Table of Contents
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Service Manual
VSPP Steering unit
Contents
©
Danfoss | November 2019
Safety precautions............................................................................................................................................................................4
VSPP versions..................................................................................................................................................................................... 5
Exploded view, VSPP....................................................................................................................................................................... 5
Parts list, VSPP....................................................................................................................................................................................5
Seal kit for VSPP.................................................................................................................................................................................7
Required tools....................................................................................................................................................................................7
VSPP holding tool....................................................................................................................................................................... 7
Assembly tool for dust seal......................................................................................................................................................8
Assembly tool for shaft sea, O-ring / RotoGlyd type...................................................................................................... 8
Additional tools needed........................................................................................................................................................... 9
Remove shock and relief valves from housing....................................................................................................................11
Remove priority valve parts and P-check from housing..................................................................................................12
Priority valve parts and P-check details............................................................................................................................13
Remove end cover, gear set, cardan shaft, distributor plate, O-rings and valves from gear set end of
housing...................................................................................................................................................................................... 15
Remove spool/sleeve set from housing................................................................................................................................ 17
Disassemble spool/sleeve set and remove dust seal and shaft from housing........................................................ 18
Cleaning............................................................................................................................................................................................ 19
Inspection and replacement......................................................................................................................................................19
Assemble spool/sleeve set......................................................................................................................................................... 20
Assemble shaft seal and spool/sleeve set to housing...................................................................................................... 23
end of housing........................................................................................................................................................................ 26
Assemble priority valve parts and P-check to housing.................................................................................................... 28
Assemble shock and relief valves, and dust seal, to housing.........................................................................................29
Assembly details for shock and relief valves, and dust seal...................................................................................... 30
Set-up for testing........................................................................................................................................................................... 32
Shock valves.....................................................................................................................................................................................33
Steering tests................................................................................................................................................................................... 33
Start up test......................................................................................................................................................................................33
Pilot relief valve test...................................................................................................................................................................... 33
Neutral positioning test...............................................................................................................................................................34
Check for external leakage......................................................................................................................................................... 34
Tightening torques for connections....................................................................................................................................... 35
AX319758618681en-000101 | 3
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