Fuel System New Diesel Fuel Injection Pump Head Rotor 1 468 336 614 1468336614 VE Head Rotor for Auto Parts

Excessive fuel pressure is mainly caused by blockage of the diesel passage, improper adjustment or jamming of the pressure limiting valve, and high viscosity of the lubricating fuel. When overhauling a diesel engine, in addition to thoroughly clearing and cleaning the diesel passages, cleaning the filter, replacing the filter element, and assembling the filter discs of the coarse filter, the lubrication system must also carefully inspect and repair the diesel pump. Because the technical status of the lubrication system is often inevitably related to the diesel pump. The function of the diesel pump is to provide a certain pressure and a certain flow of fuel to the lubrication system when the engine is working, forcing the fuel to flow to the friction surface that needs lubrication. Diesel pumps include gear diesel pumps and rotor diesel pumps, and gear diesel pumps are more widely used. The conditions for evaluating the good working performance of the diesel pump are: all moving parts in the pump should rotate flexibly and there should be no jamming; the shaft and the driving gear must be firmly connected and there should be no cracks; the shaft holes of the pump body, pump cover, gear chamber, etc. There should be no casting defects on the machined surface; the assembly should undergo a sealing test, and no diesel leakage is allowed on the joint surfaces installed outside the diesel engine; there should be no leakage on the joint surfaces installed inside; the diesel absorption performance should be good and meet the requirements; in the corresponding When rotating, the volumetric efficiency should meet the requirements. Therefore, before repairing, the diesel pump should be inspected first, and repairs can only be carried out when it is confirmed that the minimum indicators cannot be maintained.