6.13.2
Working hydraulic circuit
Pump
Variable-displacement pump that supplies oil when
needed.
Pump capacity
•
73 l/min at engine speed 2 200 rpm
•
Alternative equipment pump: 90 l/min at engine
speed 2 200 rpm
Maximum pressure at 1 500 rpm
19.6 MPa (196 bar)
Shock valve opening pressure of pump
23 MPa (230 bar)
Shock valve opening pressure of working hydraulic
circuit
20 MPa (200 bar)
Supplies oil for following functions
•
Steering
•
Hydraulic lift
•
Auxiliary hydraulics
•
Trailer brake valve (extra equipment
Oil type
Valtra grade: Valtra Hydraulic 46
DIN-grade: DIN 51524-3 HVLP
Valtra grade: Valtra Transmission XT60/XT60+
•
Classification: Valtra G2-08/G2–B10
•
API-grade: GL-4
Bio-oil
1)
Standard ISO 15380, class HEES
1)
Bio-oil can not be mixed with mineral oil.
Oil volume
Available volume of oil for auxiliary hydraulics
(maximum longitudinal inclinations 10 degrees)
min. 30 litres and max.40 litres
6.13.2.1 Valves for auxiliary hydraulics
Rear, standard
Two valves with separate control levers, adjustable to
one- or two-action.
Valve 1 has 3 positions, (out---hold---in), spring return
to centre position, out-position can be locked
mechanically.
Valve 2 has 4 positions, (out---hold---in---floating),
spring return to centre position, floating is the locked
position.
Rear, extra equipment
•
two valves
•
oil flow control valve
•
a trailer brake valve
Front, extra equipment
•
two electrically controlled adjustable valves for
using the front loader or front linkage
•
pair of quick-action couplings
6.13.2.2 Counter pressure when using the return connection for auxiliary
hydraulics
Flow, temperature
Return connection counter pressure
(1/2 inch connection)
Return connection counter pressure
(1 inch connection)
50 l/min, 50°C
4 bar
3 bar
50 l/min, 10°C
9 bar
5 bar
6. Technical specifications
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