What do these electrics do?

[Woodworks]

Picked up a second hand forwarding crane. It has a pair of hydraulic hoses but also an electric cable with a 7 pin plug. I have used the crane perfectly well with just the hydraulics and have no idea what the electrics are for.

 

A couple of pics.

[Brushcutter]

Does it allow you to use extension and grapple on buttons on top of the the joysticks?

[Woodworks]

Does it allow you to use extension and grapple on buttons on top of the the joysticks?

 

Sorry you lost me

 

I am completely green with cranes and their controls.

[Brushcutter]

Sorry you lost me

 

I am completely green with cranes and their controls.

 

I take it the middle two controls are for the legs.

The other two will be slew and boom and rotator and main boom. You have an extension in out and open close grapple to go somewhere. These can either go on little buttons on the top of the joystick that is controlled by the electrics. Or they're mechanical which means the joysticks sort of twist.

 

If its the latter i can only figure the electrics could be to change the speed up or down, or power lights.

[Woodworks]

The open and close grapple is another lever which oddly I can't see in the picture but it is in the middle the other side of the pair of levers which you rightly say are the legs. It all works fine and I have used it a few times with no apparent missing movement.

[Dean Lofthouse]

Is there any limit switches on it ?

 

ie: will only operate when the legs are out or other saftey cut out switches

[Woodworks]

No apparent switches Dean.

[Brushcutter]

What make and model of crane is it.

[Woodworks]

It's an old Mowi P20

 

There is a picture on the Fuelwood website under the 650 trailer but I can't post a link due to computer troubles. Computer troubles fixed by turn it off turn it on again haha

 

http://www.fuelwood.co.uk/Timber-Cranes-and-Trailers/650.aspx

Edited May 10, 2015 by Woodworks

[Brushcutter]

Apparently its electrical on/off switch. I'm guessing plugged in and turned on you can disable the crane.