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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
2
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
520L0927 • Rev BA • Mar 2014
Service Manual
Steering, Priority Valve OLS 160
Contents
Exploded Views
Tools
Dismantling
Modification
Assembling
Exploded view OLS 160..................................................................................................................................................................4
Tools for OLS 160..............................................................................................................................................................................5
Dismantling the OLS 160............................................................................................................................................................... 6
Cleaning...............................................................................................................................................................................................9
Inspection and replacement........................................................................................................................................................ 9
Lubrication..........................................................................................................................................................................................9
Assembling the OLS 160..............................................................................................................................................................10
520L0927 • Rev BA • Mar 2014
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Service Manual
Steering, Priority Valve OLS 160
Exploded Views
Exploded view OLS 160
17
1
2
6
16
5
15
4
14
9
7
2
8
152B103.10
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
4
520L0927 • Rev BA • Mar 2014
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
520L0927 • Rev BA • Mar 2014
5
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.
6
520L0927 • Rev BA • Mar 2014
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).
520L0927 • Rev BA • Mar 2014
7
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.
8
520L0927 • Rev BA • Mar 2014
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.
Control spring pressure
bar [psi]
d
mm [in]
Di
mm [in]
LO
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.
520L0927 • Rev BA • Mar 2014
9
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.
10
520L0927 • Rev BA • Mar 2014
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]
520L0927 • Rev BA • Mar 2014
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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
12
520L0927 • Rev BA • Mar 2014
Service Manual
Steering, Priority Valve OLS 160
520L0927 • Rev BA • Mar 2014
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Service Manual
Steering, Priority Valve OLS 160
14
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Service Manual
Steering, Priority Valve OLS 160
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15
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520L0927 • Rev BA • Mar 2014
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