Danfoss 51 Series Service Manual
Also see for 51 Series: Service Kit InstructionsService manualRepair instructionsService manualService manual
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Contents
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Speed sensor installation and adjustment........................................................................................................................... 37DIN and SAE flange units ...................................................................................................................................................... 37Cartridge units........................................................................................................................................................................... 39Minor repairShaft seal replacement.................................................................................................................................................................40SAE and DIN flanged motors................................................................................................................................................ 40Disassembly...........................................................................................................................................................................40Inspection.............................................................................................................................................................................. 40Reassembly............................................................................................................................................................................40Cartridge flanged motors...................................................................................................................................................... 41Disassembly...........................................................................................................................................................................41Inspection.............................................................................................................................................................................. 41Reassembly............................................................................................................................................................................42Loop flushing shuttle valve........................................................................................................................................................ 42Disassembly................................................................................................................................................................................42Inspection....................................................................................................................................................................................43Reassembly................................................................................................................................................................................. 43Charge relief valve......................................................................................................................................................................... 44Overview......................................................................................................................................................................................44Poppet style (older production)..........................................................................................................................................44Disassembly...........................................................................................................................................................................44Inspection.............................................................................................................................................................................. 44Reassembly............................................................................................................................................................................44Orificed style...............................................................................................................................................................................45Disassembly...........................................................................................................................................................................45Inspection.............................................................................................................................................................................. 46Reassembly............................................................................................................................................................................46Defeat plug................................................................................................................................................................................. 46Disassembly...........................................................................................................................................................................46Inspection.............................................................................................................................................................................. 46Reassembly............................................................................................................................................................................46Maximum angle stop - Series 51 motors............................................................................................................................... 47Disassembly................................................................................................................................................................................47Inspection....................................................................................................................................................................................48Reassembly................................................................................................................................................................................. 49Maximum angle stop - Series 51-1 motors........................................................................................................................... 49Disassembly................................................................................................................................................................................49Inspection....................................................................................................................................................................................50Reassembly................................................................................................................................................................................. 50Minimum angle adjustment screw..........................................................................................................................................51Disassembly................................................................................................................................................................................51Inspection....................................................................................................................................................................................51Reassembly................................................................................................................................................................................. 524-Way valve and threshold springs......................................................................................................................................... 524-Way valve.................................................................................................................................................................................52Disassembly...........................................................................................................................................................................52Inspection.............................................................................................................................................................................. 54Reassembly............................................................................................................................................................................54Threshold adjustment screw and springs........................................................................................................................54Disassembly...........................................................................................................................................................................54Inspection.............................................................................................................................................................................. 56Reassembly............................................................................................................................................................................57Assembling the 4-way valve.................................................................................................................................................57Service ManualSeries 51 and 51-1 MotorsContents4 | © Danfoss | March 2016 11008567 | AX00000013en-US0202 |
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