Fan Clutch

[bigcountrysg]

Ok my fan clutch will not disengage. I mean it is fully engaged all the time. Do I need a new clutch, if I tap it with a hammer will it disengage. Anyone else ever have this problem.

[J-ROCK]

Yep it's toast.
I wonder how many people here run electric fans, that would be a nice upgrade a ton of drag off the engine. I know it's the first thing I do to any of my gas engines and it makes a world of difference.

[strokin_early_99]

I tried it. The twin fans I had lugged the alternator down and fried it in a week. I put the fan back on and that was 5 year ago. Returned the electric fans and never even thought of it again.

I look at electric fans on a diesel are for trailer queens and not daily drivers. But that is me. Just replace the hub/fan and be done.

Keep Strokin'

[J-ROCK]

If you wired your dual fans properly then you shouldn't have had any issue... that or the alt. was weak to begin with. For the cost of a new hub I'd research your options.
When replacing anything I always prefer to upgrade... but thats is just me lol.

[NCHornet]

Getting that old fan clutch off can be a little tricky too. I had to rent the tools from AZ and they gave me the wrong set, of course I didn't know unitl I had the truck torn down, you need the set with a 1 7/8" IIRC, Two people are really needed here, at least I did, I had to use a breaker bar to get mine loose. Some swear you can take a air chisel and hit the edge of the nut and it will spin right off, leave the fanbelt on for more resistance. The old one is toast so you really can't hurt it. This is the way we use to remove the nut on table saws, a nail set and a hammer, we never took the time to get the wrenches. This is not a opposite thread fan like some vehicles, righty tighty, lefty loossy. If you already knew this great, maybe somebody else can use the info,
Good Luck

[Blue01F250]

All I've read says that the electric fans don't move enough CFM compared to the mech fan..

[J-ROCK]

Now that I can understand but at the same time the make some pretty potent electric set ups, my rockcrawler uses electric fans and it almost runs too cold and not much more extreme duty then offroad.

[Blue01F250]

Yah, I have no personal experience with it -- just what I have read

Thought I'd pass that possible problem along

[STLstroker]

i have had the problem with getting the fan nut off and actually failed to get it off yesterday. with two people and AZ wrenches all i got was busted up hands and a half stripped nut. I am running out of ideas to get it off. I have heard you can take the water pump off with the fan attached. But either way i need to get that fan off. Suggestion?

[NCHornet]

Get a breaker bar around that wrench and it will come loose. I used a piece of box channel that they make carports out of. If you have a air chisel hit the left side of the nut on the down stroke and it will spin right off. You are replacing it anyway. Don't give up you'll get it but two people is a must!!