Cause and maintenance treatment method of sudden extinction of excavator

Fault classification:

1, the excavator work automatically, self extinguishing.

2, the excavator load big stall, hold off.

Excavator extinction reasons:

One, the excavator automatically self extinguishing, common reasons:

1, lack of fuel caused by self extinction.

2, the oil leakage digging machine oil injection pump fault Guizhou excavator.

3, if you have the excavator to stall, the engine speed decreases exhaust smoke, it is likely that machine oil supply is not smooth, the engine lubrication, engine axle bush burning caused.

4, digging machine operation suddenly to flameout, may also be diesel is not clean, that can put the diesel filter change in nozzle correction.

5, if the machine is automatic flameout hot after a short period of time and after flameout excavator are unable to start with, is likely to be a diesel pump (pump) or nozzle, then you can use cold water to flush the diesel pump, if you can immediately name, is a problem of pump or nozzle.

6, engine problems: engine intake resistance, oil resistance caused by self extinction phenomenon.

7, the problem of hydraulic system: pump pressure is too large.

8, digging machine electrical problems: the control system due to receive an error signal, resulting in automatic flameout phenomenon.

Two, the excavator hold off

In general if work stalled digging machine and hold flameout, need to do the following check:

1, the first thing to check is the fuel oil supply machine, check whether smooth? Where there is no obstruction in the circuit? Can clean the fuel filter, replace all filter, dismantling the diesel pump, check the nozzle length can reach about 6~7cm injection.

2, then you need to check whether the excavator engine long time operation, causing the engine overload or overheating of the engine, and start the engine self protection function of Guizhou excavator.

3, hold off digging machine under normal circumstances is the fuel path fault, suggest a careful examination of leaks or leakage of local oil, check the pipe joint seal is damaged, check whether the card lag, check the oil separator drain cover is fastened.

4, hold off can also be a hydraulic problem. Specific hydraulic pump and engine power does not match the cause, this time need to use professional maintenance equipment measurement, debugging valve group to use professional equipment.