OSPB/OSPC/OSPF Steering Units Service Manual
Contents
1. Check valve and 20 Washer the seats for relief and shock valves are locktited 3 Ball 8 5 mm 0 33 in 22 Special screw 4 Thread bushing 23 Screw 5 O ring used with kin ring item 6 24 Name plate 6 Kin ring 30 Complete relief valve 7 Bearing assembly 31 Spring wire 10 Ring 32 Complete shock valve 11 Cross pin 33 Ball 3 16 in 14 Spacer 38 Spring 13 Cardan shaft 34 Rolled pin 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Exploded View and Seal Kit Exploded View OSPC OSPF Callouts continued Callout Description Callout Description 12 Set of springs 36 Bushing 15 O ring 35 Ball 16 Distributor plate 39 Kin ring 17 Gearwheel set 40 O ring 18 O ring 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Tools Tools Holding tool Code number SJ 150 9000 2 F300 937 Guide ring Code number SJ 150 9000 16 F301 015 Assembly tool for O ring and kin ring Roto Glyd Code number SJ 150 9000 11 Code number SJ 150N4014 1 F300 940 520L0066 Rev CA Mar 2014 7 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Tools Assembly tool for lip seal Code number SJ 150 9000 17 F300 944 Assembly tool for cardan shaft Code number SJ 150 9000 3 F300 945 Assembly tool for dust seal Code number SJ2. reduce costs and bring vehicles to e Displays market faster Electrohydraulic Power Danfoss Your Strongest Partner in Mobile Hydraulics Steering Go to www powersolutions danfoss com for further product information e Electrohydraulics e Hydraulic Power Steering Wherever off highway vehicles are at work so is Danfoss e Integrated Systems We offer 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 e Joysticks and Control Handles Microcontrollers and Please contact the Danfoss Power Solution representative nearest you Software Open Circuit Axial Piston Pumps Orbital Motors e PLUS 1 GUIDE Proportional Valves Sensors Steering Transit Mixer Drives Comatrol www comatrol com Local address Schwarzmiiller 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 Danfoss Danfoss Power Solutions US Company Power Solutions GmbH amp Co OHG 2800 East 13th Street Krokamp 35 Ames IA 50010 USA D 24539 Neum nster Germany Phone 1 515 239 6000 Phone 49 4321 871 0 comprehensive global service for all of our components Power Solutions ApS Nordborgvej 81 DK 6430 Nordborg Denmark Phone 45 7488 2222 Danfoss Power Sol
3. 150 9000 22 F300 946 8 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Tools Torque wrench 0 70 N m 13 mm socket spanner 6 8 and 12 mm sockets 12 mm screwdriver 9 9 8 e 2 mm 0 08 in screwdriver a 13 mmring spanner a 6 8 and 12 mm socket spanners Plastic hammer Tweezers F300 939 The tools are not available from Danfoss 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Dismantling Dismantle steering column from steering unit and place the steering unit in the holding tool Screw out the screws in the end cover 6 off plus one special screw Remove the end cover sideways Lift the gearwheel set with spacer if fitted off the unit Take aut the two O rings 10 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Remove the cardan shaft F300 950 Remove distributor plate Screw out the threaded bush over the check valve 520L0066 Rev CA Mar 2014 11 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Remove O ring F300 952 OSPB OSPB LS OSPBX LS Shake out the check valve ball 8 mm OSPC LS OSPC LSR Shake out the check valve ball and suction valve pins and balls On some pins in the OSPC there are two springs s
4. MAKING MODERN LIVING POSSIBLE Steering Unit Type OSPB OSPC and OSPF 5 powersolutions danfoss com Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Revision History Table of Revisions Date Changed Rev Mar 2014 Converted to Danfoss layout DITA CMS CA Aug 2011 Drawing BG May 2011 Hexagon size BF Sep 2010 New back cover BE Jan 2010 Japan location BD Dec 2008 Tightening torque changed BC 2 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Contents Exploded View and Seal Kit Tools Dismantling Assembly Exploded View OS PB mnnera as E sons cones casdeussesv NOANA AE Exploded View OSPC OSPF TOOS iney A ASEE 7 DismMantlingiisesaiea ea EAE RE AE NUR EE TEE 10 Dismantling the pressure relief valve for OSPC sssscssssscssssssssssccssuseccsssesesseesssusecssnscessuecessuecessueeessusecssneesesaecssaeeeesneeees 16 Dismantling se ccsscccassscoeshestcancgnnsvernsosctcdseaconscononssacasigscasseteansic caas ctonssbesytsconassconsdstadicensisusnoabasetasusgnssconnazsicosugacesseceuusic cusacebeneedests 16 Dismantling the pressure relief valve esssscsssssscssesccsseecesusecssnsecesueesssuccsssecesuseessnsceesusecessseessusesesuseessaseessuseessneeessasees 18 CVS AI scene sc ciscovcsyns cece cans E E EAE EEA state tacpewvabcctas Lubrication i Inspection and ReplacemMentisec ccsssscossssssescss
5. amfer on the inner bearing race must face the inner spool Installation Instructions for O ring Kin ring Roto glyd Turn the steering unit until the bore is horizontal Guide the outer part of the assembly tool into the bore for the spool sleeve F300 984 Grease o ring and king ring roto Glyd with hydraulic oil and place them on the tool F300 985 Hold the outer part of the assembly tool in the bottom of the steering unit housing and guide the inner part of the tool right to the bottom F301 986 520L0066 Rev CA Mar 2014 23 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Press and turn the o ring kin ring into position in the housing F301 987 Draw the inner and outer parts of the assembly tool out of the steering unit bore leaving the guide from the inner part in the bore F301 988 Installation Instructions for Lip Seal Lubricate the lip seal with hydraulic oil and place it on the assembly tool 24 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Guide the assembly tool right to the bottom F300 990 Press and turn the lip seal into place in the housing F301 991 ES With a light turning movement guide the spool and sleeve into the bore Fit the spool set holding the cross pin horizontal F300 992 520L0066 Rev CA Mar 2014 25 Serv
6. anual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Remove dust seal and O ring Kin ring Roto Glyd Remove plugs from shock valves using a6 mm hexagon socket spanner F300 961 Remove seal washers 2 off F300 962 520L0066 Rev CA Mar 2014 15 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Unscrew the setting screws using a 6 mm hexagon socket spanner F300 963 Shake out the two springs and two valve balls into your hand The valve seats are bonded into the housing and cannot be removed F300 964 The shock valves are now dismantled o AW oO wid F300 965 Dismantling the pressure relief valve for OSPC Dismantling Dismantling the Pressure Relief Valve for OSPC 16 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Screw out the plug using and 8 mm hexagon socket spanner Remove seal washers F300 966 Unscrew the setting screw using an 6 mm hexagon socket spanner F300 968 Shake out spring and piston The valve seat is bonded into the housing and cannot be removed F300 942 520L0066 Rev CA Mar 2014 17 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling The pressure relief valve is now dismantled F300 967 Dismantling the pressure relief valve Dismantling OSPC The stee
7. ee page 4 pos 38 Replace this pins prior to the reassembly Take care to keep the cross pin in the sleeve and spool horizontal The pin can be seen through the open end of the spool Press the spool inwards and the sleeve ring bearing races and needle bearing will be pushed out of the housing together F300 955 12 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling Take ring bearing races and needle bearing from sleeve and spool The outer thin bearing race can sometimes stick in the housing therefore check that it has come out Press out the cross pin Use the special screw from the end cover Note next point paragraph OSPB CN and OSPC CN CN A small mark has been made with a pumice stone on both spool and sleeve close to one of the slots for the neutral position springs see drawing If the mark is not visible remember to leave a mark of your own on sleeve and spool before the neutral position springs are dismantled For OSPF both marks should be placed opposite each other 150 412 10 F300 957 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Dismantling OSPF F301 014 Carefully press the spool out of the sleeve Press the neutral position springs out of their slots in the spool F300 959 14 520L0066 Rev CA Mar 2014 Service M
8. he holes in the sleeve are visible through the slots in the spool F300 978 OSPB CN and OSPC CN Assemble the spool sleeve and make sure the marks on spool and sleeve are opposite each other Dismantling for more information F301 016 20 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Press the springs together and push the neutral position springs into place in the slave Line up the springs and centre them Guide the ring down over the sleeve The ring should be able to move free of springs Fit the cross pin into the spool sleeve F300 981 F300 982 520L0066 Rev CA Mar 2014 21 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Fit bearing races and needle bearings as shown on the drawing next page Assembly Pattern for Bearings Assembling Pattern for Standard Bearing 150 383 10 1 Outer bearing race 2 Needlebearing 3 Inner bearing race 4 Spool 5 Sleeve Assembly Pattern for Double Bearing a 150 336 10 S 4 1 Washer for axial bearing 2 Outer needlebearing F300 983 22 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly 3 Outer bearing race 4 Spool 5 Sleeve 6 Inner needlebearing 7 Inner bearing race The inside ch
9. ice Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly The spool set will push out the assembly tool guide The o ring and kin ring roto Glyd are now in position F300 993 Turn the stearing unit until the bore is vertical again Put the check valve ball into the hole indicated by the arrow Screw the threaded bush lightly into the check valve bore The top of the bush must lie just below the surface of the housing F300 953 26 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Place a ball in the two holes indicated by the arrows Place a new pin in the same two holes In some cases a spring has to be fitted see page 4 pos 38 on the pin before it is placed in the housing F300 997 520L0066 Rev CA Mar 2014 27 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Grease the o ring with mineral oil approx viscosity 500 mm s SUS at 20 C 68 F Place the distributor plate so that the channel holes match the holes in the housing Guide the cardan shaft down into the bore so that the slot is parallel with the connection flange 28 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Place the cardan shaft as shown so that it is held in position by the mounting fork Cos F301 001 Grease
10. not use a hammer F301 012 34 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Maximum Tightening Torque and Hydraulic Connections Maximum Tightening Torque and Hydraulic Connections Maximum Tightening Torque and Hydraulic Connections T Tank L Left port P Pump R Right port 150 382 10 Screwed connection Maximum tightening torque N m Ibf in With cutting edge With cooper washer With aluminium washer With O ring G 1 4 35 309 35 309 35 309 G 3 8 70 619 45 398 50 442 G 1 2 100 885 55 486 80 708 7 16 20 UNF 3 i 20 177 3 4 16 UNF gt 60 531 M12 1 5 30 265 20 177 30 265 25 221 M18 1 5 80 708 55 486 70 619 50 442 M22 1 5 100 885 65 575 80 708 60 531 520L0066 Rev CA Mar 2014 35 Products we offer 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 Bent Axis Motors excel in the harsh operating conditions of the mobile off highway market Building on our extensive Closed Circuit Axial Piston Pumps and Motors 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
11. ring unit OSPC is now completely dismantled Replace this pins prior to the reassembly 8 0 OT me mo TTT es MNO o F300 971 Cleaning Clean all parts carefully in Shellsol K or the like Lubrication Before assembly lubricate all parts with hydraulic oil Inspection and Replacement Replace all seals and washers Check all parts carefully and make any replacements necessary 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Assembling Place the two flat neutral position springs in the slot F300 975 Place the curved springs between the flat ones and press them into place 150 386 10 Line up the spring set F300 976 520L0066 Rev CA Mar 2014 19 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Guide the spool into the sleeve Make sure that spool and sleeve for OSPB LS OSPBX LS OSPC LS OSPC LSR and OSPF are placed correctly in relation to each other see page 10 F300 977 Assemble spool and sleeve OSPB LS OSPBX LS OSPC LS OSPC LSR and OSPF When assembling spool and sleeveonly one of two possible ways of positioning the spring slots is correct There are three slots in the spool and three holes in the sleeve in the end of the spool sleeve opposite to the end with spring slots Place the slots and holes opposite each other so that parts of t
12. s for OSPC OSPC LS OSPC LSR ssssssssscsssesssrsssssecssssseesesssssseceessnseessssnsecsessnseesssssnseeessese 32 Maximum Tightening Torque and Hydraulic Connections Maximum Tightening Torque and Hydraulic CONNMECtIONS scsssssscssseecsseesesstecsssscecseeessneeessusececuseersueeessusecssneeessnseees 35 520L0066 Rev CA Mar 2014 3 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Exploded View and Seal Kit Exploded View OSPB Exploded View OSPB Callouts 150 385 10 Callout Description Callout Description 1 Dust seal ring 15 O ring 80 5 1 5 mm 3 17 0 06 in 2 Housing spool sleeve 16 Distributor plate 3 Ball 8 5 mm 0 33 in 17 Gearwheel 4 Thread bushing 18 O ring 75 92 1 78 mm 2 99 0 07 in 5 O ring with kin ring or Roto Glyd 19 End cover 7 Bearing assembly 20 Washer 8 2 11 9 1 0 mm 0 32 0 47 0 04 in 10 Ring for springs 22 Special screw 11 Cross pin 6 41 mm 0 24 1 61 in 23 Screw 12 Neutral position springs 24 Name label 13 Cardan shaft 26 Spacer 14 Spacer 4 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Exploded View and Seal Kit Exploded View OSPC OSPF 150 454 10 Exploded View OSPC OSPF Callouts Callout Description Callout Description 1 Dust seal ring 19 End cover 2 Housing spool and sleeve
13. ssessassseseesconnvecenssgiansssegnanssesonstarsussssaneseseveessonssecovscenaioschanseenanbesstasconnsecendagetznees 18 AVS SEU aa DD I Cheesecakes ann acpestchccasass casa cueysccanssastody RE ENEA AAEE A ATRETAN 19 Assemble spool and SlC ve sssssscsssscssssssssssecssnessccssecssusecssnseccsssecssnsceesasecsssseeccanesesnscessnssecssseessneceessseessaueeccaseeeeaseessnutencaneets 20 OSPB LS OSPBX LS OSPC LS OSPC LSR and OSPF csssssssssscccesssssesessseccsssseseececeeessnsssseseceesesssneseeseeesnsnsseceseesecensesesss 20 SPB CN and OSPEC CN isisisi eisino EEO EE SE See Assembly Pattern for BearingS sssssscssssssccsssessssescsssecssssscsssesssnsecssusecsuseessucsessusecssnsseesuecessueeessuseeesueessnsesesusecssnesesueeesenseessee Assembling Pattern for Standard Bearing 7 Assembly Pattern for Double Bearing ssscssssssccsseccssecsssuseccsseesssssescssecessusecssueeessscesssneccsuecsesseessaneesssueeessueeeesseessansessae Installation Instructions for O ring Kin ring Roto GLY ssssesssssssseesecsssessecessseesecsssecsecssssseseesssesesecsssseseessneeeesnsneesses 23 Installation INStrUCtioNs for Lip SOal sesssssesssssssesssssssssssssecssessssscssessssecssecssssssnccsssessssccsssessscssssecsuccsssecssccsssccssecssseceseesssessss 24 Assembly of the Pressure Relief Valve for OSPC ssssssssssssssssccsssscsssecssssseccssecsssseeessuecessueecsssecesssecsssuseccaneceenseeesaneeseaueese 31 Assambly of the Shock Valve
14. the two o rings with mineral oil approx viscosity 500 mm s SUS at 20 C F and place them in the two grooves in the gear rim Fit the gearwheel and rim on the cardan shaft Caution Fit the gearwheel rotor and cardan shaft so that a tooth base in the rotor is positioned in relation to the shaft slot as shown Turn the gear rim so that the seven trough holes match the holes in the housing F301 002 520L0066 Rev CA Mar 2014 29 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Fit the spacer if any F301 003 Place the end cover in position F301 004 Fit the special screw with washer and place it in the hole shown F301 005 30 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Fit the six screws with washers and insert them Cross tighten all the screws and the rolled pin with a torque of KBO 6 N m 265 5 53 Ibf in The OSPB OSPB LS and OSPBX LS can now be function tested Assembly of the Pressure Relief Valve for OSPC Fit the piston Fit the spring F300 938 F301 013 520L0066 Rev CA Mar 2014 31 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Screw in the setting screw with an 8 mm hexagon socket spanner Make the pressure setting on a panel or the vehicle Screw plug with dust seal in
15. to the housing using an 8 mm hexagon socket spanner Tightening torque 65 5 N m 575 3 44 2 Ibf in F300 941 Assambly of the Shock Valves for OSPC OSPC LS OSPC LSR Put a ball in the two holes indicated by the arrows 32 520L0066 Rev CA Mar 2014 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Place springs and valve cones over the two balls The blue spring applies to setting range 90 180 bar 1305 2610 psi The untreated spring applies to setting range 170 260 bar 2465 3770 psi F301 007 Screw in the two setting screws using a 6 mm hexagon socket spanner Make the pressure setting on a panel or the vehicle F301 008 Screw plug with seal ring into the two shock valves and tighten them with a torque of RBO 10 N m 265 5 88 5 Ibf in using a 6 mm lhexagon socket spanner Steering unit type OSPC OSPC LS or OSPC LSR is now assembled F301 009 520L0066 Rev CA Mar 2014 33 Service Manual Hydrostatic Steering Unit Type OSPB OSPC and OSPF Assembly Place the dust seal ring in the housing With the OSPC OSPC LS and OSPC LSR the dust seal ring must be placed only after the pressure relief valve and shock valves have been fitted F301 010 Fit the dust seal ring in the housing using special tool SJ 150 9000 22 see page 5 and a plastic hammer F301 011 Press the plastic plugs into the connection ports Do
16. utions 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 520L0066 Rev CA Mar 2014 www danfoss com Danfoss A S 2014
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