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Liebherr MK 140 Mobile Construction Crane

Maker:  WSI Models
Model No:  54-2003
Scale:  1:50
Review Date:  October 2019


WSI Index
Mobile Crane Index


Cranes Etc Model Rating
Packaging   (max 10) 9
Detail   (max 30) 27
Features   (max 20) 17
Quality   (max 25) 20
Price   (max 15) 11
Overall   (max 100) 84%

Footnotes


 
Liebherr MK 140 Mobile Construction Crane Video [Youku Video]
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Liebherr style box.
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Very impressive.
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Carrying extra counterweight on board. It is road legal in Cranes Etc land.
 
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Smart looking cab.
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Nice wheels.
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Very detailed outrigger beams. Not quite straight under load.
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All winches are modlled.
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Looks great.
Detailed cab.
A very good profile can be achieved.
Trolley parked when using full luffing mode.


The Liebherr MK 140 Mobile Construction Crane is a 5 axle machine with a maximum lifting capacity of 8 tonnes.  Depending on configuration it can lift almost 2 tonnes at the maximum radius of 65m.  The jib can be angled up to 70 to give a maximum lifting height of 94m.

Packaging

The model comes in a Liebherr branded box and inside it is packed within expanded polystyrene trays. Although the model is secured to the bottom tray with twist ties, they are soft and easy to remove. 

The review model had no defects or missing parts.

A 24 page manual provides some information about the real machine.  It has an illustrated parts list and many colour photos describe the assembly.

There are many parts to fit, and it is a complex piece of model engineering.  It is well made but care needs to be taken not to force any parts during erection, or more particularly when folding it up.

To display the model properly in transport mode it has to be fully built up and rigged first, and then folded up.

Detail

The underside of the carrier is very detailed with the steering, suspension and transmission parts all modelled.  The tyres have a decent tread pattern.  The wheels are different on driven and non-driven axles.

The driving cab has a cable protection guard on the roof and twin beacon lights.  The lights are finely detailed and there is a number plate.  The interior detail is very good too.

Behind the cab the engine area is highly detailed with excellent mesh grilles.  Diamond plated surfaces are used elsewhere, and there are two folding access ladders.  A highlight is the many tiny warning graphics.  The tool carrier at the back is fitted with a detailed metal light bar.

The outriggers have metal beams with smooth faced pistons.  There is excellent graphics detailing on the beams and posts. Four plastic spreader plates are included.

The crane body continues the high standard of detailing and the lines of the body are only broken by small access holes for the key to turn the winches.  A metal handrail has to be fitted.  All winches are modelled, including the tower raising winch although it is not reeved.   At the tower base there is a spooling drum for the control cables to run to the cab, although it is empty and would have looked nice with some rope on.  A pin is used to lock the tower upright, although it is off colour compared to the rest of the model.

The ballast is provided as three separate parts and they have sharp graphics.

The tower is a three stage telescopic structure.  It continues the high level of detailing with intricate pipework modelled. There is a metal ladder rail section attached to the lower part and the two sections above are fitted by hand when the tower is extended as having the rail telescope was probably too great a modelling challenge in this scale. 

At the top of the tower is the cab winch and this connects to the cab which is a good looking part with a detailed interior just visible through the tinted windows.

The jib is metal throughout and the manual states that for the first time in a model like this it is modelled in aluminium to reduce weight compared to diecast metal.  It is fully triangulated and also has the work lights detailed.  The jib is mechanically complex. The assembly ropes, cables and ties are made to tight tolerances to enable a good looking jib profile which was very good on the review model.  It was possible to adjust it slightly to improve the profile further.  Small metal pulleys are used throughout.

The trolley is plastic, and both it and the metal hook for it have tiny metal pulleys.  A single line metal hook is also included for use in full luffing mode.  The hoist rope tying off point and luffing mode pulley is a plastic part which can be clipped on at various locations on the jib.

A Liebherr flag advertising the VarioJib function is provided as a load to hang from the hook in luffing mode. A solid metal Liebherr-branded load block is also included.

Features

The carrier has independent steering on each axle so all modes of steering can be reproduced and the range of movement is good. Each axle has sprung suspension.

The outriggers can be deployed and are strong enough to support the weight of the model when erected, although movement in the beam joints means they are not perfectly straight under load. 

The ladders to the carrier deck can be unfolded.

Variable counterweight configurations are possible and the full counterweight helps to improve stability of the model.

It is possible to pose the crane as if undergoing the phases of erection although this cannot be carried out by operating the winches alone as various hand manipulations are required.  When the crane is erect it is stable, but the lifting capacity at long radius is limited.

A key is supplied to operate the various winches. 

The cab can be raised and lowered up and down the mast. 

The jib can be unfolded and either posed horizontal or luffed at an angle just like the real crane.  Extra jib sections enable the crane to have a full luffing mode with a 70 degree angle, and when displayed like this the model is nearly 2m tall.

The hook can be raised and lowered, but particular care is required to maintain the hoist rope on the winch drum.  It easily runs off the side of the drum and gets snagged which is difficult to fix.  If the model is only to be obtained and displayed in the erected condition then the arrangements work.  But if it is intended to display the model in transport mode or use the hoist function than replacing the hoist rope with something with less stiffness is strongly recommended.

The trolley has to be positioned by hand. However, the trolley winch is provided and there is some rope wound on it, and some of the pulleys needed for the trolley function are modelled.

The winch for raising the tower and the pulleys for that function are modelled.  A skilled modeller may be able to reeve it up in an acceptable fashion.

Quality

This is a high quality technically complex model and so some parts are delicate, but there is limited use of plastic.

The paintwork is very good and the graphics are excellent.

Price

It is good value given the complexity and size.

Overall

It is great to see Liebherr have invested in getting a model of the very complex MK 140 manufactured, and WSI have produced a very nice, highly detailed model.  It is not really a model for a beginner, but time spent with it is rewarded with an outstanding model.

Footnotes

The model first appeared at the BAUMA exhibition in April 2019, and became generally available in October of that year.

 
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The many parts and manual out of the box.
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Storage platform at the rear.
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Detailed undercarriage.
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High detail around the carrier engine.
 
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Big equipment carrier.
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Erection poses can be simulated.
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Unfolding.
Load block on the hook.
Fully erected in trolley mode.
Fully erect it is over 2m tall.