LG1550 Technical description. Crane carrier. Frame: Liebherr designed and manufactured, box type, torsion resistant, all-welded construc- tion made of high-tensile structural steel. 4 hydraulic swing-out beams with support pad jacks. Diesel, 8 cylinder, watercooled, make Liebherr, type D 9408 TI-E, output 420 kW DIN (570 HP) at 2100 min acc. to ECE-R 24.03 and ECE-R 49.02 (EURO II), max. torque 2332 Nm at 1500 min . Fuel tank capacity: 600 litres. Outriggers: Engine: -1 -1 Transmission: Allison, type CLBT 755 automatic transmission with torque converter and hydrody- namic retarder brake, 5 forward speeds, 1 reverse. Splitter gearbox with differential and differential lock, off-road range.
Heavy-duty crane truck axles, all 8 axles sprung. Axles 1 to 4 and 7 and 8 steered. Axles 1, 2, 5 and 6 have planetary reduction gears with differential locks. All axles are hydropneumatically sprung with automatic levelling. Load equalization between all axle pairs. Suspension can be hydraulically locked. 24 tyres. Axles 1, 2, 5 and 6 with single tyres, axles 3, 4, 7 and 8 with twin tyres. Tyre size: 14.00 R 25. ZF semi-unitary hydraulic power steering with 2 pump circuits. Main pump circuit driven from enginge, auxiliary pump circuit from final drive. Service brake: servo assisted air brakes acting on all wheels, dual circuit system. Hand brake:
spring-action, acting on all wheels of axles 2 to 7. Large-area, all-steel cab with resilient mountings, safety glass windows and full range of instruments. 24 Volts DC, 2 batteries, lighting to German road vehicle regulations. Axles: Suspension: Tyres: Steering: Brakes: Driver's cab: Electrical system: Crane superstructure. Frame: Self-manufactured, torsion resistant, welded construction of high-tensile steel. Con- nected to chassis by a 3-row roller slewing ring, 360° slewing range. Diesel, 6 cylinder, watercooled, make Liebherr, type D 9406 TI-E, output 300 kW DIN (408 HP) at 1900 min , max. torque 1710 Nm at 1400 min . -1 -1 Engine: Crane drive:
Hydraulically by pump transfer case and 5 axial piston variable displacement pumps with capacity control, closed hydraulic circuits. Servo control with electronic synchronizing device on hoisting winches. Energy recycling during lowering of load. All motions controlled independently by joystick selectors. 4 winches, hydraulically controlled by axial piston variable displacement pumps and planetary gears. Spring-loaded multi-disc brakes with hydraulic release. Crane control: Winches: Slewing gears: Hydraulically controlled by axial piston pump and planetary gear, spring-loaded mul- ti-disc brake with hydraulic release. Infinitely variable slewing speed 0 – 1,2 min . -1 Counterweight:
Operator's cab: 160 t, consisting of: 1 base slab of 16 t, 12 slabs of 10 t each and 4 slabs of 6 t each. Sheet steel design with safety glazing, movable sideward and inclinable to the rear, including operating equipment and check instruments. LICCON safe load indicator, hoist limit switch, safety valves to protect hydraulic sys- tem against pipe and hose fracture. 24 V DC – 2 batteries, 143 Ah each. Safety devices: Electrical system: Boom configurations. Light-weight design: Heavy-weight design: Optional features: L – LN – LD SL – SLD – SLN – SD – SW – SWN – SDW – SDWN Suspended ballast of 250 t for LDB – SLDB – SDB – SDWB. “Quick-Connection” for fast erection/dismantling of superstructure.
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