Related Manuals for Danfoss EH Series
Summary of Contents for Danfoss EH Series
- Page 1 MAKING MODERN LIVING POSSIBLE Service Manual Steering Unit EH Electro Proportional Hydraulic Valve In-line Version powersolutions.danfoss.com...
- Page 2 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Revision History Table of Revisions Date Changed Mar 2014 Converted to Danfoss layout - DITA CMS Sep 2010 New back cover Jun 2010 First edition L1026660 • Rev BA • Mar 2014...
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Page 3: Table Of Contents
Service Manual EH Electro Proportional Hydraulic Valve In-line Version Contents Exploded view Exploded view EH valve with dynamic orifice (no PVFC Spool)..................4 Exploded viev EH Valve with PVFC Spool..........................5 Tools Tools........................................6 Dismantling Dismantling the EH valve................................7 Preassembly Inspection, cleaning and replacement...........................13 Cleaning....................................... -
Page 4: Exploded View
Service Manual EH Electro Proportional Hydraulic Valve In-line Version Exploded view Exploded view EH valve with dynamic orifice (no PVFC Spool) P301 292 Spare parts list Spare parts Item Number per unit Torque setting Nm Valve housing Main spool Plug 50 ±... -
Page 5: Exploded Viev Eh Valve With Pvfc Spool
Service Manual EH Electro Proportional Hydraulic Valve In-line Version Exploded view Exploded viev EH Valve with PVFC Spool P301 293 Spare parts list Parts Item Number per unit Torque setting Nm Valve housing Main spool Plug 50 ± 5 Filter O-ring O-ring O-ring... -
Page 6: Tools
Hexagonal socket spanners 2.5 mm, 4 mm, 5 mm • Calibration Torque wrench • Small screw driver • Magnetized tool • O-ring pick or similar • 3 mm threaded screw • Bench vise Tools are not available from Danfoss L1026660 • Rev BA • Mar 2014... -
Page 7: Dismantling
Service Manual EH Electro Proportional Hydraulic Valve In-line Version Dismantling Dismantling the EH valve Remove the 4 screws (17) and pull PVE (3) from the housing. (5 mm hexagon spanner). Carefully pries lose the o-ring seals (6, 7, and 8) and Screen Mesh Filter (5) from PVE. - Page 8 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Dismantling Remove spool (2) by holding the centering spring and pull out slowly. Remove the PVFC spool retainer plug (16) using a 5 mm Allan key. This only applies to units with PVFC spool. Insert a 3 mm threaded screw into the end of the PVFC spool (18) and use to remove the spool from the housing.
- Page 9 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Dismantling Screw out the pressure reducing valve plug (12) with a 5 mm Allan key. Remove the Pressure Reducing spool (11) from the cavity. Remove the Pressure Reducing poppet (10) with a magnetized tool.
- Page 10 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Dismantling Remove the Pressure Reducing spring (9) with O- ring pick or similar. Pries of the Pilot Relief Valve plastic protection cover (15) with a small screw driver or O-ring pick. Then remove the Pilot Pressure relief valve adjusting screw (14) with a 5 mm Allan key.
- Page 11 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Dismantling Remove Pilot Relief Valve poppet/spring unit (13). (Use O-ring pick or similar). Screw out the Dynamic Orifice sealing plug (16) with a 5 mm Allan key if it has been installed. This only applies to units with dynamic orifice (i.e.
- Page 12 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Dismantling Remove the Load Sense orifice plug (21) with a 2.5 mm Allan key. This only applies to units with dynamic orifice (i.e. units without PVFC spools). L1026660 • Rev BA • Mar 2014...
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Page 13: Preassembly
Service Manual EH Electro Proportional Hydraulic Valve In-line Version Preassembly Inspection, cleaning and replacement Cleaning Clean all parts carefully in low aromatic kerosene. Inspection and replacement Check all parts carefully and make any replacements as necessary. All O-rings and screen filters must be replaced. Lubrication Before assembly, lubricate all parts with hydraulic oil. -
Page 14: Reassembly
Service Manual EH Electro Proportional Hydraulic Valve In-line Version Reassembly Reassembly of the EH valve If the EH valve has the PVFC spool (18) option, make sure it is lubricated with a thin film of oil. Carefully insert the spool (18) into the bore. Ensure that only minimal force is applied by your fingers. - Page 15 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Reassembly Mount the EH housing in a vice and screw the spool retainer plug (4) into the housing and tighten with 27 mm Torque wrench. Remember to lubricate the O-ring with a small amount of grease. Insert PV poppet/spring unit (13) into the housing.
- Page 16 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Reassembly Press fit the plastic protection plug protection plug into the cavity. This will have to be done after the PV adjustment screw (14) is set to the required pressure on a test bench. Insert the Pressure reducing spring (9) into the housing.
- Page 17 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Reassembly Then insert the PR valve spool (11) ensuring that the end with the larger opening fits against the rounded head of the poppet (10). Remember to lubricate the spool first with a thin film of oil. Screw in RP retaining plug (12) with 5 mm Allan key.
- Page 18 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Reassembly Then insert replacement filter screen (5), dome side first. Screw the dynamic orifice cover plug (16) into housing with 4 mm Allan key. Carefully place the “screen mesh” filter (5) dome first into the PVE housing, followed by the O-rings (6, 7 and 8).
- Page 19 Service Manual EH Electro Proportional Hydraulic Valve In-line Version Reassembly Mount the PVE (3) to EH housing with the four cap screws (17) and tighten with 5 mm Allan key. L1026660 • Rev BA • Mar 2014...
- Page 20 Phone: +86 21 3418 5200 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.