A very hot day at the beach!!

I agree...if it was pressurized from a blown HG...my point was it doesnt matter if a d2 is flogged in sand if everything is working per factory spec they do not overheat.

Cheers

Ok so I know it's been a while but as the D2 is absolutely fine on the road and the issue only appears on the sand, other things have taken priority.
So the viscous fan does appear to be buggered, I took it for a long test drive this afternoon after changing the front prop shaft.
When I got back I left it running a good while and let it get real hot. with only a little pressure with a rolled up newspaper I was able to stop the fan! Also after whipping out the front grille, the a/c condenser appears to be in fairly bad shape. Obviously being right at the front the condenser takes all the bugs, stones and anything else that's flying in that direction. Even if the viscous fan was working properly, I find it hard to see how it could pull enough air through this condenser to cool the radiator sufficiently when working hard in the sand.
I'll change the viscous coupling as soon as I can and hope that does the trick. If not then change the condenser??

Sounds like you are getting it sorted matey.

Cheers

Even if you try the old self tappers in the viscous fan to lock it up, for testing, before you replace it. I had one locked up for years with no problems, and a lot cheaper than a new viscious hub.

Thanks Gerokent, never thought of that. Anyone else done this?