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Troubleshooting and Repair of Cylinders
1. Fault judgment
Observation: Observe whether the cylinder action is slow and whether the action speed is uniform. Check the cylinders working in pairs to see if the work is consistent.
Test: First, unplug the cylinder to drive the air pipe, trigger the corresponding action, and see if there is compressed air blowing out of the air pipe. If there is air, there is a problem with the cylinder. If there is no air, there is a problem with the solenoid valve.
2. Maintenance
After it is judged that the cylinder is faulty, it needs to be repaired. Common maintenance tools include fine sandpaper of 1500# or more, circlip pliers, white oil (white solid grease for cylinder), and corresponding sealing rings.
After the cylinder is removed, first determine the fault location, first pull the cylinder rod by hand, and feel if there is any jamming; if there is no jamming phenomenon, block the air hole on one side by hand, and then pull the cylinder rod. If it cannot be moved back to its original position, the air seal is leaking.
If the cylinder rod is pulled, it is generally caused by the lack of lubrication inside the cylinder or the accumulation of a large amount of sludge. Disassemble the cylinder, clean it with oil or water, and wipe it with a cloth. If it is washed with water, it must be dried and observed. Whether there are scratches in the cylinder rod and cylinder, and whether the sealing ring is worn. If there are scratches, it needs to be polished with fine sandpaper, and the sealing ring needs to be replaced. Then add white oil as a built-in lubricant and reassemble. After installation, first pull the cylinder back and forth several times by hand to spread the white oil evenly in the cylinder, then ventilate the two air nozzles separately, let the air cylinder move several times quickly, and squeeze out the excess grease from the other air nozzle.
If the cylinder or cylinder rod is severely scratched or the cylinder rod is bent, you should buy a new cylinder as soon as possible, because if the scratches are deep or the cylinder rod is bent, even if the new seal is replaced, it will be worn out quickly.
It is forbidden to add ordinary machinery butter or oil as built-in lubricant in the cylinder!
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