Danfoss OSPD V2 Service guide
MAKING MODERN LIVING POSSIBLE
Service Manual
Steering Unit
Type OSPD V2
powersolutions.danfoss.com
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Revision History |
Table of Revisions |
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Date |
Changed |
Rev |
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Feb 2014 |
Torque value under assembly corrected |
AB |
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Dec 2013 |
First version - DITA CMS |
AA |
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2 |
L1310051 • Rev AB • Feb 2014 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Contents |
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Safety Precautions |
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Safety Precautions............................................................................................................................................................................ |
4 |
Service Literature |
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Symbols Used in Danfoss Literature.......................................................................................................................................... |
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OSPD Versions, Belonging Service Literature......................................................................................................................... |
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Exploded View and Seal Kit |
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Exploded View, OSPD V2/OSPD New Design......................................................................................................................... |
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Seal Kit for OSPD............................................................................................................................................................................... |
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Tools |
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Tools...................................................................................................................................................................................................... |
8 |
Disassembly |
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Disassembling OSPD V2.............................................................................................................................................................. |
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Assembly |
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Assembling OSPD V2.................................................................................................................................................................... |
18 |
Tightening Torques |
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Tightening Torques for Connections OSDP V2................................................................................................................... |
30 |
L1310051 • Rev AB • Feb 2014 |
3 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Safety Precautions
Safety Precautions
Always consider safety precautions before beginning a service procedure. Protect yourself and others from injury. Take the following general precautions whenever servicing a hydraulic system.
W Warning
Unintended Machine Movement
Unintended movement of the machine or mechanism may cause injury to the technican or bystanders. To prevent uintended movement, secure the machine or disable / disconnect the mechanism while servicing.
W Warning
Flammable Cleaning Solvents
Some cleaning solvents are flammable. To eliminate the risk of fire, do not use cleaning solvents in an area where a source of ignition may be present.
W Warning
Fluid under Pressure
Escaping hydraulic fluid under pressure can have sufficient force to penetrate your skin causing serious injury and/or infection. This fluid may also be hot enough to cause burns. Use caution when dealing with hydraulic fluid under pressure. Relieve pressure in the system before removing hoses, fittings, gauges, or components. Never use your hand or any other body part to check for leaks in a pressurized line. Seek medical attention immediately if you are cut by hydraulic fluid.
W Warning
Personal Safety
Protect yourself from injury. Use proper safety equipment, including safety glasses, at all times.
W Warning
Product Safety
Steering units are safety components and therefore it is extremely important that the greatest care is taken when servicing these products. There is not much wear on a steering unit and therefore they normally outlast the application they are built into. Therefore the only recommended service work on steering units is:
•Changing shaft seals and o-rings
•Disassemble, clean and assemble if contaminated
•Make hydraulic testing including valve setting.
4 |
L1310051 • Rev AB • Feb 2014 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Service Literature
Symbols Used in Danfoss Literature
Non removable part, use a new part |
Note correct orientation |
External hex head |
Mark orientation for reinstallation |
Internal hex head |
Torque specification |
Lubricate with hydraulic fluid |
Press in - press fit |
Inspect for wear or damage |
Pull out with tool - press fit |
OSPD Versions, Belonging Service Literature
This service literature is valid for OSPD V2/OSPD in new design only.
If the OSPD in question is in “old” or “V2/new” design can be traced by the product code:
•OSPD’s with product code number higher than 11113069 are all in “new” design
•OSPD’s with product code number 150xxxxx ( e.g. 150G4051) and with product code lower than 11113069 are all in “old” design
The outside shape differs between OSPD in “old” and “V2/new” design:
OSPD old design |
OSPD V2 / New Design |
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Gear set I |
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Gear set I |
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Gear set II |
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Shifting valve |
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Shifting valve |
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Gear set II |
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39 |
P301 641a |
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P301 641b |
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For further explanations between OSPD in “old” and “new” design, see Product Information Bulletin
ST2013-068.
Service literature HN.21.ZA.52 is valid for OSPD in “old” version.
L1310051 • Rev AB • Feb 2014 |
5 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Exploded View and Seal Kit
Exploded View, OSPD V2/OSPD New Design
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25 |
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26 |
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27 |
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40 |
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41 |
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25 |
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26 |
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27 |
28 |
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33 |
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41 |
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34 |
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42 |
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1 |
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43 |
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30 |
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31 |
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35 |
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32 |
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37 |
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5 |
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7 |
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3 |
4 |
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2 |
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18 |
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16 |
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56 |
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51 |
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12 |
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17 |
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18 |
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18 |
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18 |
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16 |
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16 |
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18 |
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18 |
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17a |
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18 |
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54 |
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
P301 642 |
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OSPD V2 Parts List
Parts list |
Num. per unit |
Item |
Tightening torque |
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Dust seal ring |
1 |
1 |
- |
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Housing & spool/sleeve |
1 |
2 |
- |
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Ball Ø8.5 mm |
1 |
3 |
- |
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Threaded bushing |
1 |
4 |
Screw below surface of housing |
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Shaft seal |
1 |
5 |
- |
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Bearing assembly |
1 |
7 |
- |
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Ring |
1 |
10 |
- |
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Cross pin |
1 |
11 |
- |
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Set of springs |
1 |
12 |
- |
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6 |
L1310051 • Rev AB • Feb 2014 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Exploded View and Seal Kit |
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OSPD V2 Parts List (continued) |
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Parts list |
Num. per unit |
Item |
Tightening torque |
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Cardan shaft |
1 |
13 |
- |
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Distributor plate |
3 |
16 |
- |
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Gearwheel set (GWS1) |
1 |
17 |
- |
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Gearwheel set (GWS2) |
1 |
17a |
- |
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O-ring ø79.4 x ø2.0 mm |
7 |
18 |
- |
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End cover |
1 |
19 |
- |
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Washer |
7 |
20 |
- |
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Screw |
1 |
21 |
30±6 Nm |
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Pin bolt screw |
1 |
22 |
30±6 Nm |
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Screw |
5 |
23 |
30±6 Nm |
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Model/Code label |
1 |
24 |
- |
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Adjusting screw for shock valve |
2 |
25 |
- |
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Spring with thrust pad for shock valve |
2 |
26 |
- |
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Ball ø3/16 in for shock valve |
2 |
27 |
- |
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Seat for shock valve |
2 |
28 |
6+0/-1 Nm |
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Adjusting screw for relief valve |
1 |
30 |
- |
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Spring for relief valve |
1 |
31 |
- |
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Piston for relief valve |
1 |
32 |
- |
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Ball Ø3/16 in for suction valve |
2 |
33 |
- |
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Bushing with pin for suction valve |
2 |
34 |
- |
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Ball stop, threaded for LS check |
1 |
35 |
1±0.1 Nm |
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Ball Ø3.0 mm for LS check |
1 |
36 |
- |
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Check valve |
1 |
37 |
25±5 Nm |
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O-ring ø9.0 x ø1.5 mm |
2 |
40 |
- |
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O-ring ø6.0 x ø1.5 mm |
2 |
41 |
- |
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Plug |
1 |
42 |
- |
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O-ring ø14.3 x ø2.4 mm |
1 |
43 |
- |
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Cardan shaft |
1 |
51 |
- |
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Valve housing assembly |
1 |
54 |
Do not disassembly |
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Spacer (present if GWS1 >/= 100 cm3) |
1 |
56 |
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Seal Kit for OSPD
Seal kit, Danfoss code 150N4041 is valid for all OSPD’s, both in “old” and in “new” design.
Parts list for 150N4041 |
Number per spare part kit |
Item |
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Dust seal ring |
1 |
1 |
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Shaft seal |
1 |
5 |
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O-ring |
7 |
18 |
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Washer |
7 |
20 |
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O-ring |
2 |
40 |
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O-ring |
2 |
41 |
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Plug |
1 |
42 |
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O-ring |
1 |
43 |
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L1310051 • Rev AB • Feb 2014 |
7 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
Tools
Tools
Tools
Holding tool for the entire steering unit.
Material: Appropriate metal or hard plastic.
This tool is not available from Danfoss.
Assembly tool for dust seal.
Material: Free cutting steel.
This tool is not available from Danfoss.
Assembly tool for shaft seal, O-ring/Roto Glyd type:
Code number: 11092408.
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120±2 |
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90±1 |
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<![if ! IE]> <![endif]>5±1 |
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1x45° |
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ø46±0.5 |
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2xø15±0.1 |
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-0 |
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7xø15+0 |
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ø64 |
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<![endif]>100±2
7x51.4° |
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150±2 |
P301 644 |
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<![if ! IE]> <![endif]>100±5 |
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<![if ! IE]> <![endif]>min 35 |
0.5x45° |
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ø26±0.1 |
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min ø40 |
P301 643 |
8 |
L1310051 • Rev AB • Feb 2014 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Tools
Tools (continued)
Torque wrench 0 - 70 Nm. 13 mm socket spanner. 2.75 - 5 and 6 mm Allan key. 12 mm screwdriver.
2 mm screwdriver.
13 mm ring spanner. Plastic hammer. Tweezers.
These tools are not available from Danfoss.
L1310051 • Rev AB • Feb 2014 |
9 |
Service Manual |
Hydrostatic Steering Unit Type OSPD V2 |
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Disassembly
Disassembling OSPD V2
Disassembly
Place the unit in the holding tool on gear set end.
Screw out the adjusting screws for shock valves (25).
O-ring (40) is fitted on adjusting screw (25).
Remove the springs with trust pads for shock valves (26).
Remove the balls for shock valves (27).
10 |
L1310051 • Rev AB • Feb 2014 |
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