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How to repair air compressor faults

 1. Radiator blockage: When the environment around the air compressor is dusty, long-term operation can cause a layer of dust or oil stains to adhere to the surface of the radiator. The internal copper pipes are also prone to blockage due to the accumulation of oil stains, thereby affecting the heat dissipation effect. At this time, it is necessary to clean the radiator in a timely manner.

 
2. Failure of the oil cut-off valve: There is an oil cut-off valve between the oil filter and the compressor. When the oil cut-off valve cannot be opened, the temperature of the compressor rises rapidly after starting, and it will automatically stop in about 1 minute. At this point, the bottom access hole of the air compressor should be opened, the oil cut-off valve should be removed, and the valve stem should be gently moved with your fingers to see if it can be pushed back and forth and easily reset. If it is difficult to move or return, further disassembly of the cut-off valve is necessary. If there is oil stains on the valve stem or valve hole, it needs to be polished with fine sandpaper until it can slide easily. If the spring is broken or there are foreign objects, it can also affect the movement of the valve stem. At this time, it is necessary to replace the spring or clean the spring and spring seat.
 
3. Insufficient air pressure
 
When the engine is running and the air compressor is inflating the air storage tank, the pressure gauge indicates that the starting pressure value cannot be reached. The reasons for this situation are: 1. The pressure gauge is malfunctioning, and at this time, simply replace the pressure gauge; 2. The transmission belt between the air compressor and the engine is too loose and slipping, or the pipeline between the air compressor and the air storage tank is broken or the joint is leaking; 3. Blocking due to excessive deposits in oil, pipelines, or air separation; 4. The exhaust valve plate of the air compressor is not tightly sealed, the spring is too soft or broken, the cylinder head bolts of the air compressor are loose, sand holes and cylinder head gaskets are damaged, resulting in air leakage; 5. The cylinder liner, piston, and piston ring of the air compressor are severely worn and leak.