Fault description:
A friend of mine drives a Cat e120b excavator, which has been used for 5000 hours. Every time the excavator works on the construction site, it is unable to dig. Moreover, the walking action of the excavator is a little slow, but it doesn't hold the car. I don't know what's going on?
Causes of failure of Cat e120b excavator due to weak excavation and slow walking:
1. There is a problem with the overflow valve of the excavator.
2. The overflow pressure is too low, resulting in the excavator's inability to dig and walk slowly. 3. The pressure is low, making the excavator boring. 4. Whether the oil supply pipeline is damaged. 5. There is a problem at the connection between the engine and the main pump.
Extended reading:
Possible causes of slow walking failure of Carter excavator:
1. There may be a problem with the hydraulic oil filter element and the pilot filter element
2. The internal wear and leakage of the motor increases and the efficiency decreases; Gear wear of reduction mechanism will lead to weak walking or slow speed.
3. Hydraulic pump failure
4. Excavator circuit problem.
5. There is a problem with the pilot pressure.
6. The servo piston is stuck.
7. Distributor problem
