Husqvarna PT26D Workshop Manual page 52

DESIGN AND FUNCTION
Mowing position with weight transfer and
floating position
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Circuit diagram weight transfer position
By weight transfer is meant that the cutting unit's lifting cylinder receives pressure of 1.8 MPa (18 bar) on
the piston side, which lifts the cutting unit slightly from the very lowest position to a position so that the
weight of the machine is distributed and more weight is on the front wheels. Accessibility improves with
weight transfer The hydraulic oil come from the control unit and flows through the two open valves to the
lifting cylinder for the cutting unit. The pressure 1.8 MPa (18 bar) is regulated by a pressure limiting valve,
which is in the hydraulic pump for the drive system. Oil also flows through the open solenoid valve (2) on
the working hydraulics block and on to the hydraulic pump for the drive system and to the pressure limiting
valve, which limits pressure to 1.8 MPa (18 bar) and directs the excess back to the tank. A floating position
arises because the lifting cylinder's piston side is in direct connection with the tank and because the pres-
sure on the piston side is not capable of lifting the cutting unit.
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