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
Revision History Table of Revisions
Date Changed Rev
Feb 2014 Torque value under assembly corrected AB
Dec 2013 First version - DITA CMS AA
2 L1310051 • Rev AB • Feb 2014
Service Manual Hydrostatic Steering Unit Type OSPD V2
Contents
Safety Precautions
Safety Precautions............................................................................................................................................................................4
Service Literature
Symbols Used in Danfoss Literature..........................................................................................................................................5
OSPD Versions, Belonging Service Literature.........................................................................................................................5
Exploded View and Seal Kit
Exploded View, OSPD V2/OSPD New Design.........................................................................................................................6
Seal Kit for OSPD...............................................................................................................................................................................7
Tools
Tools......................................................................................................................................................................................................8
Disassembly
Disassembling OSPD V2.............................................................................................................................................................. 10
Assembly
Assembling OSPD V2....................................................................................................................................................................18
Tightening Torques
Tightening Torques for Connections OSDP V2...................................................................................................................30
L1310051 • Rev AB • Feb 2014 3
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Service Manual
Safety Precautions
Safety Precautions
Hydrostatic Steering Unit Type OSPD V2
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.
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.
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.
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.
Warning
Personal Safety
Protect yourself from injury. Use proper safety equipment, including safety glasses, at all times.
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
Gear set I
39
Shifting valve
Gear set II
P301 641a
Gear set I
39
Shifting valve
Gear set II
P301 641b
Service Manual
Hydrostatic Steering Unit Type OSPD V2
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
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
16
17
13
18
16
37
1
16
18
18
17a
18
2
3
4
5
10
7
11
33
34
20
21
24
19
18
12
51
18
18
54
36
35
25
30
31
40
41
42
43
26
27
28
32
56
25
40
41
26
27
28
P301 642
22
23
Service Manual Hydrostatic Steering Unit Type OSPD V2
Exploded View and Seal Kit
Exploded View, OSPD V2/OSPD New Design
OSPD V2 Parts List
Parts list Num. per unit Item Tightening torque
Dust seal ring 1 1 Housing & spool/sleeve 1 2 Ball Ø8.5 mm 1 3 Threaded bushing 1 4 Screw below surface of housing
Shaft seal 1 5 Bearing assembly 1 7 Ring 1 10 Cross pin 1 11 Set of springs 1 12 -
6 L1310051 • Rev AB • Feb 2014
Service Manual Hydrostatic Steering Unit Type OSPD V2
Exploded View and Seal Kit
OSPD V2 Parts List (continued)
Parts list Num. per unit Item Tightening torque
Cardan shaft 1 13 Distributor plate 3 16 Gearwheel set (GWS1) 1 17 Gearwheel set (GWS2) 1 17a O-ring ø79.4 x ø2.0 mm 7 18 End cover 1 19 Washer 7 20 Screw 1 21 30±6 Nm
Pin bolt screw 1 22 30±6 Nm
Screw 5 23 30±6 Nm
Model/Code label 1 24 Adjusting screw for shock valve 2 25 Spring with thrust pad for shock valve 2 26 Ball ø3/16 in for shock valve 2 27 Seat for shock valve 2 28 6+0/-1 Nm
Adjusting screw for relief valve 1 30 Spring for relief valve 1 31 Piston for relief valve 1 32 Ball Ø3/16 in for suction valve 2 33 Bushing with pin for suction valve 2 34 Ball stop, threaded for LS check 1 35 1±0.1 Nm
Ball Ø3.0 mm for LS check 1 36 Check valve 1 37 25±5 Nm
O-ring ø9.0 x ø1.5 mm 2 40 O-ring ø6.0 x ø1.5 mm 2 41 Plug 1 42 O-ring ø14.3 x ø2.4 mm 1 43 Cardan shaft 1 51 Valve housing assembly 1 54 Do not disassembly
Spacer (present if GWS1 >/= 100 cm3) 1 56 -
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
Dust seal ring 1 1
Shaft seal 1 5
O-ring 7 18
Washer 7 20
O-ring 2 40
O-ring 2 41
Plug 1 42
O-ring 1 43
L1310051 • Rev AB • Feb 2014 7
90±1
ø46±0.5
120±2
2xø15±0.1
5±1
20±1
150±2
100±2
7x51.4°
ø64
7xø15+0.5/-0
1x45°
P301 644
0.5x45°
ø26±0.1
min ø40
min 35
100±5
P301 643
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.
8 L1310051 • Rev AB • Feb 2014
Service Manual Hydrostatic Steering Unit Type OSPD V2
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
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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