DIY Viscous clutch fan rebuild

[Coopz]

One thing to note if you do this like I just did turn the fan shaft up for an hour before installing as it may no work until you do this as the oil has to run into the right place

[chrisfarru]

I took a few kms before it was running ok and oil moved in the right places. It's well over 50,000 kms now after the rebuild and still running strong.

[psproule]

I put a brand new one in mine but I'm not happy with it. Was supposed to be a Davies Craig replacement but had no markings or branding. I reckon it's too tight even after 5000km of run-in and I suspect it is a cheap copy. Pity I through the original away, although it's bearing was fairly sloppy.

[Coopz]

I took a few kms before it was running ok and oil moved in the right places. It's well over 50,000 kms now after the rebuild and still running strong.

I ended up putting in two tubes lol, with one it made no difference however its now a fuel eater so when im home next week im going to drain it fully again and put a single tube in, I think 30ml in the tube? so will put in 20?

[chrisfarru]

mine is still running perfectly 80,000 kms later and that's with one full tube. So I would say chuck the whole tube in.

[RUGGA]

Just did this twice....

The first time somehow the oil vanished, now I couldn't see where 18 ml of 1000 cwt oil went, the seal looked in place the bolts were tight, there were no oil smears. The second time I put some extra sealer around the rubber, and now it seems to be working perfectly.

Trisome

I ended up putting in two tubes lol, with one it made no difference however its now a fuel eater so when im home next week im going to drain it fully again and put a single tube in, I think 30ml in the tube? so will put in 20?

mine is still running perfectly 80,000 kms later and that's with one full tube. So I would say chuck the whole tube in.

My convo today with the young Toyo spare parts guy said their oil comes in 18ml, they use 2 18ml tubes in their Toyotas.
Ok, so Chrisfarru, was your purchase of the Toyota silicon oil a 30ml or 18ml???

Trisome, you only used 18ml? what extra sealer did you use?

Coopz, I am confused, did you use 36ml?

Any updates on how the fans are performing?

Lots of ??? I know! Any help appreciated.

[Ocean]

I started out with 1 Toyota tube from Penrith Toyota not sure of the amount. It made no difference. Due to timing of trip decided not to waste time and got a new visco clutch for $260. Recently decided with the old visco I may have cleaned it out too well so to test added another Toyota tube, still did not fix the problem, free spinning with ease both cold and when up to temp. Chris's instructions are excelant unfortunately it did not fix mine.
Wonder if water crossings up to the bonnet kill the viscos, hot then suddenly cold under water?

[RUGGA]

I started out with 1 Toyota tube from Penrith Toyota not sure of the amount. It made no difference. Due to timing of trip decided not to waste time and got a new visco clutch for $260. Recently decided with the old visco I may have cleaned it out too well so to test added another Toyota tube, still did not fix the problem, free spinning with ease both cold and when up to temp. Chris's instructions are excelant unfortunately it did not fix mine.
Wonder if water crossings up to the bonnet kill the viscos, hot then suddenly cold under water?

Bloody hell Ocean, well thats cleared things up

[chrisfarru]

Rugga, mine is still running as good as the day after I rebuilt the fan. I will check the size of the tube later because I bought 2 but only used one.

[RUGGA]

Much appreciated

[RUGGA]

I started out with 1 Toyota tube from Penrith Toyota not sure of the amount. It made no difference. Due to timing of trip decided not to waste time and got a new visco clutch for $260. Recently decided with the old visco I may have cleaned it out too well so to test added another Toyota tube, still did not fix the problem, free spinning with ease both cold and when up to temp. Chris's instructions are excelant unfortunately it did not fix mine.
Wonder if water crossings up to the bonnet kill the viscos, hot then suddenly cold under water?

Ocean, did you test the bimetal strip?

[Trisome]

Mine is going fine 25,000 kms later, I used Permatex Aviation form a gasket to seal around the edges.

make sure you get that little oil scraper in the right place.

Trisome

[RUGGA]

make sure you get that little oil scraper in the right place.

Trisome

Roger that.

So just to be sure, you only used one, 18ml tube of oil?

[Trisome]

I used 2 tubes of Toyota fluid

Trisome

[Ocean]

Ocean, did you test the bimetal strip?

As per Chris's instructions, working fine