Assembly steps of the oil pump in the LPG tanker truck
The oil pump is one of the most important parts of a LPG tanker truck. The power of the LPG tanker truck comes from the power generated by the engine and then transmitted to it through the power take-off.
The oil pump then causes the diesel in the pipeline to flow, and the free pumping in and out of the tanker realizes the fuel in and out of the tanker. From this we can see the importance of the oil pump on the tank truck, so how should the oil pump be assembled?
The first step is to assemble the oil pump shaft and impeller of the fuel truck. The end face of the impeller hole should be 0.10-0.50mm (referring to the oil pump fixed with bolts on the impeller) so that it can be compressed. Then install the gasket, tighten the fixing bolts, install the oil seal assembly, and lock it with a pin circle.
Then put the oil pump impeller into the oil pump casing, put a rear bearing lock ring on one end of the shaft, and then install the rear bearing, spacer sleeve and front bearing into the pump casing in turn (some oil pump bearings are integral, then Put the integral bearing into the pump casing), and recheck the fit, and finally install the lock ring.
After the above is completed, install the V-belt hub on the front end of the pump shaft and tighten it with bolts, then install the V-belt pulley and fan blades, tighten them with nuts, and then lock them with an open lock (or lock plate) by hand.
The next step is to install the oil pump cover and gasket (some oil pumps do not have a cover). A gap of 0.17-0.75mm is required between the impeller and the cover plate (if there is no cover plate, the impeller and the front wall of the cylinder are required).
Secondly, after installing the oil pump V belt wheel, the swing difference measured in the groove should not exceed 1.0mm. The general experience is: when the impeller is moved, the pin has a feeling of clearance.
Finally, the oil pump should be tested before loading. The empirical method is: turn the V-belt wheel by hand, there should be no jamming phenomenon, block the water inlet of the pump casing, then add water to the impeller working chamber, rotate the pump shaft, and there should be no water leakage from the inspection hole. If there is jamming and water leakage, find out the cause and eliminate it.
After completing the above steps, the installation of the oil pump is basically completed, and qualified users can also install the oil pump on the test bench for operation, inspection and troubleshooting. After installation, some lubricant should be added to ensure the smooth operation of the oil pump without jamming!
