Help....! Which Viscous Fan Unit Have I Got?

[Skibum346]

Guys, Today has beena wasted day trudging around on public transport to get 1. A new water pump & 2. A Viscous Fan Spanner.

Firstly, the info I found said it needed to be 36mm.... guess that was wrong cuz it's rattling around!

Secondly, My parts list picture (Page 189 of the parts list) shows the viscous unit of the fan with a bolt goinf through the front to a "Adaptor Water Pump Drive" (ETC6104) ON my vehicle, the front end of the viscous fan unit has some kind of rotary spring (like in a watch) fitted dead centre, I can't figure out how to remove it to see if there is a bolt underneath and I can't find anything that says it should be there...

Can any of you experts out there help me to identify what's going on purlease?!   [-o<

[Skibum346]

Answered my own question in the end...

Turns out it could be from a Hot weather Disco/Range Rover! It's part no is ETC1260 and here is the info on it...

Skibum

[Steve ray]

no subject of visc fans ............ thinking of ditching mine altogether (got a nice 'wobble' to it at the moment - well worn)!

considering putting a switchable elecy fan on it - handy for turning off when wading, etc.
do the 300Tdi's really need the fan on road 90% of the time?


Thoughts anyone?
(sorry Ski .... maybe should start a new post, but I thought it's relevant to your post and maybe worth it if your visc fan is creamed)!

[Range Rover Blues]

I put an electric on the TDi to save fuel, I don't think it has.

I was going to put electric on the LSE but when I spoke to Kenlowe they advised I didn't and stick with the viscous as it moves more air.

For what they cost I'm not convinced by electric anymore, and a new viscous hub will be about £50.

[Evilgoat]

Theres probobly a bold up behind it, you bneed a fan spanner to get it out OR if you are good, a long screwdriver to tap it undone. Its a reverse thread too.

Its sometimes possible (as with the suzuki) to get behind the fan and undo the pully nuts and take fan and pully off in one hit.

[Range Rover Blues]

Not sure it applies in this case but the serpentine belt V8 has a RH threaded viscous.  Check which way it rotates before applying too much force.

[crazymac]

I've ran my 200TDi Discovery for 3 years now with no fan. I was tempted to go electric, but it runs with no problems with nothing so I've left it be!

It does have aircon fans in front of the Radiator, which I have heard come on once when having a hard time off road, I assume there is something in the circuit that trips this? I have removed all the rest of the aircon stuff.

[Range Rover Blues]

I've ran my 200TDi Discovery for 3 years now with no fan. I was tempted to go electric, but it runs with no problems with nothing so I've left it be!

It does have aircon fans in front of the Radiator, which I have heard come on once when having a hard time off road, I assume there is something in the circuit that trips this? I have removed all the rest of the aircon stuff.

Yes the airconn will switch on the electric fans whenver it's running but also when the engine gets too hot.  There are a couple of thermostatic switches on the thermostat elbow (one yellow one green on the 300TDi) and there's also one on the V8 for just this purpose.

In addition a V8 will also switch the fans on if the fuel gets too hot, even if the car is parked.

So if you binned the A/C then the fans left behind will protect the engine, though the later ones are smaller (10" as opposed to 12") and not anywhere near as good.