Danfoss 51 Series Service Manual
Also see for 51 Series: Service Kit InstructionsRepair instructionsService manualService manualService manual
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Contents
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OperationFunctional DescriptionThe HS control consists of a ported housing mounted on a multiblock. External variable signal pressurefed to port X1 is routed to the 4-way valve. As signal pressure shifts the 4-way valve it ports pressure tothe ends of the servo piston changing motor displacement. A threshold spring and ramp spring(s) act onthe opposite end of the 4-way valve.HS SchematicnT6T2T1 T7 T8T3T4U6U7T5max.disp.AL2 M4 M3 NM1L1M2M7 X1M5XA XB BP106 417EControlMultiblockPCOR ValveBPD Spool ShuttleLoop Flush4-Way ValveRepairDisassembly1. Using a 4 mm internal hex wrench, remove screws (M10).2. Remove the HS valve housing from the multifunction block.3. Remove and discard O-ring (M12).Service Manual Series 51 Hydraulic Proportional Controls Service ManualHS Control11009446 • Rev BA • July 2014 21 |
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