MAKING MODERN LIVING POSSIBLE
Service Manual
Steering
Priority Valve OLS 160
powersolutions.danfoss.com
Service Manual Steering, Priority Valve OLS 160
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
2 520L0927 • Rev BA • Mar 2014
Service Manual Steering, Priority Valve OLS 160
Contents
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
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152B103.10
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Service Manual
Exploded Views
Exploded view OLS 160
Steering, Priority Valve OLS 160
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
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Service Manual Steering, Priority Valve OLS 160
Tools
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
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Service Manual Steering, Priority Valve OLS 160
Dismantling
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.
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Service Manual Steering, Priority Valve OLS 160
Dismantling
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).
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Service Manual Steering, Priority Valve OLS 160
Dismantling
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.
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Service Manual Steering, Priority Valve OLS 160
Modification
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.
Cleaning
Inspection and replacement
Lubrication
Control spring pressure
bar [psi]
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]
Clean all parts carefully in low aromatic kerosene.
Check all parts carefully and make any replacements necessary.
All O-rings must be replaced.
Before assembly, lubricate all parts with hydraulic oil.
d
mm [in]
D
i
mm [in]
L
O
mm [in]
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Service Manual Steering, Priority Valve OLS 160
Assembling
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.
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Service Manual Steering, Priority Valve OLS 160
Assembling
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]
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Service Manual Steering, Priority Valve OLS 160
Assembling
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
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Service Manual Steering, Priority Valve OLS 160
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Service Manual Steering, Priority Valve OLS 160
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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
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Go to www.powersolutions.danfoss.com for further product information.
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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.
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