Do a search , it has been mentioned so many times.

It appears that the silicone based fluid can not be replaced, if so it has to be around 80 something percent, the thin plates have microscopic burrs all over them.

At present we do not know of any way to service the VCU.

Ianh1 from Aussieland had some ideas about doing away with it, as did Mad Hat Man and Co., search for 2wd/4wd and Mondo mode.
 
nope - but give it a try - if yu got nothing to lose - its by peeps trying out new things we learn wot can and cannot be done.
 
We recondition these units, but you cannot buy the fluid, we have had to get the fluid especially made up in a large (and expensive) quantity. I searched for months to get the right fluid and only found 1 place in the world to supply it. You also need special jigs to reassemble the units. Trust me, its not worth t for 1 unit. ;)
 

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