What causes the reverse spool end of a hydraulic cylinder to stick?
1. Check installation drawings. 2. Check parts and drawings. 3. Reverse spool end for end. CYLINDERS TROUBLE CAUSE REMEDY ERRATIC ACTION 1. Valves sticking or binding 2. Cylinder sticking or binding 3. Sluggish operation during warm-up period 4. Pilot control pressure too low 5. Internal leakage in cylinder 6. Air in system 1.
What causes the stick slip effect in hydraulic fluid?
As 7 A 1 As 8 A 1. hydraulic fluid dirty 2. hydraulic fluid foams 1. Stick-slip effect due to the friction of the cylinder packings being too high. 2.
What makes a hydraulic CYL stuck on a truck?
Air mixed with oil will make the cylinder action spongy but won’t lock it up. 2) If the cylinder is a single port type then it relies on the weight of the load (truck bed in this case) to retract the cylinder after the pilot valve is shifted to the retract position.
What to do if your hydraulic system fails?
1. Drain and flush system. Disassemble and clean, if necessary. 2. Small fittings or pipe. 3. Check pilot pressure system. 4. Check for proper source voltage and frequency. Remove solenoid and check fields. 5. Align body and piping to remove strains. VALVE SPOOL FAILS TO MOVE 1. Dirt in system 2. Blocked drain 3. Pilot pressure off 4.
As 7 A 1 As 8 A 1. hydraulic fluid dirty 2. hydraulic fluid foams 1. Stick-slip effect due to the friction of the cylinder packings being too high. 2.
1. Check installation drawings. 2. Check parts and drawings. 3. Reverse spool end for end. CYLINDERS TROUBLE CAUSE REMEDY ERRATIC ACTION 1. Valves sticking or binding 2. Cylinder sticking or binding 3. Sluggish operation during warm-up period 4. Pilot control pressure too low 5. Internal leakage in cylinder 6. Air in system 1.
Can a clogged intake line cause a hydraulic failure?
In extreme cases, cavitation can cause mechanical failure of system components. While cavitation can occur just about anywhere within a hydraulic circuit, it commonly occurs at the pump. A clogged inlet strainer or restricted intake line will cause the fluid in the intake line to vaporize.
What are the symptoms of a hydraulic system problem?
A reduction in machine performance is often the first indication that there is something wrong with a hydraulic system. This usually manifests itself in longer cycle times or slow operation. It is important to remember that in a hydraulic system, flow determines actuator speed and response. Therefore, a loss of speed indicates a loss of flow.