Control and operation

Installing and removing the serial counterweight

Installation of the counterweight

Attach the lifting apparatus to the suspension points of the counterweight as described above.

Check the correct position of the centering pins in the bores of the uppercarriage, lift the counterweight and set it down onto the supporting girders so that the centering pins 2 insert in the corresponding bores of the counterweight.

Danger!

Never stand below the counterweight while it is hanged up on the lifting crane.

Engage the mounting bolts 3 with washers 4 and tighten. For tightening torque, see the heading "Mounting bolts of the counterweight" in the chapter maintenance of this manual.

Caution!

It is forbidden to operate the machine if all the mounting bolts of the counterweight are not installed and correctly tightened. The steel construction structures may be seriously damaged

Remove the lifting devices from the suspension points of the counterweight.

3.10Transport

3.10.1Transporting the machine on a low loader Transport route

Danger!

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

Reconnoiter the route to be travelled before starting the transportation. Pay particular attention to width, height and load restrictions on transport route.

Caution

Respect the respective local legal circulation rules and safety instructions of profession corporations and in case adapt the machine, its transportation means, loading and fasten materials before into the local legal permitted state.

For conveniences reasons, and due to its dimensions and its weight, the excavator has to be dismantled into suitable parts which can be lifted with a crane and carried with a flatbed trailer.

Use only suitable transporting devices and lifting tackle with sufficient load carrying capacity.

Before loading, park the flat bed trailer on firm and level ground and block the wheels.

3.10.2Loading the machine with a crane

If the machine is to be loaded using a crane we recommend to use the loading tools specially developed by LIEBHERR for that purpose.

Danger!

The load could slip or fall if incorrectly loaded.

Use only suitable transporting devices and lifting tackle with sufficient load carrying capacity, or if possible the special tools specially developed by LIEBHERR.

Only permit experienced personnel to secure loads and signal the crane driver. The signaller must position himself within the view of the operator or be in voice contact with him.

Ensure that the length of the suspension gear is sufficient.

The chart thereafter indicates for the heaviest parts of the excavator, the total weight, the main dimensions, the location of the lifting points L and the location of the latching points P.

Loading the complete basic machine

The

Removing the machine components:

If you employ other lifting tools that tools position 20 and 30 which has been specially developed by LIEBHERR for this purpose, make sure that they are sufficiently dimensioned.

Park the machine on a flat, even and firm ground.

Lower the working attachment to the soil, in a position suitable for a later removal of the attachment parts.

For machines with backhoe, shovel or industrial attachments, remove the working tool and the stick (see also the heading "Removal & installation of attachment parts" previously in this manual) and next prop up the boom on the soil. Remove the counterweight from the uppercarriage.

Caution!

The lifting points at the top of the counterweight (Suspension eye in sheet, threade holes,...) must only be used to lift the counterweight alone alleine verwendet werden.

Never use the fixing points 6 at the top of the counterweight as lifting points to lift the complete basic machine or the complete uppercarriage.

On machines fitted with an hydraulically removable counterweight, you must in addition:

•Remove the counterweight 17 complete with the eventual installed additional counterweight, see also the section "Hydraulic removable counterweight" before in this manual.

•Disconnect the lines feeding the telescopic cylinders of the removable counterweight at the quick couplings 19 and notice the correlation of the hydraulic lines.

Disconnection Of Quick Couplings

•Remove the mounting screws of the counterweight shell 18 and lift off the shell complete with the telescoping cylinders and lay it flatly down on the transport vehicle.

Caution!

During lowering, lifting up and transportation of the shell 18 take care that the telescopic cylinders are not damaged by knocking against or supporting the weight of any other items on the excavator or on the transport vehicle .

Caution!

The removal and installation of the boom are only to be performed by authorized and specially trained persons!

Observe all the safety regulations contained in the heading "Removal & installation of attachment parts" of this manual.

Attaching the liftling tools:

Raise the lifting tools 20 with the crane and and fix them complete with the shackles 4 on both sides to the bearing bores of the boom cylinders.

Attach the lifting tools to the bearing block while pushing in and securing the bolts 8 you have removed when dismounting the boom cylinders.

Set the lifting tool 30 to the rear part of the uppercarriage and insert the fixing bolts 55 with washers 56 and nuts 57.

Tighten the fixing bolts to the torque indicated further in this manual for the counterweight bolts.

Hooking the machine to the lifting crane:

Connect the upper shackles of the lifting devices with the lashing points of the lifting crane.

Hin

Note

Observe the below indicated value for distance L between the two fixing points, so that the both suspension cables, are approx. vertical when seen from the side. When selecting the lifting devices (cables, slings, schackles, ...), pay attention to observe the below indicated minimum length H1 !

The maximum necessary lifting forces Ff on the front side, resp. Fr on the rear side amount to approx:

Hin

Note

The indicated values for Ff and Fr are the maximum values which are in any case sufficient for the determination of the lifting tools, the lifting crane and the transport vehicle. For certain machine types, with removed side frames, ...., smaller values may be sufficient, if necessary consult your LIEBHERR after sales representative.

Danger!

Use only suitable lifting devices, in good condition and with sufficient load carrying capacity.

Always wear work gloves when working with wire cables.