Control and operation

Recovering, towing the machine

3 Towing hook with indication of a pulling force

4 Lashing eye with indication of a pulling force

5 Towing hook without indication of a pulling force

The indicated values are valid only when the pulling forces are applied in the middle axis of the hooks or of the eyes.

Caution!

Take care to never exceed the maximum possible pulling force. Going across the allowed pulling force could cause the destruction of the hooks or eyes, of their welding joints and / or of the surrounding undercarriage structure !

When towing another machine or emergency towing the excavator, only employ proven towing and pulling devices presenting a sufficient rated traction force considering the pulling forces which may arise during the towing operation.

Danger!

Never allow anyone to stand near the cable when the excavator is towed! There is a danger of injury due to a torn rope.

Start travelling with care so to tension the steel cables and other lashing devices slowly and progressively.

Applying the tension too brutally to a sagging cable can cause the cable to rupture.

During the whole towing operation keep the steel cable tensioned and free of kinks.

Emergency towing of the excavator

The machine may only be towed in exceptional circumstances, eg. in order to move the machine away from a dangerous place for repair.

The admissible traction force of the hooks 3 and lashing eyes installed to the undercarriage is in general insufficient to permit the emergency towing of the machine.

On principle always attach the employed steel cable or the pulling device 2 around the swing ring support on the undercarriage. As necessary set a protection under the pulling device, for instance pieces of wood, so to avoid any damage at the swing ring support.

Note!

During the towing procedure of the machine the mechanical multidisc brakes in the travel gears must remain released. Likewise the high pressure must build up in the travel motors circuits, so that the hydraulic brake valves can be opened.

6

8

7

If the Diesel engine cannot be started or if the hydraulic system is defective, the multidisc brakes must be released using an external pressure source and the hydraulic brake valves must be deactivated. As necessary, consult your LIEBHERR customer service.