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VOLVO WHEEL LOADERS

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Hydraulic system<br />

System supply: Two load-sensing axial piston pumps with variable displacement.<br />

The steering function always has priority. Valves: Double-acting 2-spool valve.<br />

The main valve is controlled by a 2-spool pilot valve. Lift function: The valve has<br />

four positions; lift, hold, lower, and float position. Inductive/magnetic automatic<br />

boom kick-out can be switched on and off and is adjustable to any position<br />

between maximum reach and full lifting height. Tilt function: The valve has three<br />

functions: rollback, hold and dump. Inductive/magnetic automatic tilt can be<br />

adjusted to the desired bucket angle. Cylinders: Double-acting cylinders for all<br />

functions. Filter: Full-flow filtration through 20 micron (absolute) filter cartridge.<br />

L60F<br />

Working pressure, maximum<br />

Flow<br />

at<br />

engine speed<br />

Pilot system, working pressure<br />

Cycle times<br />

Raise*<br />

Tilt*<br />

Lower, empty<br />

Total cycle time<br />

L70F<br />

Working pressure, maximum<br />

Flow<br />

at<br />

engine speed<br />

Pilot system, working pressure<br />

Cycle times<br />

Raise*<br />

Tilt*<br />

Lower, empty<br />

Total cycle time<br />

26,0 MPa<br />

145 l/min<br />

10 MPa<br />

32 r/s (1900 r/min)<br />

3,0 MPa<br />

4,5 s<br />

2,3 s<br />

2,9 s<br />

9,7 s<br />

26,0 MPa<br />

154 l/min<br />

10 MPa<br />

32 r/s (1900 r/min)<br />

3,0 MPa<br />

5,3 s<br />

1,3 s<br />

2,7 s<br />

9,3 s<br />

Steering system<br />

Steering system: Load-sensing hydrostatic articulated steering. System<br />

supply: The steering system has priority feed from a load-sensing axial piston<br />

pump with variable displacement. Steering cylinders: Two double-acting<br />

cylinders.<br />

L60F<br />

Steering cylinders 2<br />

Cylinder bore<br />

Rod diameter<br />

Stroke<br />

Working pressure<br />

Maximum flow<br />

70 mm<br />

45 mm<br />

386 mm<br />

21 MPa<br />

145 l/min<br />

Maximum articulation ±40°<br />

L70F<br />

Steering cylinders 2<br />

Cylinder bore<br />

Rod diameter<br />

Stroke<br />

Working pressure<br />

Maximum flow<br />

70 mm<br />

45 mm<br />

386 mm<br />

21 MPa<br />

154 l/min<br />

Maximum articulation ±40°<br />

L90F<br />

Steering cylinders 2<br />

Cylinder bore<br />

Rod diameter<br />

Stroke<br />

Working pressure<br />

Maximum flow<br />

80 mm<br />

50 mm<br />

345 mm<br />

21 MPa<br />

162 l/min<br />

Maximum articulation ±40°<br />

L90F<br />

Working pressure, maximum<br />

Flow<br />

at<br />

engine speed<br />

Pilot system, working pressure<br />

Cycle times<br />

Raise*<br />

Tilt*<br />

Lower, empty<br />

Total cycle time<br />

26,0 MPa<br />

162 l/min<br />

10 MPa<br />

32 r/s (1900 r/min)<br />

3,0 MPa<br />

5,4 s<br />

2,1 s<br />

2,5 s<br />

10,0 s<br />

* with load as per ISO 14397<br />

25

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