Contain information about :
Troubleshooting, General Troubleshooting Charts, Symbols Hydraulic Lines, Pumps, Motors and Cylinders,Valves, Miscellaneous Units and Methods of Operation Pneumatic Air Prep Units, Pneumatic Valves and Valve Actuators, Lines and Functions. Cylinders Fundamental Cylinders Hydraulic Cylinder Speeds Theoretical Push and Pull Forces for Cylinders How to Select a Hydraulic Cylinder and Power Unit. Pumps Electric Motor Horsepower. Formulas Thermal Formulas, Accumulator Formulas, and Volume and Capacity Equivalents Table. Clean and repair pump. If necessary, drain and flush hydraulic system. Try to find source of contamination. Repair or replace pump. Check for problems causing pump wear such as misalignment or contaminated oil. General Troubleshooting Charts, Air in system. Examine suction side of system for leaks. Make sure oil level is correct. Oil leaks on the pressure side of system could account for loss of oil. Viscosity of oil may be too high at start of warm-up period. Allow oil to warm up to operating temperature before using hydraulic functions. Overheating of Oil in System. Operator holds control valves in power position too long, causing relief valve to open. Return control lever to neutral position when not in use. b. Using incorrect oil. Use oil recommended by manufacturer. Be sure oil viscosity is correct. c. Low oil level. Fill reservoir. Look for leaks. Sludge and dirt in pump. Disassemble and inspect pump and lines. Clean hydraulic system. Determine cause of dirt. Hydraulic Symbols and more.
Tags : horsepower formulas, viscosity of oil, oil viscosity, motor horsepower, unit pumps, oil leaks, hydraulic symbols, volume and capacity, hydraulic functions, correct oil, source of contamination, valve actuators, hydraulic lines, hydraulic cylinder, suction side
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November 23rd, 2008 at 8:46 pm
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