No action is one of the common fault phenomena in the process of excavator operation. Usually, the excavator can be started normally, but all actions of the whole vehicle are absent. You must be very impatient at this time. Don't worry. Let's talk about how to troubleshoot and repair the car if it doesn't work.
A Kobelco excavator sk250-8 suddenly appeared that the whole vehicle did not move, and the engine and hydraulic pump operated well without abnormal sound After inspection, the hydraulic oil is enough, the hydraulic pump spindle of the pilot pump is in good operation, the main hydraulic pump is well connected with the engine, and the engine cannot be started when the hydraulic lock is opened. The test lamp at the hydraulic lock valve detects that the voltage is 24V (24V bulb is on), the test lamp at the hydraulic lock solenoid valve detects that the voltage is about 3 and 4 volts (24V test lamp is just red), and the display shows that p1\p2 pressure is 17 and 8kg/cm2 What's the problem? Direct 24V power supply commissioning inspection? "
Basic information of excavator
Equipment brand: Kobelco
Equipment model: sk250-8
Working hours: 12000 hours
Factory life: 2012
Fault analysis:
Check whether the hydraulic lock has pilot pressure oil output and whether the pilot solenoid valve is stuck
Check the safety lock solenoid valve for oil inlet and outlet Check the pilot pump without oil; Check the solenoid valve or circuit if there is incoming oil but not outgoing oil
Repair method for the sudden failure of the whole vehicle of Kobelco sk250-8 excavator:
There is something wrong with the hydraulic lock solenoid valve. After replacing the new part, the phenomenon disappeared and the action returned to normal.
