Jump to content
  • Announcements

    • Me78569

      High Idle Kit Sale   09/06/2017

      Just in time for Father Winter, we are offering a %10 Discount for the first 10 High Idle switches sold until 10/1/2017.  Just use the coupon code HighIdle at checkout to get %10 off. Visit out store to see details on the High Idle Kit.       
TFaoro

Fan Clutch

Recommended Posts

TFaoro    1,172
TFaoro

Do new fan clutches need time to "break in?"

 

I got a new one Sunday night and it still hasn't unlocked by today so I took it back and got another. The new one hasn't unlocked today either so I'm not sure if I just need to give it some time or go get another. 

Share this post


Link to post
Share on other sites
IBMobile    705
IBMobile

NO   I've never heard of that, should be good to go right out of the box.  It could be the aftermarket brand you're getting, try a different supplier. 

  • Like 1

Share this post


Link to post
Share on other sites
TFaoro    1,172
TFaoro
8 minutes ago, IBMobile said:

NO   I've never heard of that, should be good to go right out of the box.  It could be the aftermarket brand you're getting, try a different supplier. 

So both of the ones I have gotten say made in the USA, which I was surprised by. 

 

I have a buddy who works at advance auto, and the ones they have look the exact same as the ones from Napa. Literally exactly the same. I really don't want to go to the dealership....

Share this post


Link to post
Share on other sites
IBMobile    705
IBMobile

If heard of one brand performing a little different than another and of people complaining about the fan staying engaged all the time when new but I've never experienced this.

Share this post


Link to post
Share on other sites
TFaoro    1,172
TFaoro
7 hours ago, Silverdodge said:

Tyler go efan 

Can't do that.... With the truck being a tow pig during the summer I need something that'll move a lot of air!

 

I'm going to call Napa and see what they have to say. 

Share this post


Link to post
Share on other sites
CSM    671
CSM

I likely will need a new one next year... so you all go ahead and figure it out.

Share this post


Link to post
Share on other sites
JAG1    801
JAG1

Try it before you buy it at the sales counter. Should be disengaged until hot. Is that right IBM?

Share this post


Link to post
Share on other sites
TFaoro    1,172
TFaoro
1 hour ago, CSM said:

I likely will need a new one next year... so you all go ahead and figure it out.

See below

1 hour ago, JAG1 said:

Try it before you buy it at the sales counter. Should be disengaged until hot. Is that right IBM?

Even the fan I took off (which was great before the engine warmed up) is stiff off the truck.

 

49 minutes ago, Mopar1973Man said:

No. Typically the oil will be thick in the clutch so it will be stiff till the RPMs spin the oil outwards. So the try before you buy won't work.

^^^Yup

 

 

So I headed to a buddies tonight and about 15 miles down the road it disengaged for the first time! After sitting parked at his house for 3 hours or so it was locked up again when I took off. This time it disengaged after about 5 min going slow. Maybe it's starting to loosen up?? We'll see. It has a lifetime warranty, so I'm not too worried. 

Share this post


Link to post
Share on other sites
JAG1    801
JAG1

Thank you straighten out my bad about check before you buy. I do not understand how they work other than a logical disengaged when cold thinking. :poke:

 

All I know is my first gen, approaching 450 k miles, I can still spin the fan when truck sits cold.

Edited by JAG1

Share this post


Link to post
Share on other sites
KATOOM    447
KATOOM

98.5-99 call for a different clutch than 00-02.  Maybe you have the wrong year.  If you're concerned about quality, Geno's has OEM clutches.  Yes, they're not going to be as cheap as I'm sure you paid for the one you have but its an option if you get tired of messing with it..... :thumbup2:

Share this post


Link to post
Share on other sites
Mopar1973Man    3,801
Mopar1973Man
On 11/19/2016 at 10:30 AM, JAG1 said:

All I know is my first gen, approaching 450 k miles, I can still spin the fan when truck sits cold.

 

It shouldn't spin cold. The oil should be settle to the bottom and thick and it should be extremely stiff. Once started and driving a short distance the oil will spin back to the hub unlocking. 

 

 

As for my clutch...

 

  • Like 1

Share this post


Link to post
Share on other sites
KATOOM    447
KATOOM

I'm not sure what I did with it.....but I have a video of my clutch fan too. :doh: I was going to point out how tight my fan clutch is when the engine is cold.  Its always been like this too and I'd be afraid to stick anything in the way of the blades for fear of damaging something.

 

There's times when I initially start the engine (at any ambient temperature) and I can hear a slight fan roar for a second.  Sometimes it will even hold firm until I apply a little throttle too whereby I can hear the clutch loosen up.  Although never heard on the freeway unless the engine temps lean towards 205* range.  Been this way since new and has always keep engine temps in check.  Even grossing 22k up hill in 111* summer heat on the highway. :thumbup2:

Share this post


Link to post
Share on other sites
TFaoro    1,172
TFaoro

Well my fan locked up again before I headed home. 125 miles at full lock... Guess I'll go exchange it. 

  • Like 1

Share this post


Link to post
Share on other sites
Mopar1973Man    3,801
Mopar1973Man
9 hours ago, KATOOM said:

I'm not sure what I did with it.....but I have a video of my clutch fan too. :doh: I was going to point out how tight my fan clutch is when the engine is cold.  Its always been like this too and I'd be afraid to stick anything in the way of the blades for fear of damaging something.

 

There's times when I initially start the engine (at any ambient temperature) and I can hear a slight fan roar for a second.  Sometimes it will even hold firm until I apply a little throttle too whereby I can hear the clutch loosen up.  Although never heard on the freeway unless the engine temps lean towards 205* range.  Been this way since new and has always keep engine temps in check.  Even grossing 22k up hill in 111* summer heat on the highway. :thumbup2:

 

This is because the oil has settle in the bottom and requires RPM to pump it back into the hub. Mine is the same way after starting it roams for the first few seconds of leaving the driveway but once its unlocked it just like my video above. I've done this hundreds of times for people. I'll start it rev it to 1,500 to 1,800 RPM for about 10 seconds and bring it back to idle. Then I can grab a rubber hose and stop the blades every time. That first few seconds is the oil being pumped back into the hub of the fan. 

Share this post


Link to post
Share on other sites
TFaoro    1,172
TFaoro

I've got a resolution! Picked up another fan clutch today (under warranty) and put it on the truck. It took about 30 seconds for it to come unlocked. I got the engine good and hot using my radiator block trying to get the fan to come on, and it came on like it should. After cooling back down and a bit of driving it unlocked again. Case closed!

 

@Mopar1973Man you should like this video!

 

 

  • Like 1

Share this post


Link to post
Share on other sites
KATOOM    447
KATOOM

I'll take a video for you guys when I get a chance.....but I dont believe thats what my OEM fan clutch does.

Share this post


Link to post
Share on other sites
dripley    1,151
dripley

Mine definitely does NOT free wheel like that. But you can darn sure here it when it engages.

Share this post


Link to post
Share on other sites
IBMobile    705
IBMobile

I've check many a fan clutch with a plastic fan by wrapping a shop towel around my hand and grabbing a blade.  If the clutch was engaged it would just kick my hand out.  I don't think I would want to do it with a metal fan.  I've never had one that free wheeling where I could get the fan to go back wards.  These were Aisin brand fan clutches in cars.

Share this post


Link to post
Share on other sites
TFaoro    1,172
TFaoro

Bringing this back to life.... Anyone know where I can buy the factory Mopar fan clutch other than the dealer??

I ordered one from factorymoparparts.com, but I got an email this morning saying they were not in stock and they were refunding my money. I don't want to go to the dealer since they're $100+ over online factory clutches.

Share this post


Link to post
Share on other sites
jlbayes    290
jlbayes

The last time I looked in star parts they were not available. So if a dealer is getting them I am not sure where from.

Share this post


Link to post
Share on other sites
JAG1    801
JAG1

Wouldn't Cummins parts be able to get one?

 

I just checked both my trucks, both cold, the fans spin free but spin stiff. The 2001 with about 100k more miles spins a bit more firm.

Share this post


Link to post
Share on other sites
Mopar1973Man    3,801
Mopar1973Man
On 11/26/2016 at 8:18 AM, Mopar1973Man said:

 

It shouldn't spin cold. The oil should be settle to the bottom and thick and it should be extremely stiff. Once started and driving a short distance the oil will spin back to the hub unlocking. 

 

 

As for my clutch...

 

 

Still doing the same thing... 312k miles later... Still working as designed.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now




×