2010-03-07
A customer from GuizhouKobelco SK230The excavator has a small arm, rotates, and travels slowly. The engine makes a muffled sound, and the speed cannot drop when it is in a fuel-efficient state.
After on-site inspection and after-sales diagnosis, it was found that the B-6 data remained at 5.0V and 3.0M in any state, and the data would not change. By swapping it with the B-5 plug, the B-5 data became 5.0V and 3.0M It is determined that there is an internal fault in the sensor, causing the computer board to believe that the B-6 data is always at full load, so the throttle cannot be lowered at idle, resulting in the E-1 data also becoming at full load (770MA, 3.0M), causing the P1 pump to remain at full load. Even when operating the P2 pump, the working oil entering the P2 pump is relatively small, causing the P2 pump to operate slowly
Solution: After replacing the B-6 sensor, the machine worked normally
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