Fan Clutch Removal with SC

[Romer]

I have had my Blue Fan clutch 2.5 years and feel its time to swap the fluid. Today it was 101 deg and going up the mtn pass fully loaded with AC and aux fan on, climbed the temp a little higher than I liked (~215). Course near the top traffic slowed to a crawl which cuts the airflow. Soon as I crested the hill and started moving the temp dropped down below 190 fairly quickly (AC off)

Read lots of thread and I see the two bolts on the shroud, np.

4 bolts on the fan clutch, I will get them off.

Threads say to work the fan and clutch out through the passenger side. Looking at Sarah's stock truck that looks simple enough. Me with dual batts and the SC looks a little more challenging, especially with the TRD fan that comes with the SC.

Before I start yanking the second tray I thought I would see if that was required, or more was needed based on those with Superchargers. Looks pretty simple on a stock truck.

[gotmud]

I've been experimenting with different clutch/silicone combinations lately and have become a master at changing them out. Unfortunately, I too have dual batteries (no S/C) and have not found a way to remove the fan and clutch without removing the batteries and trays. Not a big deal really, just an extra ten minutes.

[96r50]

I have dual battery trays (no SC) and I was able to get the stock fan out and in without removing the second tray or the shroud. Just use a little bit of well placed force to flex a couple of the fan blades enough to pop it out. Eat your Wheaties!

[Romer]

Originally Posted by 96r50

I have dual battery trays (no SC) and I was able to get the stock fan out and in without removing the second tray or the shroud. Just use a little bit of well placed force to flex a couple of the fan blades enough to pop it out. Eat your Wheaties!

The fan blade that comes with the SC is larger and your method won't work. There is an outerband like a circle and it fills the entire shroud cavity

[turbocruiser]

Originally Posted by Romer

The fan blade that comes with the SC is larger and your method won't work. There is an outerband like a circle and it fills the entire shroud cavity

Ken, just a hopefully helpful suggestion but this might be the time to take that fan off and replace with the older 3VZ ( I think ?) fan that Dan has recommended off the old 3.0 V6 4Runners? IIRC the older fan is much more resistant to the flex that has caused some specific people with SC's to scuff their radiators at high RPMS. The combination of the spacer supplied with the SC, the heavier fan clutch fluid and the high RPMS you see somewhat regularly might be a problem at this point. If you are going to have to take the fan off anyway, maybe it is the right time to change it to the sturdier setup?

[Romer]

Hmm, cdan hasn't told me about that one and the bastids on vacation so I can't yell at him. Think I will delay the fluid changeout till I know more about this.

Thanks Shawn

[turbocruiser]

Originally Posted by Romer

Hmm, cdan hasn't told me about that one and the bastids on vacation so I can't yell at him. Think I will delay the fluid changeout till I know more about this.

Thanks Shawn

I'll try to find a link for you. I think if you search radiator replacement and sumotoy you should see about six separate threads on the subject! Somewhere in there the Shaman tried to help the lad with some advice about the old fan from 4Runners ( I hope I remember this right ) as having a lot more stiffness and strength. I'll try to find the thread too.


Edit: Here you go Ken!

http://forum.ih8mud.com/953879-post6.html

[george_tlc]

I recently installed the cdan-fan and a new blue clutch. HUGE difference versus the stock clutch and the ringed s/c fan.

The ringed fan barely kisses the bottom of the shroud and I did the cdan-mod to the lower shroud to ensure the new fan has plenty of clearance. The reason for the clearance issue is that the spacer that is needed to move the fan assembly away from the engine to allow for the s/c belt to fit moves the fan into near interference with the shroud.

I hadn't heard the 'roar' of the fan for a long time - obviously my stock/original clutch was toast. With the new blue clutch (haven't fiddled with the oil at this point) I easily hear the startup roar. After the install we had some 100F+ days and with engine hot I could sit at idle in the sun for 10+ minutes with the A/C blowing cool and happy.

So, definitely worth checking the condition of the existing fan related stuff since it just deteriorates slowly versus sudden death.

Yes, you will need to pull the trays to get the shroud off to get the fan off...

cheers,
george.

[Romer]

Thanks George. I have a blue clutch fan thats about 2.5 years old and was going to change the fluid.

More details or a link on the cdan fan mods please if you have them

[Romer]

Here is the conversation Turbo talked about

Originally Posted by Bruneti

I agree that the "Dead spot" in the stock temp gauge could be a pitfall of your observations. I have no experience with the S/C or the ringed fan blade, but I believe C-dan has recommended a fan blade from another toyota truck application that is not ringed and does not require trimming/balancing. I'd have to search to find the application.

Originally Posted by cruiserdan

16361-65020. 94-95 3.0 V6 truck, 4Runner, T100.

Originally Posted by LandCruiserPhil

Dan can you post a picture of your magic fan?

Originally Posted by cruiserdan

This is the only one I have at the moment:

[Romer]

Why does Dan recommend the blade on the left vs the the one that comes with the SC kit on the right?

What was the other mod George mentioned to the shroud?

[george_tlc]

Search the forum for: Tools R Us is a BAD DUDE

and you'll find the cdan-fan

cheers,
george.

[Romer]

Originally Posted by george_tlc

Search the forum for: Tools R Us is a BAD DUDE

and you'll find the cdan-fan

cheers,
george.

http://forum.ih8mud.com/80-series-te...-bad-dude.html

good stuff with his results start at post 88.

This should have gone into the other SC mods along with changing the clutch fluid.

Thanks for the help George

[turbocruiser]

Originally Posted by Romer

Thanks George. I have a blue clutch fan thats about 2.5 years old and was going to change the fluid.

More details or a link on the cdan fan mods please if you have them

Ken I put it right in my post man!

[Romer]

Originally Posted by turbocruiser

Ken I put it right in my post man!

Sorry Shawn, think you added that in the edit and I had already read your post so when I clicked on new, it passed you up.

[Trunk Monkey]

Ken, x2 on what George is talking about, I replaced my ringed fan with the 3VZ one - big difference. I had to remove the shroud to get the assembly out, but had to take it out anyway to cut it to clear the new fan blades.

My 100 has never topped 190*, even the BOTH front and rear AC's on high and going up a mountain pass. Towing.

[Romer]

Robbie told me a trick. Cut the shroud near the top nice and clean in the middle and then you can easily get the fan out. Make a little metal bracket to reconnect the parts of the shroud and then you can easily take the fan out when you need to.

[Tools R Us]

The ring fan is the original 3.slo fan, it had a few issues, most notably the tendency to come apart violently. It was replaced by the nonring that Dan is running. With the drama that the exploding ring fans caused on the 3.slo's I'm surprised TRD put them in the super kits!

[turbocruiser]

Originally Posted by Romer

Sorry Shawn, think you added that in the edit and I had already read your post so when I clicked on new, it passed you up.

No worries man I was just trying to save you some grief. I'm amazed my memory worked that well and that fast! I think that if you switch to this fan and the thicker fan clutch fluid you are really going to get some reduced temps and with less worries about the TRD supplied fan grenading on you or digging deep into the radiator rows both of which have happened to several fine folks here.