Outer Limits 4x4 Board

Does anyone have a photo of a genuine Nissan fan-hub (viscous coupling) ?
I'm looking at buying one second hand, but since mine isn't a Nissan one, I have no idea what the genuine one looks like, so it would be great if I could find a photo of one somewhere.
I tried google images, but it's not an easy search to narrow down to less than several dozen pages of images.

Thanks in advance

Zook

Thanks for posting that up. I'd seen the photo from a thread on servicing Viscous Couplings, but was pretty sure that it couldn't be one off a diesel, or certainly not the Nissan one from a Diesel, because both the service bloke at my local Nissan dealer and a few members of Patrol4x4, said the Nissan ones from a diesel have a cap you remove to service them, which means you don't need to do the job with the screws like in that photo. I tried the job with the screws on a "Parault" brand one in my diesel, and whilst it did improve the "resistance" if you know what I mean, it certainly still doesn't audibly cut in like it's meant to, no matter how warm it gets.
Not to worry though, cause either way, two second hand hubs are on their way here, and I'll find out if either of them are Nissan ones by taking them to the dealer who gave me the previous info.
Thanks anyway for taking the time to post something up. Much appreciated.

That one looks like a petrol hub. As the diesel hub has 4 bolts that can be undone and the hub spilt in half. No need for trying to fill it thru screw holes.

that may well be a nissan one, as the bolts to pull it apart are actually on the other side,

to service the nissan one, remove the 4 bolts and split on 2,

also, not sure why he has tapped the 2 holes and fitted screws, but maybe they we put in deep so that it was permanantly locked, and ran full speed at all times,

It is a diesel one.

Didn't realise it was servicable when I did the refill....