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1
CONNECTION TO THE TRACTOR
Depending on the type of the crane's control valve, there can be two or three connection hoses that need
to be connected to the tractor: Tank line,LS line, pressure and drain line.
2
REQUIREMENTS FOR CONNECTIONS
2.1 T
ANK LINE CONNECTION
Always connect the tank line first and disconnect it last! Tank line T should be connected to the oil tank
through the tractor's return filter. For that it is possible to use a "-"connection on the double-acting hydraulic
section (if "+" connection is used for pressure line P). If the tractor has a special connection for return line
(which goes to the tank without passing the tractor's control valve) then it is recommended to use that to
avoid the unnecessary oil heating. Model-specific information about the connections can be received from
tractor's dealer.
2.2 P
RESSURE LINE CONNECTION
For pressure line connection it is possible to use one of the double-acting control valve sections
(connection "+" for pressure if "-"is used for tank line). It is recommended that the section has a flow fix
option to get a steady flow from the hydraulic pump.
Model-specific information about the connections can be received from tractor's dealer.
PARKER L90 – V41
Manual
PARKER L90 – V41
Page 1 of 4
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Summary of Contents for Parker L90
- Page 1 PARKER L90 – V41 Page 1 of 4 Manual PARKER L90 – V41 CONNECTION TO THE TRACTOR Depending on the type of the crane’s control valve, there can be two or three connection hoses that need to be connected to the tractor: Tank line,LS line, pressure and drain line.
- Page 2 PARKER L90 – V41 Page 2 of 4 2.3 D RAIN LINE The third (the smallest) hose is the drain line and this should be connected directly to the tank without additional pressure drop (NOT through filters or tractor’s control valve etc.), in order to avoid damages to the control valve.
- Page 3 PARKER L90 – V41 Page 3 of 4 FLOWS AND PRESSURE SETTINGS 3.1 P RESSURE AND FLOW CHART Main valve Function Slewing right Slewing left Main boom up Main boom down Extension up Extension down Rotator CW Rotator CCW Telescope out...
- Page 4 PARKER L90 – V41 Page 4 of 4 MOVING THE CRANE 4.1 X CRANE PLUS When pressing the button (shown in the picture below) you can move the legs.
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