Category: Liebherr 81k.1

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Liebherr 81k.1 Radio Remote Receiver

The cord for the antenna got cut and we could not get the receiver to send out a signal.  It has power but on the front of the receiver, there are LED lights.  We had power but not the second light down.  It is red until it hooks up with the remote then it goes green.  We called HBC and they had us remove the cover and check all the fuses there is a very small 1 AMP fuse shown in the picture.  It had a red led next to it which meant it was blown.  We soldered a jumper with a 5 amp fuse around it and it all worked.
It doesn’t matter what length the antenna cable is for connecting to the remote.

 

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Liebherr 81k.1 won’t swing or trolley

The operator called and said the crane would not swing or the trolley have him send a picture of the remote.  IT had E 39 on it.  Looked it up and found that it was in the forbidden zone.  Had to turn key for zoning in the side panel to override the zoning and drive the crane out of the zone then switch the key back to make sure the zoning was back on.

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Liebherr 81K.1 – Tech Tip Videos

Youtube Playlist link for liebherr 81k.1

Below is a library of videos. If you have a customer with one of these issues send them the link to our Youtube channel to help free up your time.

 

Remote Functions – How to start the crane and what is on the display.  Youtube Link 

Weather Vane – How to put the crane into weather vane mode. Youtube Link

Operator greasing locations – How to grease the slew ring assembly Youtube Link

VFD Error screen location – Where to look for errors codes on VFD’s Youtube Link

Corded/Wired remote install – How to hook up the wired remote to troubleshoot wireless remote issues Youtube Link

Luffing Jib tip 45° – How to place the remote into the correct setting to raise and lower the jib tip. Youtube Link 

Battery Charger Fuse – Location of the battery charge fuse Youtube Link

Lost memory – reconfiguration – Liebherr 81k.1 Will not respond to remote inputs, it may have lost configuration. This video will show how to reconfigure the crane if that info has been lost. Youtube link

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Liebherr Crane Starts, but Will Not Operate

Remote will start the crane, but no functions work.  Display shows Trolley Position, Hook Height and Slew Angle, but no functions work.  See screen:

Note left arrow.  M511 means wind zone is not confirmed (1st clue, see “M” codes in Liebherr folder).  Right arrow indicates trolley position, but does not indicate jib length (the 0.0 below position).  Go into scaling (key switch CCW to scaling) and press F3 for scaling summary.  All icons should have a checkmark next to it.

Liebherr Scaling Screenshot

Any icons that have a “X” next to it need to be reconfirmed.  F1 to previous screen, and F2 to confirm each icon.  Must confirm the OK at the end as well.