1. Air intrusion
2. The sealing ring of the hydraulic cylinder is too tight or loose
3. The piston rod is different from the piston
4. Pistons are full or local bending
5. The installation position of the hydraulic cylinder shifts
6. Poor straight linear inner holes in the hydraulic cylinder (drum -shaped taper, etc.)
7. Corrosion and hair in the cylinder
8. The two ends of the dual -piston rod are twisted too tightly to make it poorly concentric
Solution
1. Add exhaust device; if there is no exhaust device, you can drive the hydraulic system to move the working components quickly with the maximum itinerary, forcing the air to exclude the air
2. Adjust the sealing ring so that it is not tight or loose, and ensure that the piston rod can be pulled back and forth smoothly without leakage (mostly allowed trace oil seepage)
3. Correction two concentricity
4. Straight piston rod
5. Check the parallelism and correction of the hydraulic cylinder and the guide rail
6. Millet repair, rewriting the piston
7. Those who are mild to remove rust and burrs, severe cases must be grinded
8. The snail should not be tightened too tightly. Generally, it can be tightened by hand to keep the piston rod in a natural state impact.
Wuhan Hitorck Industrial Equipment Co.,Ltd，www.hitorck.com
Focus on bolting system with quality hydraulic tools andprofessional bolting solutions to the world classcustomer service.