There are also "nobles" in the loader. For example: Caterpillar CAT950E wheel loader is a product of the United States in the early 1990s. Its engine is a 3304 Caterpillar engine, which has weak power and low failure rate.It is suitable for various engineering constructions. Because this model is relatively rare in China and faces obsolete models. Therefore, it is difficult to purchase loader parts of this model. It is generally necessary to order abroad, the purchase cycle is long, and the price is expensive. The following small series introduces the two parts of this model Modified repair methods.
1. Modification of exhaust gas turbocharger
The turbocharger of the loader parts. The technical conditions are: the power and load are appropriate for the machine, the shape and size are similar, and the number of modified machined parts is minimized. The load on the car is smaller than the construction machinery, so the turbocharger on the car is not considered, Therefore, a turbocharger used on the roller was selected, and its power and load were suitable for the machine; the shape and scale of the exhaust gas inlet of the turbocharger were the same; the shape and scale of the inlet and return oil pipes were also the same; If it is bigger, you can use a hose instead; the connection port of the turbocharger and the muffler is different from the original machine.It is necessary to machine a pipe clamp to connect the turbocharger and the muffler to solve the problem. Simple, shorten the fault handling cycle.
2. Modification of air compressor (air pump)
The entire wheel loader braking system relies on an air compressor (air pump) installed on the engine to provide air source control, but the air compressor (air pump) operates under high temperature and high pressure for a long time.The cylinder liner, piston, piston ring, The capacity of the intake and exhaust valves is easy to wear, making the machine unable to compress the gas, difficult to compress, and severe oil consumption.It is necessary to repair the air compressor (air pump).
According to the measurement of the original air compressor (air pump), the cylinder diameter is 86㎜, the piston ring is two air rings and two oil rings; It is understood that the cylinder diameter of the Jiefang brand car is 87㎜, and the piston ring is also two air rings and two channels Oil ring. So the diameter of the original cylinder diameter can be boring to 87mm, and the Jiefang brand piston and piston ring are selected. The Jiefang brand piston pin is smaller than the original machine piston pin, and the piston pin hole can be machined according to the original piston pin diameter. .
