CB13, CB15 and CB16 Asphalt Compactor Machine 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

Injury to personnel can result if they are not in the operator's view. Allow only essential personnel near the machine, and make sure the personnel are in the operator's view when testing, to prevent injury. Make sure checks are done in an open area.

Show/hide table

To prevent injury or death, never work under a machine while a test is being performed.

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.

Specifications

Introduction

The main relief valves protect the vibratory hydraulic system from spikes in pressure that could damage hydraulic components. This procedure provides a method to test the function of the main relief valves. If necessary, this procedure also provides the method to adjust the relief cartridge.

Required Tools

Illustration 1	g06204647

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

2. Connect each Tool (A3) to each Tool (A1).

Illustration 2	g03852926

1. Connect each Tool (C) to each Tool (B).

Illustration 3	g06252678

1. Connect Tool (E2) and Tool (E3) to Tool (E1). Connect Tool (E2) to the USB port on Tool (D).

Reference: Special Instruction, REHS7696, "Software Installation Instructions of the Plus+1 ^TM Service Tool for Caterpillar (P1STC) is Available for Caterpillar Paving Products".

Test Preparation

Note: Park the machine on soft dirt or place tires under the drums. Alternately, the machine can be lifted onto jacks, and the machine drums may be supported by air bags. Refer to the "Specifications" section for the approximate weight of the machine.

Note: Verify that the charge relief valve is within specification prior to performing this procedure. Refer to Systems Operation, Testing and Adjusting, "Relief Valve (Charge) -Test and Adjust".

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

   Illustration 4	g06250503

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

3. Move parking brake switch (2) to the ON position.

4. Place the engine in ECO mode or in low idle.
   Show/hide table

   Illustration 5	g06250549

   1. Select "Main Menu" (3) on the machine display.

   2. Select "Machine Setup" (4).
      Show/hide table

      Illustration 6	g06250567

   3. Select "Engine Spd Sw" (5)
      Show/hide table

      Illustration 7	g06250569

   4. Select "ECO" (7) or "Low" (6).

      Note: Shutting down the engine in high idle may damage engine components

   Show/hide table

   Illustration 8	g06250571

5. Move engine start switch (8) to the OFF position.
   Show/hide table

   Illustration 9	g06250575

6. Unlock latch (9) and open engine compartment door (10) on the right side of the machine.
   Show/hide table

   Illustration 10	g06251278
   Rear propulsion motor

   Show/hide table

   Illustration 11	g06251283
   Front propulsion motor

7. Disconnect brake supply hose assembly (11) at both propel final drives. Use Tool (G) to plug the hose assembly. Use Tool (F) to cap the port.
   Show/hide table

   Illustration 12	g06251287

8. Connect Tool (A2) to port "Ma" (12) on the right side of the machine.

   Note: If testing the front vibratory pump, connect Tool (A2) to port "Md" (13) on the right side of the machine.

   Show/hide table

   Illustration 13	g06251291

9. Connect other Tool (A2) to port "Mb" (14) on the vibratory pump.

   Note: If testing the front vibratory pump, connect Tool (A2) to port "Mc" (15) on the vibratory pump.

   Show/hide table

   Illustration 14	g06251303

10. Connect Tool (E3) to diagnostic connector (16).

Test Procedure

1. Move engine start switch (8) to the START position. Release the switch when the engine starts.

2. Place the engine in high idle.
   Show/hide table

   Illustration 15	g06251321

3. Monitor hydraulic oil temperature (17) on the operator display. Operate the machine until the oil temperature reaches the test temperature given in the "Specifications" section.
   Show/hide table

   Illustration 16	g06251323

4. If necessary, use drum select switch (18) to select both drums.

   Note: Two things indicate when the machine is in both drums mode. First, "Vibe Drum Select Dual" will appear on the display. Second, both LEDs next to drum select switch (18) will be illuminated.

5. Set the vibratory system in the manual mode.
   Show/hide table

   Illustration 17	g06251342

   1. Select "Main Menu" (19) on the machine display.

   2. Select "Machine Setup" (20).
      Show/hide table

      Illustration 18	g06251349

   3. Select "Vibe Turn On Speed" (21).
      Show/hide table

      Illustration 19	g06251350

   4. Select "Manual" mode (22).
   Show/hide table

   Illustration 20	g06251351

6. Use vibratory frequency switch (23) to set the vibratory system in the low frequency/high amplitude mode on both drums.

   Note: Two things indicate when the vibratory system is in the low frequency/high amplitude mode. First, "Vibratory Frequency Mode Low" will appear on the display. Second, the bottom LED next to vibratory frequency switch (23) will be illuminated.

7. Launch the "Plus+1 Service Tool for Caterpillar" program on the computer and follow the instructions displayed for communication.
   Show/hide table

   Illustration 21	g06251352

8. Click "Status" icon (24).

9. Check "Active SPNs" (26). Clear any open "Active SPNs".

10. Click "Machine Control" (25).
    Show/hide table

    Illustration 22	g06251674

11. Click "Hydraulics" (27).

12. Click "Vibe Test Mode" (28).
    Show/hide table

    Illustration 23	g06254869

13. Click "Enable" icon (29) to enable the "Normal Vibe Test Mode".

14. Click "Enable" icon (30) to enable the "Fast Ramp Vibe Test Mode".
    Show/hide table

    Illustration 24	g06254888
    Propel control lever with two buttons

    Show/hide table

    Illustration 25	g06254891
    Propel control lever with six buttons

15. Press vibratory control switch (31) on propel control lever (1). The vibratory control switch must be held in the ON position for at least 2 seconds for the vibratory system to activate.

16. Watch pressure on Tool (A1). High pressure will register on the gauge connected to port "Mb" (14). An initial pressure reading will register on the gauge for a brief period, and then the pressure reduces to operating pressure. Record the initial pressure reading as the high amplitude relief pressure. Refer to the "Specifications" section for the high amplitude relief pressure.

    Note: If testing the front vibratory pump, high pressure will register on the gauge connected to port "Md" (13).

    Note: The force that is needed to overcome the inertia of the weights causes the pressure in the vibration system to momentarily reach the relief valve setting. This pressure spike should be the initial pressure reading.

17. Use vibratory control switch (31) to shut off the vibratory system.

18. Use vibratory frequency switch (23) to place the drums in the high frequency/low amplitude mode.

    Note: Two things indicate when the vibratory system is in the high frequency/low amplitude mode. First, "Vibe Frequency Mode High" will appear on the display. Second, two of the LEDs next to vibratory frequency switch (23) will be illuminated.

19. Press vibratory control switch (31) on the propel control lever. The vibratory control switch must be held in the ON position for at least 2 seconds for the vibratory system to activate.

20. Watch the pressure on Tool (A1). High pressure will register on the gauge connected to port "Ma" (12). An initial pressure reading will register on the gauge for a brief period, and then the pressure reduces to operating pressure. Record the initial pressure reading as the low amplitude relief pressure. Refer to the "Specifications" section for the low amplitude relief pressure.

    Note: If testing the front vibratory pump, high pressure will register on the gauge connected to port "Mc" (15).

    Note: The force that is needed to overcome the inertia of the weights causes the pressure in the vibration system to momentarily reach the relief valve setting. This pressure spike should be the initial pressure reading.

21. Use vibratory control switch (31) to stop the vibratory system.

22. Place the engine in ECO mode or in low idle.

23. Move parking brake switch (2) to the ON position.

24. Move engine start switch (8) to the OFF position.

25. If the pressures are within the specified range, go to the next step. If the pressures are outside the specified range, perform the adjustment procedure.

26. Remove both sets of Tool (A) from the vibratory pump.

27. Remove Tool (G) from brake supply hose assembly (11) at both drum propel final drives. Remove Tool (F) from the brake inlet port at both drum propel final drives. Connect the brake supply hose to the brake inlet ports on the propel final drives.

28. Remove tooling from diagnostic connector (16).

29. Close engine compartment door (10) on the right side of machine and secure latch (9).

Adjustment Procedure

1. Clean or replace the relief valve that is out of specification.
   Show/hide table

   Illustration 26	g06254894

   Show/hide table

   Illustration 27	g06254897
   (32) Relief valve cartridge "B" (33) Relief valve cartridge "C" (34) Relief valve cartridge "A" (35) Relief valve cartridge "D"

2. The relief valve cartridges for the front drum are relief valve cartridge "C" (33) and "D" (35). The relief valve cartridges for the rear drum are relief valve cartridge "A" (34) and "B" (32).

3. Perform the test procedure.