MAKING MODERN LIVING POSSIBLE Service Manual Steering Priority Valve OLS 160 powersolutions.danfoss.com
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
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 3
Exploded Views Exploded view OLS 160 1 17 2 5 6 16 4 15 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
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
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
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
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
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] 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 Inspection and replacement Lubrication 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. 520L0927 Rev BA Mar 2014 9
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
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 11
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
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