Blue fan clutch mod...Thread has gone to hell, read at your own risk (2 Viewers)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Speaking of which. I put in a total of almost 3oz of 30k. One full bottle and just under half of the other.
 
After reading posts from Phil, Claudia and Kevin, I think 30k will better suit me since I'm in the middle of the blast furnace and I have the S/C. I have a feeling its going to be loud, alot.

I haven't really noticed a noise issue with it

Speaking of which. I put in a total of almost 3oz of 30k. One full bottle and just under half of the other.

I used the same amount for the blue hubs
 
Speaking of which. I put in a total of almost 3oz of 30k. One full bottle and just under half of the other.

:bang::bang::bang::bang::bang:

I only ordered one tube and just showed up, 2oz total. Leaving tomorrow for Steamboat and Utah so I guess I will just run the new clutch as is till I get the proper fluid. My local hobby stores didn't have it either.
 
Ok I think I get it now. I removed the two philip screws and saw that the entire plate in there comes out and can rotate. I turned all the way to one side of the adjustment and it opened up at 161deg. Doh! Wrong way. I'll adjust all the way to the other side and see what it nets me. BTW, and maybe I missed this in the 4000 page thread, but wouldn't bending the spring on the front net you about the same result without having to crack it open?

That is not a spring. That is a piece of bi-metal formed in a coil. Each side of the metal is a different alloy that has a different thermo-coefficient of expansion. As the temperature changes one side expands and contracts at a different rate as compared to the other causing a rotation. Once forcibly bent the designed expansion properties will be damaged and may no longer expand in a liner fashion. The screw adjustment is similar to pre-loading or positioning adjustment.
 
Speaking of which. I put in a total of almost 3oz of 30k. One full bottle and just under half of the other.

May work, possibly too much. The test that I always do; when first started, it will have to pump the fluid into the reservoir, so will be "on", throttle up (1500-2000ish rpm) and hold it. The fan will be blowing big time, within a minute or so, the clutch should disengage, the fan get quiet. If it doesn't, it has more fluid than will fit in the reservoir, is overflowing, will be "on" full time, will need to remove some fluid.

About 45ml/1.5oz works great, don't see the need for more?
 
That is not a spring. That is a piece of bi-metal formed in a coil. Each side of the metal is a different alloy that has a different thermo-coefficient of expansion. As the temperature changes one side expands and contracts at a different rate as compared to the other causing a rotation. Once forcibly bent the designed expansion properties will be damaged and may no longer expand in a liner fashion. The screw adjustment is similar to pre-loading or positioning adjustment.

If you need to be precise, could call it by it's full name, bimetallic thermostat spiral spring coil! Too much typing for me, will just continue calling it a spring and hope everyone but you will understand what is being referred to!:hillbilly:
 
May work, possibly too much. The test that I always do; when first started, it will have to pump the fluid into the reservoir, so will be "on", throttle up (1500-2000ish rpm) and hold it. The fan will be blowing big time, within a minute or so, the clutch should disengage, the fan get quiet. If it doesn't, it has more fluid than will fit in the reservoir, is overflowing, will be "on" full time, will need to remove some fluid.

About 45ml/1.5oz works great, don't see the need for more?

I will take note. I got everything mostly buttoned up but not ready to start it yet. Leaving for the weekend so I'll complete this on Monday.
 
I forget, do they all take the same amount of silicone fluid, black hub, Eaton, blue hub?
 
I forget, do they all take the same amount of silicone fluid, black hub, Eaton, blue hub?

About 1.5oz or ~45ml will work fine in all of them. The Eaton has the largest reservoir/smallest overflow hole, will easily hold 60ml+. On the Aisin clutches, adding more fluid extends the startup roar with each cold start, the Eaton has an anti drainback setup, so has little/no startup roar. Adding more fluid does nothing for performance, maybe slight improvement in fluid life, maybe?
 
Well crap. Any options for replacing the clutch #2 screws if one gets stripped in the removal process, short of buying a new clutch fan?
 
If you're serious, that would be great. I only need one.

Anyone have any thoughts about a good way to clean out all the bits once I've drilled the old bolt out?
 
If you're serious, that would be great. I only need one.

Anyone have any thoughts about a good way to clean out all the bits once I've drilled the old bolt out?

You need a tap. I can send you one as well so long as I get it back ;)

Can you remove the other side of bolt out the other way?

Send me your info
 
NLXTACY, let me check with the local toyota tomorrow and make sure they don't have any, before I put you through any trouble. Either way, thanks very much for the offer, I'd like to get this thing done the right way and not just add heavier fluid.

I've got the bolt out. I drilled the head off. Thoughts on cleaning that half to get rid of any left over shards? Brake cleaner too harsh?

And to be clear, I'm talking about one of the two adjusting bolts that's on the inside of the clutch.
 
Last edited:
You worried about shards getting inside? Or just worried about the shards in general? If you are worried about inside, I would personally use something that doesn't leave a residue. Maybe electronics cleaner.

I found it best to use an impact driver for those screws as well. I also happen to have a JIS Philip set for the impact so I knew I wouldn't have to worry about stripping it.

I can open up one of the other clutches if you need one. Let me know.
 

Users who are viewing this thread

Back
Top Bottom