Revision History Table of Revisions
Date Changed Rev
Mar 2014 Converted to Danfoss layout - DITA CMS BA
Sep 2010 New back cover AC
Jan 2010 Japan location AB
Aug 2005 First edition AA
Service Manual Steering, Priority Valve OLS 160
2 520L0927 • Rev BA • Mar 2014
Exploded Views
Exploded view OLS 160..................................................................................................................................................................4
Tools
Tools for OLS 160..............................................................................................................................................................................5
Dismantling
Dismantling the OLS 160...............................................................................................................................................................6
Modification
Cleaning...............................................................................................................................................................................................9
Inspection and replacement........................................................................................................................................................ 9
Lubrication..........................................................................................................................................................................................9
Assembling
Assembling the OLS 160..............................................................................................................................................................10
Service Manual Steering, Priority Valve OLS 160
Contents
520L0927 • Rev BA • Mar 2014 3
Exploded view OLS 160
152B103.10
7
2
8
17
16
15
14
1
2
5
4
9
6
1. Plug
2. O-ring
4. Orifice
5. Spool
6. Housing
7. Spring
8. LS-plug
9. Name plate
14. Washer (Steel)
15. Pressure relief valve
16. Washer (Alu.)
17. Pressure relief valve plug
Service Manual
Steering, Priority Valve OLS 160
Exploded Views
4 520L0927 • Rev BA • Mar 2014
Tools for OLS 160
Open-end spanner 27 mm
Multigrip pliers
Nylon pin
Hexagon socket spanners 5, 8 and 10 mm
The tools are not available from Danfoss
Service Manual Steering, Priority Valve OLS 160
Tools
520L0927 • Rev BA • Mar 2014 5
Dismantling the OLS 160
Screw out the PP plug using the open-end
spanner. Remove the O-ring.
Screw out the LS plug using the open-end spanner.
Remove the O-ring.
Take out the spring.
Service Manual Steering, Priority Valve OLS 160
Dismantling
6 520L0927 • Rev BA • Mar 2014
Press out the spool using the nylon pin.
Screw out the pressure relief valve plug
(8 mm hexagon spanner).
Screw out the pressure relief valve plug
(10 mm hexagon spanner).
Service Manual Steering, Priority Valve OLS 160
Dismantling
520L0927 • Rev BA • Mar 2014 7
Hold the pressure relief valve firmly with the
multigrip pliers and screw out the setting screw (5
mm hexagon socket spanner).
The pressure relief valve consists of valve housing,
cone, spring and setting screw.
Service Manual Steering, Priority Valve OLS 160
Dismantling
8 520L0927 • Rev BA • Mar 2014
The control spring pressure can be altered by replacing the spring (see table below). Replace name plate
so that code no. and control spring pressure match each other again.
Control spring pressure
bar [psi]
d
mm [in]
D
i
mm [in]
L
O
mm [in]
4 [58] 2.5 [0.10] 12.5 [0.50] 50 [1.97]
7 [102] 3.0 [0.12] 12.5 [0.50] 50 [1.97]
10 [145] 3.2 [0.13] 12.5 [0.50] 50 [1.97]
Cleaning
Clean all parts carefully in low aromatic kerosene.
Inspection and replacement
Check all parts carefully and make any replacements necessary.
All O-rings must be replaced.
Lubrication
Before assembly, lubricate all parts with hydraulic oil.
Service Manual Steering, Priority Valve OLS 160
Modification
520L0927 • Rev BA • Mar 2014 9
Assembling the OLS 160
The illustration shows the internal PP spool and
internal PP-plug. The internal PP-plug can only be
used with the internal PP-spool.
The illustration shows the external PP spool and
external PP-plug. The external PP-plug can only be
used with the internal PP-spool.
Guide the spool into the bore.
Use the nylon pin to centre the spool in the bore.
Service Manual Steering, Priority Valve OLS 160
Assembling
10 520L0927 • Rev BA • Mar 2014
Guide the spring and LS-plug into the bore.
Remember O-ring
Screw in the PP-plug (with O-ring) and LS-plug (27
mm open-end spanner).
Fit the cone, spring and setting screw in the valve
housing (if dismantled). Fit the seal washer (if
removed) and the pressure relief valve (10 mm
hexagon socket spanner).
Tightening torque:
30 N.m [265.5 lbf.in]
Make the pressure setting on a panel or on the
vehicle. Pressure setting shall be done at pump
flow 80 l/min [21.13 US gal/min]
Service Manual Steering, Priority Valve OLS 160
Assembling
520L0927 • Rev BA • Mar 2014 11
Fit the seal ring (if removed) and the plug for the
pressure relief valve
(8 mm hexagon socket spanner).
Tightening torque:
50 N.m [442.5 lbf.in]
The OLS 160 is now reassembled
Service Manual Steering, Priority Valve OLS 160
Assembling
12 520L0927 • Rev BA • Mar 2014
Service Manual Steering, Priority Valve OLS 160
520L0927 • Rev BA • Mar 2014 13
Service Manual Steering, Priority Valve OLS 160
14 520L0927 • Rev BA • Mar 2014
Service Manual Steering, Priority Valve OLS 160
520L0927 • Rev BA • Mar 2014 15
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
electronic components. We specialize in providing state-of-the-art technology and solutions that
excel in the harsh operating conditions of the mobile off -highway market. Building on our extensive
applications expertise, we work closely with our customers to ensure exceptional performance for a
broad range of off -highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring vehicles to
market faster.
Danfoss – Your Strongest Partner in Mobile Hydraulics.
Go to www.powersolutions.danfoss.com for further product information.
Wherever off -highway vehicles are at work, so is Danfoss.
We off er expert worldwide support for our customers, ensuring the best possible solutions for
outstanding performance. And with an extensive network of Global Service Partners, we also provide
comprehensive global service for all of our components.
Please contact the Danfoss Power Solution representative nearest you.
Local address:
Danfoss
Power Solutions GmbH & Co. OHG
Krokamp 35
D-24539 Neumünster, Germany
Phone: +49 4321 871 0
Danfoss
Power Solutions ApS
Nordborgvej 81
DK-6430 Nordborg, Denmark
Phone: +45 7488 2222
Danfoss
Power Solutions US Company
2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239 6000
Danfoss
Power Solutions
(Shanghai) Co. Ltd.
Building #22, No. 1000 Jin Hai Rd
Jin Qiao, Pudong New District
Shanghai, China 201206
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.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
520L0927 • Rev BA • Mar 2014 www.danfoss.com
©
Danfoss A/S, 2014
Products we off er:
• Bent Axis Motors
• Closed Circuit Axial Piston
Pumps and Motors
• Displays
• Electrohydraulic Power
Steering
• Electrohydraulics
• Hydraulic Power Steering
• Integrated Systems
• Joysticks and Control
Handles
• Microcontrollers and
Software
• Open Circuit Axial Piston
Pumps
• Orbital Motors
• PLUS+1® GUIDE
• Proportional Valves
• Sensors
• Steering
• Transit Mixer Drives
Comatrol
www.comatrol.com
Schwarzmüller-Inverter
www.schwarzmueller-
inverter.com
Turolla
www.turollaocg.com
Valmova
www.valmova.com
Hydro-Gear
www.hydro-gear.com
Daikin-Sauer-Danfoss
www.daikin-sauer-danfoss.com
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