Can a clutch fan be re'coed.

[P4trol]

That's the stuff I used.

[krbrooking]

That's the stuff I used.

Did it fix your prob.
How much did you use.

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[Rossco]

I'd be interested in how you go Kev, been thinking about doing similar to mine soonish. I put a new clutch fan hub on when I did the conversion, but seems to be engaged most of the time when it probably shouldn't (don't have any overheating issues or doesn't run hot). I know this is good for cooling, but they are bloody noisy and sap a little power. This sounds like it's probably the opposite to what yours is doing, but would be keen to see if they can be reconditioned / adjusted to work as they should. I think this is defiantly worth perusing as opposed to just putting on a replacement.

Good luck, let us know how you get on.

[Winnie]

I'd be interested in how you go Kev, been thinking about doing similar to mine soonish. I put a new clutch fan hub on when I did the conversion, but seems to be engaged most of the time when it probably shouldn't (don't have any overheating issues or doesn't run hot). I know this is good for cooling, but they are bloody noisy and sap a little power. This sounds like it's probably the opposite to what yours is doing, but would be keen to see if they can be reconditioned / adjusted to work as they should. I think this is defiantly worth perusing as opposed to just putting on a replacement.

Good luck, let us know how you get on.

I did mine just over a year ago. I bought a tube of the fan hub fluid from Toyota (it's a genuine Toyota part) and it made a huge difference. Works just as it should now and solved my problem.

[P4trol]

I used all of it. It's slowish to flow, and you spread it around the circular grooves.

[Parksy]

If you have trouble finding the stuff, use shock absorber fluid used in RC cars. eBay or most hobby shops sell it. By memory i used 30k stuff. Was very thick. This is silicon oil.

[MudRunnerTD]

It's available over the counter at ant Toyota dealer. It's cheap as chips. You will need 2 tubes. Works a treat. I have the part number if you need it but you won't. Stop on at your local and ask for viscous fan silicon.

[krbrooking]

Will do Rossco.

Yeh I think I will give it a go as the cheapest replacement hub I have found is over $100 most over $300. So for the sake of all of an hours work and some $15 od silicone oil it is a way better option.

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[krbrooking]

Hey anyone that has done it how much do I need. As I think it will be crucial to get the right amount. So as it expands and contracts it will need to be the right amount to do the job properly. Too much or not enough and it will be pointless.

Just re-read your post Dazz will I use the full amount of both tubes.




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[the evil twin]

Hey anyone that has done it how much do I need. As I think it will be crucial to get the right amount. So as it expands and contracts it will need to be the right amount to do the job properly. Too much or not enough and it will be pointless.

Thats not how a viscous clutch works.
The fluid doesn't expand and contract.

The clutch works by porting fluid using a thermal spring to increase or decrease drag.
The more fluid on the clutch side the more friction to drive to the fan
The less fluid on the clutch side the less drive to the fan
With the porting all the way open IE fan clutch bimetallic spring sensing above about 80 degrees the fan should spin at better than 50% of the belt driven coupler.
That varies in the rating of the cluth tho, some may be as high as 85%.

Things are a little different on start up initially but that isn't a biggee

A viscous coupled fan has two disadvantages.
One, it loses efficiency if there is insufficient fluid to port to the clutch side, and two, it works off the temperature of the coupling not the temperature of the engine/engine coolant IE it relies on convected and/or radiated heat to decide how much air it pumps.