AP555F Asphalt Paver Propel System Caterpillar

Show/hide table

Engine exhaust contains products of combustion which may be harmful to your health. 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 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

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

Show/hide table

Personal injury or death can result from lifting a heavy component. The heavy component can fall if using an incorrect hoist and/or sling or fastener to lift the load. Be sure the hoist and other devices have the correct lifting capacity to lift a heavy component. The approximate weight of the heavy component is given below.

Specifications

Illustration 1	g06186578

Illustration 2	g06186614

Introduction

Incorrect track alignment can cause premature component wear. Use this procedure to determine if the tracks are properly aligned.

Required Tools

Test Preparation

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

   Illustration 3	g06049382

2. Move propel lever (4) to the NEUTRAL position.

3. Press parking brake switch (3) to change the status of the parking brake to "engaged". When the parking brake status is "engaged", an LED next to the parking brake switch will be illuminated.

4. Use travel mode switch (2) to select the PAVE mode. When the travel mode switch is set to PAVE mode, an LED next to PAVE symbol (1) will be illuminated.

   Note: The machine must be in PAVE mode to operate the screed lift system, hopper system, apron system, and auger lift system.

   Show/hide table

   Illustration 4	g06049390

5. Press the up arrow on screed raise/lower switch (5) to lift the screed. Completely raise the screed.
   Show/hide table

   Illustration 5	g06049394

6. Engage screed service lock mechanism (6) on both sides of the machine.
   Show/hide table

   Illustration 6	g06049400

7. Use screed float switch (8) to place the screed in the FLOAT position. When the screed is in the FLOAT position, an LED next to the screed float switch will illuminate. Allow the tow arms to rest on screed service locks (6).

8. Press rpm decrease switch (9) once to operate the engine in low idle.
   Show/hide table

   Illustration 7	g03862928

9. Shut off the engine. Either place machine power switch (10) in the OFF position or press and hold push to start switch (7) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.

10. If the engine was shut down using the push to start switch (7), move machine power switch (10) to the OFF position.

11. Use a suitable lifting device to raise the machine. For this test the tracks must be off the ground. Use supports adequate for the machine weight. Refer to "Specifications" for approximate machine weights.

Test Procedure

1. Clear all personnel away from the machine except the operator and an assistant. The assistant must remain 1.25 m (4 ft) away from the machine. The assistant must also be in full view of the operator.

2. Move machine power switch (10) to the ON position.

3. Press push to start switch (7) for 2 seconds to start the engine. An LED next to the push to start switch will flash when the engine is in start mode. When the engine has started, the LED will remain illuminated.

   Note: Only one attempt to start the engine is allowed per key cycle. A new key cycle will need to be done to restart the process.

4. Operate the engine at low idle for a few minutes.
   Show/hide table

   Illustration 8	g06187081

5. Press rpm increase switch (12) to place in engine in high idle. The engine speed should be within the range given in the "Specifications" Section.

6. Monitor the hydraulic oil temperature on operator display (11). Operate the machine until the hydraulic oil temperature reaches the range given in the "Specifications" Section.

7. Use travel mode switch (2) to select the travel mode. When the travel mode switch is set to travel mode, an LED next to the travel symbol will be illuminated.

8. Rotate speed dial (13) clockwise until speed value has reached the maximum setting, 11 km/h (6.8 mph).

9. Press parking brake switch (3) to change the status of the parking brake to "disengaged".
   Show/hide table

   Illustration 9	g06187087

10. Squeeze trigger (14), and move propel lever (4) to the FULL FORWARD position.

11. Operate the machine for 5 minutes.

12. Move propel lever (4) to the NEUTRAL position.

13. Rotate speed dial (13) to the MINIMUM position.

14. Press parking brake switch (3) to change the status of the parking brake to "engaged". When the parking brake status is "engaged", an LED next to the parking brake switch will be illuminated.

15. Press rpm decrease switch (9) once to operate the engine in low idle.

16. Shut off the engine. Either place machine power switch (10) in the OFF position or press and hold push to start switch (7) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.
    Show/hide table

    Illustration 10	g06186571

17. Use Tool (A) to measure the temperature of outboard idler (15). Measure the temperature on the face of the idler in the area that the guide blocks of the track meet the idler. Record the difference.

18. Use Tool (A) to measure the temperature of inboard idler (16). Measure the temperature on the face of the idler in the area that the guide blocks of the track meet the idler. Record the difference.

19. Determine the temperature differential between outboard idler (15) and inboard idler (16). Refer to the "Specifications" Section for the target differential temperature. If the temperature is greater than the target differential temperature, go to the "Adjustment Procedure".

Adjustment Procedure

Show/hide table

Illustration 11	g06186578

1. Loosen bolt (17) and bolt (18). Do not remove these bolts.

2. If the temperature of outboard idler (15) was less than the temperature of inboard idler (16), the track roller frame must be adjusted inward. Go to Step 3. If the temperature of the outboard idler is greater than the temperature of the inboard idler, the track roller frame must be adjusted outward. Go to Step 28.
   Show/hide table

   Illustration 12	g06186614

3. Loosen jam nut (21).

4. Loosen adjustment bolt (24) by one half to three fourth turn.

5. Loosen lock nut (22).

   Note: If necessary, remove lock nut (22).

6. Hold adjustment rod (23) and tighten jam nut (20) to move adjustment bar (19) inward.

   Note: Adjustments to the adjustment bar should be made in small increments.

7. Hold jam nut (20) and tighten lock nut (22). Refer to the "Specifications" Section for the proper torque.

8. Tighten adjustment bolt (24) until the bolt contacts the adjustment bar (19).

9. Hold adjustment bolt (24) and tighten lock nut (21). Refer to the "Specifications" Section for the proper torque.

10. Alternately tighten bolt (17) and bolt (18) until tight. Refer to the "Specifications" Section for the proper torque.

11. Move machine power switch (10) to the ON position.

12. Press push to start switch (7) for 2 seconds to start the engine. An LED next to the push to start switch will flash when the engine is in start mode. When the engine has started, the LED will remain illuminated.

    Note: Only one attempt to start the engine is allowed per key cycle. A new key cycle will need to be done to restart the process.

13. Operate the engine at low idle for a few minutes.

14. Press the rpm increase switch (12) to place in engine in high idle. The engine speed should be within the range given in the "Specifications" Section.

15. Monitor the hydraulic oil temperature on operator display (11). Operate the machine until the hydraulic oil temperature reaches the range given in the "Specifications" Section.

16. Use travel mode switch (2) to select the travel mode. When the travel mode switch is set to travel mode, an LED next to the travel symbol will be illuminated.

17. Rotate speed dial (13) clockwise until speed value has reached the maximum setting, 11 km/h (6.8 mph).

18. Press parking brake switch (3) to change the status of the parking brake to "disengaged".

19. Squeeze trigger (14), and move propel lever (4) to the FULL reverse position.

20. Operate the machine for 1 minute, then move propel lever (4) to the neutral position.

21. Move the propel lever in the full forward position for 5 minutes.

22. Move propel lever (4) to the NEUTRAL position.

23. Rotate speed dial (13) to the MINIMUM position.

24. Press parking brake switch (3) to change the status of the parking brake to "engaged". When the parking brake status is "engaged", an LED next to the parking brake switch will be illuminated.

25. Press rpm decrease switch (9) once to operate the engine in low idle.

26. Shut off the engine. Either place machine power switch (10) in the OFF position or press and hold push to start switch (7) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.

27. Go to the "Test Procedure", Step 17 and perform the steps to check the temperature of the idlers again.
    Show/hide table

    Illustration 13	g06186614

    Note: Perform the following steps if the temperature of the outboard idler is greater than the temperature of the inboard idler. The track frame must be adjusted outward.

28. Loosen jam nut (20) on adjustment rod (23) by one half to three fourths turn.

29. Loosen lock nut (21)

30. Tighten adjustment bolt (24) to move adjustment bar (19) outward.

    Note: Adjustments to the adjustment bar should be made in small increments.

31. Hold adjustment bolt (24) and tighten lock nut (21). Refer to the "Specifications" Section for the proper torque.

32. Hold adjustment rod (23) and tighten jam nut (20). Refer to the "Specifications" Section for the proper torque.

33. Alternately tighten bolt (17) and bolt (18) until tight. Refer to the "Specifications" Section for the proper torque.

34. Move machine power switch (10) to the ON position.

35. Press push to start switch (7) for 2 seconds to start the engine. An LED next to the push to start switch will flash when the engine is in start mode. When the engine has started, the LED will remain illuminated.

    Note: Only one attempt to start the engine is allowed per key cycle. A new key cycle will need to be done to restart the process.

36. Operate the engine at low idle for a few minutes.

37. Press rpm increase switch (12) to place in engine in high idle. The engine speed should be within the range given in the "Specifications" Section.

38. Monitor the hydraulic oil temperature on operator display (11). Operate the machine until the hydraulic oil temperature reaches the range given in the "Specifications" Section.

39. Use travel mode switch (2) to select the travel mode. When the travel mode switch is set to travel mode, an LED next to the travel symbol will be illuminated.

40. Rotate speed dial (13) clockwise until speed value has reached the maximum setting, 11 km/h (6.8 mph).

41. Press parking brake switch (3) to change the status of the parking brake to "disengaged".

42. Squeeze trigger (14), and move propel lever (4) to the FULL reverse position.

43. Operate the machine for 1 minute, then move propel lever (4) to the neutral position.

44. Move the propel lever in the full forward position for 5 minutes.

45. Move propel lever (4) to the NEUTRAL position.

46. Rotate speed dial (13) to the MINIMUM position.

47. Press parking brake switch (3) to change the status of the parking brake to "engaged". When the parking brake status is "engaged", an LED next to the parking brake switch will be illuminated.

48. Press rpm decrease switch (9) once to operate the engine in low idle.

49. Shut off the engine. Either place machine power switch (10) in the OFF position or press and hold push to start switch (7) for 3 seconds. An LED next to the push to start switch will flash when the engine is in shutdown mode.

50. Go to the "Test Procedure", Step 17 and perform the steps to check the temperature of the idlers again.

51. Use a suitable lifting device to lower the machine to the ground. Refer to the "Specifications" Section for the approximate machine weight.