The cause of automatic extinguishing of excavator

The more common flameout problem in the construction process is basically around the following three situations, the first is a very common automatic flameout in the work, the second is the machine flameout after working for a period of time, the third is more serious, may just start the car after a few minutes automatically flameout, and even repeatedly start repeatedly will flameout, resulting in the entire engine to suffer!

Then the above several cases, the cause of the failure is mostly in the engine fuel system, the owner of the machine as long as the focus on checking the fuel system can follow the lead to solve the problem. Fault phenomenon ▊ but there are several kinds of automatic flameout fault phenomenon, quite tricky, there have been many maintenance masters are helpless, let’s take a look!

This problem is believed to have been encountered by many friends, that is, the entire starting circuit is detected to work normally, the test is started, although there are signs of fire, the engine can not start.
The hand oil pump can pump oil normally, but the oil comes out with air at the same time, when the air is discharged and the machine is started, the engine will automatically turn off after about ten minutes of operation.
Check that the filter on the fuel hand pump is smooth, and there is no blockage problem, but the machine will still fail for no reason.
Replace the fuel filter and fill it with oil, start the excavator after exhaust, and the fault still exists without any improvement.
There is always air in the fuel pump oil circuit, and the air is repeatedly eliminated but cannot be completely drained.
Compared with the above several fault situations, if everyone’s love machine meets, then the first thing to check is whether the location of the high and low pressure pipeline interface has oil leakage problems, if there is no oil leakage problem after a close inspection, then focus on checking the interface rubber pad above the filter element.

We must not underestimate this rubber pad, if after a long time of use, because of thermal expansion and contraction and other reasons, the rubber pad will be aging, deformation and other problems because of the material, if not disassembled inspection, it is difficult to find such a secret fault point.
Because the probability of the problem is very large, many friends want to know whether there is no trouble, with the naked eye can quickly detect whether the rubber pad has oil leakage problem?

Don’t worry, the old driver gives you a trick, dip in the water after the dilution of dishwashing liquid, smear in the interface to be checked, if you find that there are bubbles repeatedly bulge, then enough to show that the part of the leakage problem! In addition, there is a reference to the use of time, if the machine construction more than 2 years, then the probability of leakage in the fuel system, such as rubber MATS, is very high, in order to avoid unnecessary valuation situation, we can refer to the time in advance to replace a batch of quality assurance rubber MATS, a few cents can avoid starting difficulties, automatic flame failure!

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