tool (H) case drain hose (30). Remove Tool (J) from port "T1" (31) of the propel motor. Connect case drain hose (30) to port "T1"of the propel motor.

11. Move engine start switch (12) to the START position. Release the switch when the engine starts.

12. Use travel mode button (32) to set the machine to roading mode. The indicator next to the button illuminates when the machine is in the roading mode.

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

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

14. Press interlock button (34) and move propel lever (1) into the forward range. Release the propel lever.

15. Have an assistant record the flow rate shown on Tool (B) as"Forward Total Flow".

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

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

17. Press interlock button (34) and move propel lever (1) into the reverse range. Release the propel lever.

18. Have an assistant record the flow rate shown on Tool (B) as"Reverse Total Flow".

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

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

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

22. Analyze the recorded flow rates. Refer to the "Specification" section. Interpret the results as follows:

    • If the case drain flow is greater than the specified range, the motor has excessive internal leakage. Repair or replace the motor.

    • If both the forward flushing flow and the reverse flushing flow are outside the specified range, repair or replace the flushing relief valve.

    • If either the forward flushing flow or the reverse flushing flow is outside the specified range, repair or replace the flushing spool.

23. Perform this step based on the motor being tested.

    1. If the right front motor is being tested, disconnect the outlet side of the flowmeter from port "C1" (18) of the front propel manifold. Disconnect case drain hose (17) from the inlet side of the flowmeter. Connect case drain hose (20) to port "C1" (18) of the front propel manifold.

    2. If the left front motor is being tested, disconnect the outlet side of the flowmeter from port "C" (22) of the front propel manifold. Disconnect case drain hose (21) from the inlet side of the flowmeter. Connect case drain hose (21) to port "C" (22) of the front propel manifold.

    3. If the right rear motor is being tested, disconnect the outlet side of the flowmeter from bulkhead connector (24). Disconnect case drain hose (25) from the inlet side of the flowmeter. Connect case drain hose (25) to bulkhead connector (24).

    4. If the left rear motor is being tested, disconnect the outlet side of the flowmeter from bulkhead connector (29). Disconnect case drain hose (28) from the inlet side of the flowmeter. Connect case drain hose (28) to bulkhead connector (29).

24. Rotate needle valve (15) counterclockwise to open the valve. Tighten lock wheel (16).

25. Close compartment door (14) under the instrument panel. Secure the door with latch (13).