1 remove the oil drain switch at the bottom of the oil tank, then wash it repeatedly with clean oil, and then flush the inside of the oil tank with a larger air pump. With clean oil, you can return a relatively clean oil tank several times
2. The bottom of the oil tank is opened Rinse with oil In and out of the wheel
3. Most excavators have a flange at the bottom of the oil tank. Remove the flange after discharging the diesel oil. Be careful not to damage the sealing ring. Then you can reach into the oil tank, remove the sludge and sediment, wipe dry and clean it, install it in the reverse direction, and pay attention to check whether there is leakage when refuelling.
What if the Kobelco excavator suddenly stalls and cannot be started?
1 check whether there is air inlet in the oil circuit
2 if the engine suddenly stalls and does not start during work, and the starter cannot be pulled, it is likely that the bushing is burnt
3 if the engine oil or diesel oil fails to meet the driving standard, it will suddenly shut down Of course, the first two are standard enough, and the biggest possibility is that there is something wrong with the starting circuit
E-16 it is difficult to start the engine at low temperature (in cold weather or cold areas, it is difficult to start or not start the engine even after preheating)
① Relevant MC fault code: None
② As shown in figure 6-223, check the measurement of glow plug voltage and resistance. Check whether the current is sent to the glow plug. Check whether the glow plug is abnormal.
③ The preheating system works only when the coolant temperature is lower than 10 ℃. When the coolant temperature is higher than 10 ℃, the preheating system does not work.
Troubleshooting:
1 disconnect the connector of the coolant temperature sensor. Check whether the voltage of the glow plug is 20-24v.
2. If it is within this range, it is a sensor fault.
3 if not during this period, disconnect the connector in the ECM. Connect the #4 terminal of the connector cable to the machine. Check whether the fault is solved. If it is solved, it is the ECM fault.
4 if it is not solved, measure the resistance of the backup glow plug and disconnect the connector in the glow plug relay. Check whether the voltage at the #1 and #3 terminals of the connector wire end in the glow plug relay is 20 ~ 24V.
5 if it is not between here, if the voltage of #1 terminal is ov, the harness between glow plug relay and battery is open circuit. If the voltage of the #3 terminal is ov, the harness between the glow plug relay and the M terminal in the keyswitch is open circuit.
6 if between, the connection in the glow plug relay will be connected. Connect the #4 terminal connecting the harness end to the machine. Check whether the voltage of the glow plug is 20 -24v.
7 if not, the glow plug is faulty. The glow plug relay is faulty, or the wire between the glow plug relay and the glow plug is faulty. If yes, there is an open circuit in the harness between the glow plug relay and the ECM.
