What's going on with the hydraulic wire clamps?
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Why do hydraulic wire clamps keep having problems? What are the common failures? How should I deal with them?
Just replace the O-ring on the hydraulic plunger head. Very small.
After studying* After understanding the common faults and treatment methods, we will summarize them as follows. 1. The large and small piston is leaking oil and the sealing rubber ring is worn. Replace the sealing ring. 2. The large piston stroke is advancing and retreating because the steel ball seal of the oil delivery valve is poor and there is air in the oil storage tank. The following treatment should be done. A. Remove the clamp head, take out the big piston and the big spring, remove the oil delivery valve, clean the spring steel balls, and then reassemble. B. Fill the oil first and then exhaust. When refueling, remove the fixed handle, unscrew the oil storage valve end screw, and take out the oil storage valve. Shake the handle to press a small amount of the originally stored oil into the piston cylinder, then add oil to the end face of the cylinder, install the oil storage valve, open the oil return bolt, let the remaining oil escape from the screw hole, remove the air in the memory, tighten the screws, and replace the handle. 3. The large piston cannot return to its original position. Because the spring is deformed or damaged, replace the spring. If it is caused by air in the oil storage valve, the air should be removed according to the refueling method.