Do you know the common failures of Komatsu excavator engines?

The following article is to solve common engine faults. You also need to know whether the material of the engine is aluminum (here check the aluminum grade) or cast iron.

1. The engine noise becomes louder, the throttle has a loud rumbling sound, and the car body has a noticeable vibration.

Failure analysis: In such a situation, first use a jack to lift the vehicle off the ground, and check whether there are any signs of damage on the bottom guard plate of the engine. If the bottom guard plate is severely bumped, it will be severely deformed and close to the oil pan. In this case, when stepping on the accelerator and accelerating, the bottom guard plate will frequently contact the oil pan, causing noise and causing strong vehicle body vibration. .

Solution: Remove the bottom guard plate of the engine and perform flattening correction and restoration.

2. When the engine oil is consumed a lot.

Failure analysis: When the engine oil is consumed a lot, it is usually because the oil enters the combustion chamber and leaks. The main reason for the oil entering the combustion chamber is that the engine oil pressure is too high or the engine parts have been severely worn and the gap is too large. The oil leakage is caused by the aging of the engine gasket and the stuck valve.

Solution: If this happens, you should contact the repair manufacturer for repair.

3. The engine power is insufficient, there is abnormal noise, and the exhaust pipe emits black smoke.

Fault analysis: This phenomenon is caused by too late ignition and insufficient pressure in the combustion chamber of the machine, resulting in a sudden drop in engine power. The original expanded gas is backfired, causing a loud noise. The incomplete combustion of the gas is mixed with it to produce black smoke.

Solution: If you find a problem, you should contact the repair shop for repair in time.

Fourth, the engine is difficult to start, and there is a strong sense of shock after starting, especially when driving at low speeds.

Fault analysis: According to the description of the problem, it can be roughly judged as a spark plug failure or excessive ignition. Excessive ignition can easily lead to the risk of deflagration in the engine combustion chamber, which will cause severe jitter when the engine runs at medium or low speeds.

Solution: The service life of spark plugs is generally 15,000 kilometers, and the service life of long-lasting spark plugs does not exceed 30,000 kilometers. Although the service life is long, the above-mentioned problems will still occur frequently during the use process, which makes it not really reach the use time. In this case, you must contact a professional after-sales repair and maintenance plant for inspection and maintenance.