Husqvarna PT26D Workshop Manual page 53

DESIGN AND FUNCTION
Mowing position without weight transfer and with floating position
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Circuit diagram no weight transfer
When weight transfer is not selected it means that there is no pressure on the lifting cylinder for the cutting
unit. The valve (3), which lets through return oil from the lifting cylinder to the tank is open. The cutting unit
has the weight on its wheels (swivel castors) and in floating position is level with the ground. The valve (4)
which directs oil to the lifting cylinder is closed. The flow and pressure coming from the control unit flow
through the valve (2) on the valve block for working hydraulics to the hydraulic pump for the drive system.
The pressure between working hydraulics and the hydraulics for the drive system is 1.8 MPa (18 bar) and
is regulated by the pressure limiting valve in the hydraulic pump for the drive system. A floating position
arises because the lifting cylinder's piston side is in direct connection with the piston side and the tank.
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