Danfoss EH Series Bedienungsanleitung
Revision History Table of Revisions
Date Changed Rev
Mar 2014 Converted to Danfoss layout - DITA CMS BA
Sep 2010 New back cover AB
Jun 2010 First edition AA
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
2L1026660 • Rev BA • Mar 2014
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.......................................................................................................................................................................................13
Inspection and replacement.................................................................................................................................................13
Lubrication..................................................................................................................................................................................13
Reassembly Reassembly of the EH valve........................................................................................................................................................14
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Contents
L1026660 • Rev BA • Mar 2014 3
Exploded view EH valve with dynamic orifice (no PVFC Spool)
17
3
5678
6
13
1
16 2
15
14
11
10
9
12 4
5
16
18
P301 292
Spare parts list
Spare parts Item Number per unit Torque setting Nm
Valve housing 1 1 -
Main spool 2 1 -
PVE 3 1 -
Plug 4 1 50 ± 5
Filter 5 2 -
O-ring 6 3 -
O-ring 7 1 -
O-ring 8 1 -
Spring 9 1 -
PR cone 10 1 -
PR spool 11 1 -
Plug 12 1 15 ± 2
Pilot cone and spring 13 1 -
Adjusting screw 14 1 -
Protection plug 15 1 -
Plug 16 2 15 ± 2
Screw 17 4 8 ± 0.5
Throttle screw 18 1 1 ± 0.1
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Exploded view
4L1026660 • Rev BA • Mar 2014
Exploded viev EH Valve with PVFC Spool
18
15
14
13
17
12
11
10
8
9
3
78
56
16 2
4
1
P301 293
Spare parts list
Parts Item Number per unit Torque setting Nm
Valve housing 1 1 -
Main spool 2 1 -
PVE 3 1 -
Plug 4 1 50 ± 5
Filter 5 1 -
O-ring 6 3 -
O-ring 7 1 -
O-ring 8 1 -
Spring 9 1 -
PR cone 10 1 -
PR spool 11 1 -
Plug 12 1 -
Pilot cone and spring 13 1 -
Adjusting screw 14 1 -
Protection plug 15 1 -
Plug 16 1 15 ± 3
Screw 17 4 8 ± 0.5
PVFC spool 18 1 -
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Exploded view
L1026660 • Rev BA • Mar 2014 5
Tools
•Open-ended spanner (or socket wrench) 27 mm
•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
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Tools
6L1026660 • Rev BA • Mar 2014
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.
Fasten housing in a vice and remove the spool
retainer plug (4) using a 27 mm spanner or socket
wrench.
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Dismantling
L1026660 • Rev BA • Mar 2014 7
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.
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Dismantling
8L1026660 • Rev BA • Mar 2014
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.
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Dismantling
L1026660 • Rev BA • Mar 2014 9
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.
Service Manual EH Electro Proportional Hydraulic Valve In-line Version
Dismantling
10 L1026660 • Rev BA • Mar 2014
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