© 2015 General Electric Company. All rights reserved .6 | =GE Oil & GasAir to Close / Direct Acting Positioner ............................................................................................... 50Air to Close / Reverse Acting Positioner ........................................................................................... 50Field Mounting and Complete Calibration, Rotary Actuators................................................. 51Air to Open / Direct Acting Positioner ............................................................................................... 51Air to Open / Reverse Acting Positioner ........................................................................................... 51Air to Close / Direct Acting Positioner ............................................................................................... 52Air to Close / Reverse Acting Positioner ........................................................................................... 53Field Mounting and Complete Calibration Reciprocating Valves using 87/88 .............. 54Air to Open / Direct Acting Positioner ............................................................................................... 54Air to Open / Reverse Acting Positioner (4700P/4800P only) ................................................. 54Air to Close / Direct Acting Positioner ............................................................................................... 55Air to Close/Reverse Acting Positioner (4700P/4800P only) ................................................... 56Damping Adjustment ............................................................................................................................... 56Positioner Action Change (4700P/4800P Only) ............................................................................. 57From Air to Open / Direct to Air to Open/Reverse ...................................................................... 57From Air to Open / Reverse to Air to Open/Direct ...................................................................... 57From Air to Close / Direct to Air to Close/Reverse ...................................................................... 57From Air to Close / Reverse to Air to Close/Direct ...................................................................... 57Maintenance.................................................................................................................................................. 58Pilot .................................................................................................................................................................... 58Disassembly .................................................................................................................................................. 58Reassembly ................................................................................................................................................... 58Body................................................................................................................................................................... 59Disassembly .................................................................................................................................................. 59Reassembly ................................................................................................................................................... 60Diaphragm .................................................................................................................................................... 60I/P Module ...................................................................................................................................................... 60Bypass Valve Option (4700P Only)....................................................................................................... 61Assembly to Positioner ............................................................................................................................ 61Disassembly .................................................................................................................................................. 62Troubleshooting........................................................................................................................................... 63Split Range Operation - 4700P/4800P .............................................................................................. 64Cam Lobe Selection and Lever Arm Orientation .......................................................................... 65Parts Reference 4700P/4800P 3-15 and 6-30 Range................................................................ 68Parts Reference 4700E/4800E .............................................................................................................. 71Parts Reference............................................................................................................................................ 73Specification Data....................................................................................................................................... 75Specifications ............................................................................................ 75Drawings .................................................................................................... 77