1. Before installing the cross shaft universal coupling, clean the two ends and check the fit of the key grooves on the end face, and then tighten the screws so that they are not allowed to loosen; 2. After the cross shaft universal coupling is installed, it is normal When running a shift, all the fastening screws must be checked. If they are found to be loose, they must be tightened again with the specified tightening torque. Repeat this for several shifts to ensure that they will not loosen; 3. The sliding surface of the cross shaft universal coupling, the cross Heads, bearings, etc. must be lubricated. Generally, use 2# industrial lithium-based grease or 2# molybdenum disulfide calcium-based grease. Under normal conditions, run continuously for 500 hours and refuel once, and run intermittently once for 2 months. If working under high temperature conditions The oil must be refueled once a week. When refueling, unscrew the oil hole screw on the bearing end surface and inject it with a high-pressure oil gun until it overflows; 4. Cross-shaft universal couplings are generally used for 3 months and must be maintained once, if indentation is found Wait for normal wear and tear, and replace it in time;