Common models of Carterpillar excavator:
320D, 307D, 336D, 324D, 323DL, 306, 320DGC, 797B, D11T, 336E and other common Carterpillar excavator models.
Carterpillar excavator features:
Carterpillar excavator and other series of excavators compared with: Cat 320D type excavator can be used in mine operation, and his hydraulic pump and engine are all the same, high cost performance, the rough work of the machine can be done well, and the value of the space is relatively large, the price is about 1 million, the disadvantage of this model excavator matching The price of the piece is a little bit expensive.
Cat 320DGC homemade excavator is suitable for earthwork, oil consumption is slightly higher than other excavators, the demand for oil is higher, and the use of oil inspection will lead to the failure of the excavator.
Cat 320D power foot, comfortable operation, fuel consumption has reached about 28 litres / hour.
Mechanical matching is good, hydraulic system is super cattle, action is general, durable, value preservation, use cost is general, force is the first, price market is the first. Fuel consumption is bigger, big arm crack more.
Carterpillar CAT 70 years old American brand. The oil pressure is fierce and vigorous, the action is fierce, the level is average, compares eats the oil, has no obvious shortcoming, exercises.
Carterpillar is also a joint venture brand, is the former Japanese MITSUBISHI machine, then acquired by Caterpillar construction machinery. In recent years, the proportion of domestic parts is also increasing, the quality and structure of the machine's steel quality and structure are well designed, but the oil consumption is high, and the parts are expensive. Most of the provinces in China are doing well, the service is better, but the charge is high.
Common failures in the maintenance of Carterpillar excavator:
The common faults in the Carterpillar excavator are: the excavator oil, the excavator, the excavator, the excavator, the excavator, the excavator, the black smoke of the excavator and the black smoke of the excavator. The running deviation of the excavator (320D type excavator is an example).
Failure phenomenon:
Carterpillar excavator operation appeared in the excavator running deviation phenomenon, the excavator can not work normally.
Carterpillar excavator walking deviation maintenance analysis:
1 when the excavator walking fault is, in general, we can first check the pressure of the hydraulic pump below the excavator, and see whether the pressure of the hydraulic pump on both sides of the excavator is the same.
2, if the pressure is different, it is possible to cause the excavator to run away.
3 in addition, the flow rate of the excavator hydraulic pump is different. It may also lead to the phenomenon of excavator running deviation.
4 if the pressure of the hydraulic pump on both sides of the excavator is not the same, it is necessary to debug, and it should not be adjusted according to experience when debugging, and it is always possible for manual adjustment to have error. All the suggestions are to be adjusted to the hydraulic commissioning table of the professional hydraulic maintenance plant.
5 if check the pressure and flow rate of the hydraulic pump are the same, check the walking pump.
6, or simply check the tightness of the chain plates on both sides of the excavator. The tightness does not always lead to the deviation of the excavator.
Supplement:
Carterpillar excavator maintenance - Common Faults of excavator running deviation:
The tightness of the 1 chain plates is not consistent.
About 2 of the hydraulic pump pressure is not consistent, the flow is not always.
3 failure of the walking pump.
4 the opening pressure of the left and right walking safety valve is inconsistent.
5 the walking motor safety valve leaks oil.
6 fault of walking main valve.
