1. Check whether the connecting rod bush, connecting rod bushing and main shaft bearing are worn, strained or burned, whether the connecting rod bolt is loose, and check whether the main oil passage of the air compressor is unclogged; it is recommended to replace the severely worn or strained bearing bush, bushing Sleeve, main bush, tighten connecting rod bolts (torque specification 35-40N.m), align the oil inlet hole of the air compressor with the compressed air oil hole; dredge the main oil passage with air. When reassembling, pay attention to the spindle bearings.
2. Check whether the grooves of the main pulley and the forced pulley are the same. If they are not, please replace them, and adjust the tightness of the belt (press down the belt with your thumb, and the interval between pressing the belt should be 10 mm).
3. Check the oil inlet pressure of the lubricating oil and whether the oil pipeline is damaged or blocked. If the pressure is insufficient, the failed pipeline should be adjusted, sorted out and replaced immediately; Check whether the air compressor is supplied with oil, if there is no oil supply, a comprehensive inspection should be carried out immediately.
4. Check whether the fixing bolts of the air compressor are loose and tighten them.
5. The gear-driven air compressor should also check whether the gears are loose or the cooperation status of the gear device and the gap cooperation status. If the nut is loose, tighten the nut. If there is a problem with the cooperation, it should be replaced.
6. Remove foreign bodies.
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