Control, operation

General working methods

Danger!

When closing, the shell type bucket can lift the machine. The machine could roll away!

Closing the clamshells (2): Close the clamshells.

Avoid lifting the machine when closing the grab, by raising the stick sufficiently.

Raise the stick slightly to reduce ground pressures.

Lifting digging material (3): Close the clamshells fully. Raise the boom.

Move the machine to the unloading area (e.g. transport vehicle).

Push the stick out as far as possible to avoid danger due to the oscillating grab. Open the clamshells, dump the digging material.

3.6.7.2Multiple tine grab (industrial equipment)

The machine must be in working position.

Load

The maximum lifting capacity is attained when the load is taken up as close to the chassis as possible.

Fig.

Transporting a load

Transport the load close to the chassis, but with a sufficient safety distance to the cab (oscillating grab!) and as close to the ground as possible.

Caution!

Particularly when handling wood, it can be necessary, when working with a grab, to move the machine with raised attachment and suspended load. This will shift the center of gravity of the machine upward in vertical direction. The travel behaviour of the machine will be negatively affected.

Observe chapter 'Safe operation in material handling application'.

3.6.8Load lifting work

Load lifting work is understood to mean lifting, transporting and unloading loads using a lifting device (rope, chain etc.), where personnel are required to assist in securing and releasing the load. This includes, for example, the lifting and lowering of pipes, shaft rings or containers.

Danger!

The machine may only be operated for load lifting work if the specified safety devices are present and functioning correctly.

Machines used for load lifting work must be equipped with the following safety devices, in accordance with European standard EN 474-5:

Load lifting devices to safely secure / lift a load (option)

Safe lifting devices include, for example, load hooks which are mounted instead of the digging tool. Load hooks can also be replaced with safety hooks welded to the digging tool.

Overload warning device (option)

The overload warning device must alert the machine operator visually or acoustically if the permitted load value according to the load chart has been reached or exceeded.

Pipe fracture safety valve on the hoist cylinders (option)

The pipe fracture safety valve must meet with the requirements of ISO 8643. Load chart inside the cab

If the points referred to above are not or are only partially fulfilled, then the machine must not be used for load lifting work.

3.7Transport

3.7.1Transporting the machine safely

sport, use only suitable transporting and lifting devices with sufficient capacity of 30° and be provided with awood covering to prevent sliding. chains / wheels must be free of snow, ice and sludge prior to driving onto the ramp.

ing (crawler excavator) to the driving pedals.

tight over the loading surface and drive it carefully onto the ramp and further into the transporting vehicle.

the undercarriage by using locking bolts (only for A-equipment), after loading the machine onto the low loader.

against shifting according to national regulations for loading and transporting. ignition key and pull the safety lever up prior to leaving the machine.

in reference to limits for width, height and weight prior to the transport. passing through tunnels.

3.7.2Transporting the machine on a flatbed trailer

3.7.2.1Preparatory activities

Before driving onto the flatbed trailer, proceed as follows:

The ramp incline must be flatter than th incline angle W < = 30°. Have wedges ready.

Carefully place and secure wooden planks on metal ramp surfaces. Before driving on the ramp, clean the tires to remove any ice, snow or mud.

3.7.2.2Loading the machine onto the flatbed trailer

To drive the machine onto the flatbed trailer:

Note

1 Fixed axle 2 Oscillating axle Danger!

The machine must be driven up on to the flatbed trailer with the rigid axle 1 in front. To do this, turn the uppercarriage by 180°.

If the uppercarriage is rotated by 180° to the undercarriage, the travel and steering directions are reversed. Drive and steer with increased caution.

Align the machine precisely to the loading ramp. Drive the machine onto the flatbed trailer.

Note

Have another person guide and sign you.

Turn the uppercarriage carefully by 180º (travel direction over oscillating axle) and lower the attachment (see Fig. 3-99).

Press switch S16 down. The parking brake is applied. The indicator light in the switch lights up.

Shut down the engine, raise the safety lever. Secure the uppercarriage to the undercarriage with the bearing block. Lower the safety lever.

Turn the ignition key to the contact position and relieve pressure lines by moving the joystick carefully several times.

Remove the ignition key and raise the safety lever. Close and lock all doors, covers and panels on the machine.

To secure the machine: The machine must be secured against slipping before starting to travel.

1 Blade support, front

2 No support, front

Danger!

3 Outrigger, rear

4 Blade support, rear

Serious accidents can occur if the machine slips on the loading ramp. Secure the machine against slipping.

To do this, use wedges and a tension cable or tension chains.

Secure the machine at the points provided for the purpose using tension cables or tension chains (see Fig. 3-100). The loading points are identified on sign 45 on the undercarriage.

Secure tension cables and chains on the flatbed trailer, depending on the type.

Danger

3.7.2.3Transport route

Danger!

Driving beneath obstacles which are too low can cause serious accidents. Drive under obstacles, particularly electrical lines, with increased caution.

Check out the travel route before starting the trip.

3.7.3Loading the machine with a crane

If the machine is to be loaded using a crane (e.g. onto ships or rail freight cars), the type of suspension should be selected according to the attachment.

Danger!

The load could slip or fall if incorrectly loaded.

Only permit experienced personnel to secure loads and signal the crane operator.

The guide must position himself within view of the operator or be in voice contact with him.

Ensure that the length of the suspension gear is sufficient.

Loading a machine with a gooseneck boom:

Fig. 3-101 Suspending the machine with gooseneck boom

Only use cargo handling gear which is sufficiently dimensioned or which has been specially developed by LIEBHERR for this purpose.

Lower the equipment, retract the stick and curl the digging tool in completely. Press switch S16 down.

The parking brake is applied.

The indicator light in the switch lights up.

Shut down the engine, raise the safety lever.

Secure the uppercarriage to the undercarriage using the locking pin. Lower the safety lever.

Turn the ignition key to the contact position and relieve pressure lines by moving the joystick carefully several times.

Remove the ignition key and raise the safety lever.