Fault description:
A friend of mine drove the Caterpillar E120B excavator, which is now used for 5000 hours. The excavator appears weak every time it works on the construction site and the excavator moves a little slowly but does not hold back the vehicle. I do n’t know how to go back. thing?
Caterpillar E120B excavator is unable to walk slowly due to failure:
1. There is a problem with the relief valve of the excavator.
2. The overflow pressure is too low to cause the excavator to dig weakly, walking slowly 3 The pressure is low, making the excavator work weak 4 Whether the oil supply line is damaged 5 The problem of the connection between the engine and the main pump.
Extended reading:
Carter excavator walking slow failure possible reasons:
1. There may be a problem with the hydraulic oil filter element and the pilot filter element
2. Increased internal wear and leakage of the motor and reduced efficiency; worn gears of the reduction mechanism will cause weak walking or slow speed.
3. The hydraulic pump is malfunctioning.
4. Excavator circuit problem.
5. There is a problem with the pilot pressure.
6. The servo piston is stuck.
7. Distributor problem.
