In the maintenance of the Shanghai-50 tractor supporting diesel engine, if the improper operation or poor maintenance, it is easy to air intake system leakage phenomenon. Experience shows that following the following steps and methods during maintenance can effectively prevent air intake system from leaking. First, install the intake manifold. Due to the small size of the intake manifold gasket, it is easy to leak if improperly assembled. At this time, apply sealant on both sides of the liner. Then install the engine intake rubber hose. At this time, a thin layer of grease should be applied to the inner walls of both ends of the hose. Its function is easy assembly and disassembly, and good sealing. Tighten 2 hose clamps after insertion. Next, install the air cleaner assembly. At this point, it should be checked whether the gasket between the sub-assembly of the housing and the sub-assembly of the oil tank is intact and effective. If necessary, a few strips of adhesive tape may be wrapped around the outer gap of the gasket to strengthen the seal. Finally, a thin sheet of metal is wrapped around the intake rubber hose of the engine. The author found that many diesel engines, the back of the rubber tube, the M8x20 screw on the decompression link seat, due to the rotation of the decompression handle, the rubber tube is often worn out. Grinding is generally not easy to find here, and it is often too late to find out when there are large loopholes. It is better to wrap the iron sheet in advance to prevent it from happening.
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