PARKER L90 – V41 Page 1 of 4
Manual
PARKER L90 – V41
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 TANK 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 PRESSURE 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.
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