Liebherr Mobile Crane LHM 550

Ensure that the following conditions are satisfied:

The engine has been switched off and secured against unauthorised starting

The relevant unit has been warmed up for approx. 15 minutes

An original Liebherr oil diagnosis kit is available

Take the oil samples either directly from the housing of the relevant unit or from the oil that is drained out when the oil is changed

Drain off at least a 1/4 litre of oil before taking the sample and then fill the container with well-mixed oil

Screw the plastic hose (5) with adapter (4) onto the plastic syringe container (2)

Complete all sections of the sample data sheet (7)

- Check the air filter underpressure display (by authorised maintenance personnel)

- Check the intake and exhaust system for condition and leaks

- Spreader: Measure and adjust the gap of the brake on the tower motor (by authorised maintenance personnel)

- Visually check the Nemag shackle for cracks

- Check whether ropes are due for replacement

DANGER: Incorrect maintenance of the Nemag shackle! Load breakaway.

Observe maintenance intervals and safety notices.

In case of visible damage, replace the Nemag shackle immediately.

The engine has been switched off and secured against unauthorised starting.

Checks carried out at the intervals indicated in the maintenance schedule (lifting device + rotator).

Relevant lifting device detached according to the operation manual.

Nemag shackle detached from the rope.

Nemag shackle checked for cracks by MPI (magnetic powder inspection).

Pulleys are susceptible to external damage.

Ensure that the following conditions are satisfied:

- The engine has been switched off and secured against unauthorised starting.

- Make sure that pulleys do not chafe anywhere.

- Do not place pulleys on the ground without protective devices.

Check rope pulleys for all kinds of damage (nicks, wobbles, etc.)

- If the rope pulleys are aligned with the direction in which the rope is running and there is no evidence of wobble or other damage: No further action required.

- The rope pulleys show signs of damage. Contact Liebherr service department and change the pulleys.;

Ensure that the following conditions are satisfied:

Select the type of lubricant used

Apply extra lubrication in the areas where the ropes bend around the winch drums and the pulleys.

Apply grease with a brush. In special cases a high-pressure lubricating device is used (Follow the manufacturer's instructions). An alternative is to use solvent-based lubricants that can be sprayed on the rope.

Observe maintenance intervals (See chapter: Maintenance, Maintenance schedule).

NOTE: Third-party ropes - Select lubricants according to the recommendations of the rope manufacturer concerned or contact the Liebherr service department.

CAUTION: Broken wires and damaged spots on rope. Danger of injury when cleaning. Wear protective clothing (especially protective gloves).