Varco公司New+TDS+Course顶驱教材.ppt

Program Contents TDS 11 Mechanical Systems Safety! Top Drive Development Lubrication Guide Beams Carriage Motor Housing Transmission PH-50 Pipehandler On-Board Hydraulics Safety at Varco! General Safety Equipment Use Personnel Training Motion Hazards Maintenance Hazards Equipment Visibility Electrical Systems Electrical Systems Hydraulic Systems Hydraulic Systems Hydraulic Systems Hydraulic Systems Pneumatic Systems Pneumatic Systems The Advantages of Top Drives The Advantages of Top Drives Hydraulics Troubleshooting Shot-Pin Clamp Cylinder Hydraulics Troubleshooting Link Tilt Cylinders Elevator Does Not Reach Mousehole or Derrickman Pressure at B1 does not decay to less than 100psi Replace the pilot to open check valve Links Drift When Valve is Released Pilot to open check valve is contaminated or stuck in open position Replace the pilot to open check valve Elevator Does Not Float Back to Center Position Use manual override If the link tilts, the problem is electrical If the links do not tilt, the problem is hydraulic Test the solenoid connectors Test the hydraulic system Link clamp incorrectly adjusted Check readjust Faulty cylinder seal Replace cylinder seal Load holding relief valves are stuck open, contaminated or need adjustment Replace or adjust the load holding relief valve Link Tilt Does Not Tilt Solenoid Valve is not shifting Check electrical continuity Problem Probable Causes Remedy Links Do Not Move Together Load holding valves need adjustment Adjust all (4) valves to 1,500psi Hydraulics Troubleshooting Link Tilt Cylinders Hydraulics Troubleshooting Gearbox Lubrication System Oil Leaking From Lower Seal Oil Pump Loss Alarm is On Worn oil seals Replace seals Oil viscosity too high Lower oil viscosity Oil Leaking From Upper Bearing Retainer Worn oil seals Replace seals Gearbox Oil Temperature less than 230oF Oil level too low or too high Adjust oil level Incorrect oil Replace with recommended oil Damaged gears or bearings Repair or replace Oil lev