Danfoss 51 Series Service Manual
Also see for 51 Series: Service Kit InstructionsService manualRepair instructionsService manualService manual
                                                                | |
Contents
| 
IntroductionOverview..............................................................................................................................................................................................5Ordering replacement parts and service................................................................................................................................. 5Safety precautions............................................................................................................................................................................5Symbols used in Danfoss literature............................................................................................................................................6General instructions........................................................................................................................................................................ 7Keep it clean..................................................................................................................................................................................7Inspect for system contamination........................................................................................................................................ 7Replace the O-rings and gaskets........................................................................................................................................... 7Lubricate all moving parts....................................................................................................................................................... 7Torque procedure....................................................................................................................................................................... 7Variable displacement motors.....................................................................................................................................................7Series 51-1 motors............................................................................................................................................................................8Closed circuit......................................................................................................................................................................................9Open circuit......................................................................................................................................................................................10Shafts.................................................................................................................................................................................................. 11OperationLoop flushing...................................................................................................................................................................................12Displacement limiters...................................................................................................................................................................13Mounting configurations............................................................................................................................................................ 14Speed sensors..................................................................................................................................................................................16Controls............................................................................................................................................................................................. 17Overview......................................................................................................................................................................................17Two-position controls.................................................................................................................................................................. 17Pressure-compensator controls................................................................................................................................................19Proportional controls....................................................................................................................................................................20Technical specificationsGeneral specifications.................................................................................................................................................................. 21Technical data................................................................................................................................................................................. 21Fluid specifications........................................................................................................................................................................22Pressure measurementsRequired tools................................................................................................................................................................................. 23Port locations and gauge installation.....................................................................................................................................23Fluid and filter maintenanceFluid and filter recommendations........................................................................................................................................... 26Hazardous material.................................................................................................................................................................. 26Initial startup proceduresProcedure..........................................................................................................................................................................................27TroubleshootingSluggish system..............................................................................................................................................................................29System operating hot...................................................................................................................................................................29Excessive noise or vibration....................................................................................................................................................... 29Motor operates normally in one direction only..................................................................................................................30Improper output speed............................................................................................................................................................... 30Low output torque........................................................................................................................................................................ 30AdjustmentsOverview........................................................................................................................................................................................... 32Charge pressure relief valve..................................................................................................................................................32Measuring charge pressure...................................................................................................................................................32Adjusting charge pressure.................................................................................................................................................... 32Minimum displacement limiter................................................................................................................................................ 33Adjusting minimum displacement.................................................................................................................................... 33Maximum displacement limiter................................................................................................................................................35Series 51 motors .......................................................................................................................................................................36Series 51-1 motors ...................................................................................................................................................................36Service ManualSeries 51 and 51-1 MotorsContents© Danfoss | March 2016 11008567 | AX00000013en-US0202 | 3 |
Related manuals for Danfoss 51 Series
Danfoss 51 Series Service Manual
Danfoss MAH Series Service Manual
Danfoss K Frame Series Service Manual
Danfoss MP1 Service Manual
Danfoss HG7 Service Manual
Danfoss H1B 060 Service Manual
Danfoss H1F 060 Service Manual
Danfoss TMM 070 Service Manual
Danfoss EM-PME375 Series User Manual
Danfoss 51 Series Service Kit Instructions
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine