Common faults of excavators

excavator2months agoExcavator maintenance32

Common faults of excavators

example 1. Red, green and red [abnormal power source or controller] is displayed (all lights are open)

Example 2. Red, green and red [short circuit of speed control motor] is displayed

Example 3. Red, green and red [Battery Relay Abnormal] is displayed

Example 4. Red, green and red [Disconnection of speed control motor] is displayed

Example 5. Red, green and red [speed potentiometer abnormal] is displayed

Example 6. Red, green and red [fuel control panel abnormal] is displayed

Example 7. Engine won't start

Example 8. Uneven engine speed or insufficient power output

Example 9. Engine won't start

Example 10. Automatic heating work is not perfect

Example 11. The speed of working device, walking and turning are all slow

Example 12. The engine speed drops too much or the engine stops rotating

Example 13. The working device, walking, turning does not move or the speed is low

Example 14. Work equipment, walking, and turntable are weak

Example 15. Produce abnormal noise

Example 16. Boom and stick speeds are too low when walking, turning and bucket speeds are normal

Example 17. Low speed of working devices (boom, stick, bucket)

Example 18. When the boom and stick are operated at the same time, the boom is slow

Example 19. Work equipment (boom, bucket, stick) is weak

Example 20. Time delay is too large

Example 21. When the stick and swing are operated at the same time, the stick is slow

Example 22. When the machine is walking, it naturally shifts to one side

Example 23. Severe deviation in compound operation, if walking alone is normal

Example 24. Severe deviation at the beginning

Example 25. The machine cannot be moved (only one side)

Example 26. Can't turn around

Example 27. Low rotation speed or poor acceleration ability

Example 28. When stopping turning, excessive overtravel

Example 29. When stopping turning, excessive shock

Example 30. When the rotation is stopped, the abnormal noise is serious

Example 31. When the start switch is turned to "on" for 3 seconds, the monitor dial light does not light up

Example 32. When the start switch is turned to "Tong" road (engine stop), the inspection item is flashing (the liquid level in the inspection item reaches the specified value)

Example 33. When the start switch is turned to "Tong" road (the "Attention" item flashes when the engine stops

Example 34. When the start switch is turned to "Tong" road (engine stop), the "inspection item is flashing" ("inspection" item or there is no abnormal phenomenon in the engine)

35. When the start switch is turned to "Tong" road (engine stop), the "Attention" item flashes for 1 second, but the buzzer does not sound

Example 36. Cooling thermometer system failure

Example 37. The cooling temperature gauge does not show

Example 38. Fuel level sensor failure

Example 39. Before troubleshooting, check for fuel

Example 40. Work light does not light up

Example 41. Even if the light switch is not operated, the light is on

Example 42. The wiper does not work

Example 43. Even when the wiper switch is operated, the wiper works

Example 44. The fan is not working

Example 45. Even when the wiper switch is not operated, the wiper works

Example 46. The heating operation will not start when the temperature is below 30℃, and the heating operation will not be released above 30℃.

Example 47. Rotating faults

Example 48. Fuel level sensor system failure

Example 49. Cooling temperature sensor system failure

Example 50. Coolant level sensor system failure

Example 51. The fuel lever did not return to the stop position, but the engine stopped

Example 52. When the joystick is fully loaded, it is weak and the working device is slow

Example 53. Abnormal switching electromagnetic system for walking

Example 54. Swing parking brake solenoid valve system is abnormal

Example 55. Swing parking brake electromagnetic system working conditions (swing can not be locked)

Example 56. PPC oil pressure lock electromagnetic system is abnormal

Example 57. Engine starting system is abnormal (engine does not start)

Example 58. All working devices, walking, slow rotation speed or weakness

Example 59. The engine speed drops too much or the engine stalls

Example 60. All working devices, walking, and slewing are not moving

Example 61. Produce abnormal noise (from around the pump)

Example 62. Poor fine-tuning performance or poor reactivity

Example 63. Boom speed is low or weak

Example 64. Stick speed is low or weak

Example 65. Slow bucket action or weakness

Example 66. The working device (boom, bucket, stick) does not move (but walking and turning) are normal

Example 67. Excessive natural drop (boom, stick, bucket)

Example 68. The stick or bucket is naturally lowered too much

Example 69. Too much time lag (low engine speed)

Example 70. When the working device overflows alone, other working devices also move

Example 71. Walking deviation (large deviation during normal walking, large deviation during starting)

Example 72. Low walking speed

Example 73. Inability to steer or weakness

Example 74. Can't walk (only one side)

Example 75. Can't switch walking speed

Example 76. Can not turn (left and right at the same time, only one side)

Example 77. When only one side does not rotate

Example 78. Poor slewing acceleration or slow slewing speed (left and right at the same time, only one side)

Example 79. Large overtravel during slewing braking (left and right at the same time, only one side)

Example 80. Unusually noisy when turning and braking

Example 81. Rotation will drop naturally

Example 82. When the swing brake is released (rotation lock is OFF)

Example 83. When the start switch is turned on, there is no display (no self-check for 3 seconds)

Example 84. The start switch is turned on, and there are items that are not lit during the self-check (all lights are on for 3 seconds)

Example 85. When the power is turned on (before the engine is started), the "Notes for Charging Use" light is off

Example 86. When the power is turned on (before the engine is started), the "Notes on Use of Engine Oil Pressure" light is off.

Example 87. The preheat indicator is not on during preheating

Example 88. The switch operation was performed, but the "swing lock" light did not light up

Example 89. The "Notes on Use of Engine Oil Pressure" light is on when the engine is running (when the engine oil pressure is normal)

Example 90. Engine water temperature gauge is abnormal

Example 91. Abnormal fuel gauge

Example 92. Buzzer malfunction

Example 93. When the engine is rotating, the detection instrument does not move

Example 94. "Night lighting" does not light up

Example 95. The wiper does not move or does not stop moving

Example 96. Heater does not work

Example 97. The engine does not start (the engine does not rotate)

Example 98. Engine stalls during operation

Example 99. The engine speed is irregular or oscillating

Example 100. Engine does not stall


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