Liebherr LH 80 C Litronic - Manual (Page 14)

14 Special timber handling machines from Liebherr
Travel Drive
Stepless hydrostatic travel drive
Design
_________________________ Swash plate type variable flow pump and two
varia ble axial piston motors in closed loop circuit
with one axle transfer case. Direction of travel in re-
versed by changing the flow-direction of the
variable-displacement pump
Filtering system ______________ Suction return line filter for closed circuit
Control ________________________ By travel and inching pedal. The inching pedal makes
it possible to control the tractive and thrust forces
steplessly at full engine speed. The Liebherr joystick
is used to control forward and reverse travel
Travel speed range ________________ Speed range 1 ____________________________ 0 – 10.0 km/h
Speed range 2 and A2 ___________________ 0 – 20.0 km/h
Speed range A3 __________________________ 0 – 40.0 km/h
The quoted speeds apply with the tyres that are
standard equipment on the loader
Axles
Four-wheel drive
Front axle
___________________________ Fixed
Rear axle ____________________________ Centre pivot, with 13° oscillating angle to each side
L 550 L 556 L 566 L 576 L 580
Height of obstacles which
can be driven over ______ mm 460 460 490 490 490
With all four wheels remaining in contact with the
ground
Differentials _________________________ Automatic limited-slip differentials
Reduction gear _____________________ Planetary final drive in wheel hubs
Track width _________________________ 2,000 mm with all types of tyres (L 550, L 556)
2,230 mm with all types of tyres (L 566, L 576, L 580)
Brakes
Wear-free service brake ___________ Self-locking of the hydrostatic travel drive (acting on
all four wheels) and additional pump-accumulator
brake system with wet multi-disc brakes
(two sepa rate brake circuits)
Parking brake ______________________ Electro-hydraulically actuated spring-loaded disc
brake system on the transmission
The braking system meets the requirements of the EC guidelines 71/320.
Steering
Design ______________________________ “Load-sensing” swash plate type variable flow pump
with pressure cut-off and flow control. Central pivot
with two double-acting, damped steering cylinders
Angle of articulation _______________ 40° (to each side)
Emergency steering _______________ Electro-hydraulic emergency steering system
Operator’s Cab
Design ______________________________ On elastic bearing on rear section, soundproof
ROPS/FOPS cab. Operator’s door with optional
sliding window, 180° opening angle, fold-out window
on right side with opening angle, front windscreen
made of compound safety glass, green tinted as
standard, side windows made of single-pane safety
glass, grey tinted, continuously adjustable steering
column and joystick control as standard, heated rear
window
ROPS roll over protection per EN/ISO 3471/
EN 474-1
FOPS falling objects protection per EN/ISO 3449/
EN 474-1
Liebherr Operator’s seat __________ 6 way adjustable seat with lap belt, vibration
damping and suspension adjustable for the
opera tor’s weight (mechanically sprung)
Cab heating and ventilation _______ Operator’s cab with 4-level air control, cooling water
heating, defroster and air conditioning with electronic
valve control, as well as electronic fresh/recirculated
air control, filter system with pre-filter, fresh air
filter and recirculated air filter, easily replaced,
air con ditioning as standard
Noise Emission
L 550 L 556 L 566 L 576 L 580
ISO 6396
L
pA
(inside cab) _______________ 68 dB(A) 68 dB(A) 68 dB(A) 68 dB(A) 68 dB(A)
2000/14/EC
L
WA
(surround noise) _________ 104 dB(A) 104 dB(A) 105 dB(A) 105 dB(A) 105 dB(A)
Capacities
L 550 L 556 L 566 L 576 L 580
Fuel tank __________________________ l 300 300 400 400 400
Engine oil
(including filter change)
__________ l 40 40 44 44 44
Pump distribution gearbox ______ l 2.5 2.5 2.5 2.5 2.5
Transmission _____________________ l 11.5 11.5 11.5 11.5 11.5
Coolant ___________________________ l 42 42 52 52 52
Front axle _________________________ l 35 35 42 42 42
Rear axle __________________________ l 35 35 40 42 42
Hydraulic tank ___________________ l 135 135 135 135 135
Hydraulic system, total __________ l 245 245 265 265 265
Air condition system R134a ___ g 1,250 1,250 1,250 1,250 1,250
Attachment
Geometry ___________________________ Powerful Z-bar linkage with tilt cylinder and cast steel
cross-tube
Bearings ____________________________ Sealed
Cycle time at nominal load _______ L 550 L 556 L 566 L 576 L 580
Z-bar linkage
Lifting __________________________ 5.5 s 5.5 s 5.5 s 5.5 s 5.5 s
Dumping ______________________ 2.3 s 2.3 s 2.0 s 2.0 s 2.0 s
Lowering (empty) _____________ 2.7 s 2.7 s 3.5 s 3.5 s 3.5 s
Industrial lift arm
Lifting __________________________ 5.5 s 5.5 s 5.5 s 5.5 s 5.5 s
Dumping ______________________ 3.5 s 3.5 s 3.0 s 3.0 s 3.2 s
Lowering (empty) _____________ 2.7 s 2.7 s 3.5 s 3.5 s 3.5 s
Attachment Hydraulics
Design ______________________________ “Load-sensing” swash plate type variable flow pump
with output and flow control, and pressure cut-off in
the control block
Cooling _____________________________ Hydraulic oil cooling using thermostatically controlled
fan and oil cooler
Filtering _____________________________ Return line filter in the hydraulic reservoir
Control ______________________________ “Liebherr-Joystick” with hydraulic servo control
Lift circuit ___________________________ Lifting, neutral, lowering
and float positions controlled by Liebherr joystick
with detent
Tilt circuit ___________________________ Tilt back, neutral, dump
Automatic bucket return to dig
L 550 L 556 L 566 L 576 L 580
Max. flow ____________________ l/min. 234 234 290 290 290
Max. pressure
Z-bar
linkage ______________ bar 330 360 350 350 380
Industrial lift arm _______bar 350 380 380 380 380
Technical data
L 550 - L 580