Valtra T144 - Counter Pressure When Using the Return Connection for Auxiliary Hydraulics; Valves for Auxiliary Hydraulics; Rear Linkage

Shock valve opening pressure of pump 23 MPa (230 bar)
Supplies oil for following functions • Steering
• Rear linkage
• Auxiliary hydraulics
• Lubrication
• Front linkage (optional)
• Front loader (optional)
Shared oil with power transmission
6.14.3.1 Valves for auxiliary hydraulics
Rear, standard • Two double-acting basic valves:
• Four positions: Out - hold - in - floating
Rear, optional • Two double-acting valves, one basic and one
adjustable:
• Four positions: Out - hold - in - floating
• Three adjustable modes on valve 2:
position lock - spring-return - kick-out
• Flow control adjustment on adjustable valve
2
• Three double-acting valves, two basic and one
adjustable:
• Four positions: Out - hold - in - floating
• Three adjustable modes on valve 3:
position lock - spring-return - kick-out
• Flow control adjustment on adjustable valve
3
• Four double-acting valves, two basic and two
adjustable:
• Four positions: Out - hold - in - floating
• Three adjustable modes on valve 3 and 4:
position lock - spring-return - kick-out
• Flow control adjustment on adjustable
valves 3 and 4
Double-acting valves
Type Directional control valve
Nominal flow capacity • 60 l/min in basic valve
• 90 l/min in adjustable valve
Control • With mechanical control levers
• Rear valves
Quick couplings
Standard ISO7241-1 Series A
6.14.3.2 Counter pressure when using the return connection for auxiliary
hydraulics
Flow l/min, temperature
Return connection counter pressure (1 inch)
50 l/min, 60°C 2.5 bar
6.14.4 Rear linkage
Maximum lifting force
Lifting cylinder ø Lower link type The length of the lower
links
78 kN 100 mm Category 3, quick
coupling grabs
990 mm
6. Technical specifications
- 397 -