Control and operation

Recovering, towing the machine

Note!

As a general rule, the easiest way to release the travel brakes is to use the hoses 6 for applying the external pressure and to loosen the hydraulic brakes valves 7 and to slightly disjoin them from the hydraulic motors 8.

Sufficiently lift up the working attachment of the machine so that the grab tool will not lay on the ground during towing.

If the Diesel engine cannot be started or if the hydraulic system is defective, the working attachment can be raised using an external pressure source, see also the heading "Emergency supply of the boom cylinders", previously in this chapter. As necessary, take advice in your LIEBHERR customer service.

Return if necessary the excavator in its previous state after completion of the towing procedure.

3.7Attaching and dismounting equipment parts

3.7.1Attaching and dismounting the grab on the industrial stanchion

Fig. 3-96 Attaching and dismounting the grab on the industrial stanchion

Before attaching a clamshell bucket or grapple, ensure that the required hydraulic lines for operating the grab are attached to the industrial stanchion.

Attaching and dismounting a grab should be carried out by two people.

Danger! Risk of injury.

Ensure that the machine’s operator follows the signaller’s hand signals when moving the equipment.

Attaching the grab

Position the grab with the shell fully open.