Name: China Engine Spare Parts Cummins Engine Piston Kit 3093031 3800363 Cummins QST30 3093031 3800363 Factory - Good Price - Kyson
Brand: Kyson
SKU: 235872450

Chongqing Kyson Machinery Equipment Co., Ltd. is one of the leading manufacturers and suppliers of engine spare parts cummins engine piston kit 3093031 3800363 cummins qst30 3093031 3800363 in China. With abundant experience, our factory offer high quality products made in China with competitive price. Welcome to place an order.

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Desc.	Engine Piston Kit	Part No	3092113 3093032 3093031 3800363
Brand Name	Cummins, Detroit, DCEC, CCEC, XCEC etc.	Other parts	pls contact freely if you need other P/N
Engine Type	Diesel engine, Gas engine, Diesel Generator, Marine engine, Construction engine Pump engine etc.	Spare Type	Wearing spare parts, maintenance tools, repair kit, upper and lower engine gasket kit.
Condition:	Original and brand new	Applicatble industriy	Retail, marine engines, Construction works, Energy & Mining etc
Key Word:	Original spare parts and engine repair tool kits	Trade terms	FOB EXW CIF DDU DDP, Door to door is available in some countries.
Delivery time:	Most parts are in stock, bulk order based on qty	Payment	T/T, L/C, D/A, Alipay, Western Union, Paypal etc.
Place of origin	China/USA/Japan/Austria/Mexico	Package	Neutral or original packaging
Product Introduction	With the continuous increase of diesel engine output power, the thermal and mechanical stresses borne by the piston also increase accordingly, leading to cracking and erosion of the surrounding walls of the combustion chamber at the piston top. Due to the effective improvement of the heat resistance of the aluminum piston top surface by the hard oxidized oxide film, it has an extremely good inhibitory effect on thermal cracking, especially on the tendency of thermal cracking at the combustion chamber edge of direct injection diesel engines. Therefore, high-power pistons generally need to undergo anodizing treatment. judge During vehicle operation, some parts of the engine may experience abnormal piston knocking sounds. The abnormal sound of the piston knocking on the cylinder occurs in the upper part of the cylinder, which is a rhythmic "click" sound similar to hitting the cement floor with a small hammer. When the engine is idling, the sound is obvious and clear. Especially when the engine is running at low temperatures, the sound is noticeable, and as the temperature increases, the sound decreases or even disappears. The judgment method for piston knocking on the cylinder: (1) Cut off oil cylinder by cylinder. The method of cutting off oil cylinder by cylinder is adopted to determine the position of cylinder knocking. If the oil is cut off to a certain cylinder, the sound significantly decreases or disappears, but when the oil supply is restored, a clear "click" sound can be heard, indicating that the piston of the cylinder is knocking. (2) To further confirm that the piston of the cylinder is knocking, the fuel injector of the cylinder can be removed, and a small amount of CD grade turbocharged oil can be added to the cylinder (for sealing purposes). Then, the fuel injector can be installed and the engine can be started. The knocking sound disappears or weakens, and after running for a while, the knocking sound reappears, indicating that the piston of the cylinder is knocking. The main reasons for piston knocking are as follows: (1) The gap between the piston and the cylinder wall is too large. The standard clearance between the piston skirt and cylinder of WD615 series engines is 0.143-0.182, and the maximum wear limit is 0.35-0.40. (2) After running the engine for a period of time, the cylinder piston wears out, coupled with poor lubrication, the clearance between the piston and the cylinder increases due to wear, and a serious step appears slightly below the first air ring, causing the piston to make a strange noise when hitting the cylinder. (3) After running for a period of time, the piston skirt and cylinder wear severely, causing severe out of roundness and knocking of the cylinder. (4) Individual connecting rods may deform due to various reasons, causing piston wear and increased clearance, resulting in cylinder knocking. Knocking the cylinder with a piston can lead to excessive fuel consumption, engine oil leakage, high oil consumption, and poor fuel efficiency. When the piston strikes the cylinder severely, it can also break the piston, damage the cylinder, and cause the connecting rod to break, damaging the cylinder block. handle The following methods can be used to deal with piston knocking: (1) After starting the engine, there is a knocking sound when running at low temperatures. After the temperature is normal, the sound disappears and can be left untreated and continued to run. (2) When the engine temperature is normal, there is a noticeable knocking sound, and high-speed operation should be avoided as much as possible. Disassemble and repair as soon as possible. (3) After removing the cylinder head and removing the piston, if it is found that the cylinder is severely out of round, pulled, or the gap between the piston and the cylinder is too large, it should be replaced by replacing the cylinder liner, piston, and piston rings. (4) If deformation of the connecting rod is found, it should be replaced as much as possible. Assembly of piston connecting rod assembly The key points for assembling the piston connecting rod assembly of diesel generators are as follows: 1, Press fit the connecting rod copper sleeve. When installing the copper sleeve of the connecting rod, it is best to use a press or a vise, and avoid using a hammer to strike fiercely; The oil holes or grooves on the copper sleeve should be aligned with the oil holes on the connecting rod to ensure lubrication. 2, Assemble the piston and connecting rod. When assembling pistons and connecting rods, attention should be paid to their relative positions and directions. 3, Cleverly install the piston pin. The piston pin and pin hole are in an interference fit. When installing, the piston should be evenly heated to 90 ℃~100 ℃ in water or engine oil. After removal, the pull rod should be placed in an appropriate position between the piston pin seat holes. Then, the piston pin coated with engine oil should be installed into the piston pin hole and connecting rod copper sleeve in the predetermined direction. 4, Installation of piston rings. When installing piston rings, pay attention to the position and sequence of each ring. 5, Install the connecting rod assembly.

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