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Old 03-21-2013, 06:20 PM   #1
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Replacing Water Pump- need advice

I've read up a whole bunch on this, but I seem to have a problem that i haven't heard others elaborate on.

I removed the radiator, the fan shroud, and then I started to remove the fan.

That's the problem... I can't get the fan off. I've been trying. For a couple hours. I bought the fan removal tool.
Others have advised to give. It some whacks to the wrench. I'm not getting anywhere.
I have tried it with the serpentine on and off, getting nowhere.

Any advice what to do?
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Old 03-21-2013, 06:23 PM   #2
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Get a good strap wrench and wrap it around the fan pulley.

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Old 03-21-2013, 06:35 PM   #3
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Not sure what engine you have but on my 4 banger, I just took the 4 bolts put that hold it on and it falls right off. I can see a couple of those bolts still on yours. The black ones at 9 and 3 o'clock in your picture.
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Old 03-21-2013, 06:36 PM   #4
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Not sure what engine you have but on my 4 banger, I just took the 4 bolts put that hold it on and it falls right off. I can see a couple of those bolts still on yours. The black ones at 9 and 3 o'clock in your picture.
Looks like the top one is missing.
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Old 03-21-2013, 06:38 PM   #5
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Yeah, i took them off... No luck.


Any idea where to get a strap wrench?
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Old 03-21-2013, 06:43 PM   #6
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you know it is reverse thread right?? may have to put the belt back on to stop it from truning. if that work if not air hammer with a center punch.
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Old 03-21-2013, 06:54 PM   #7
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Old 03-21-2013, 06:54 PM   #8
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Lowes or Home Depot should have a wrench strap.
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Old 03-21-2013, 07:00 PM   #9
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No, did not know it is a reverse thread.

Mine is a 2000. With the six cylinder.. Saw a guy on youtube with the same year... Unscrewing the fan counter clockwise...
Same on 4x4explor. .

Ugh.
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Old 03-21-2013, 07:11 PM   #10
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Old 03-21-2013, 07:17 PM   #11
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Try heating that nut with a Propane torch just the nut just to break it free
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Old 03-21-2013, 07:48 PM   #12
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I used a pry bar between the pulley bolts with counter traction. Gloves recommended if u like your knuckles. Also try putting a wrench on a pulley bolt since it is reverse threaded i believe you can push/pull. Once it goes it's pretty easy.
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Old 03-21-2013, 09:02 PM   #13
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I used a pry bar between the pulley bolts with counter traction. Gloves recommended if u like your knuckles. Also try putting a wrench on a pulley bolt since it is reverse threaded i believe you can push/pull. Once it goes it's pretty easy.
I got the pulley cover off. Just hit it all with pb blaster. The fan is still on.
I'll give that a try...
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Old 03-21-2013, 09:05 PM   #14
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There is a wide, flat wrench that fits over the 4 pulley bolts to hold it while you remove the fan clutch hub from the water pump. Obviously you don't have one, so a pry bar between the pulley bolts will hold it. And for future reference, you don't have to remove the radiator to replace the water pump.

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Old 03-21-2013, 09:06 PM   #15
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I got the pulley cover off. Just hit it all with pb blaster. The fan is still on.
I'll give that a try...
You'll want that cover on if you use the strap wrench. I just used a 12" crescent wrench and a strap wrench in opposing directions and mine spun right off. Without the strap wrench the pulley and fan spun around the belt.

The fan shouldn't be torqued all that tight since the fan spins in the direction to tighten it. In other words, it should be impossible for your fan to spin off while the motor is running.
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Old 03-21-2013, 09:56 PM   #16
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I did my water pump a few months ago and I don't remember the fan assembly being reverse threaded.

Here is another write up and says also not a reverse thread:

http://www.wranglerforum.com/f5/tj-w...up-178292.html


I actually held one of the four pully bolts with a small socket (using force to the right) and used a big crecent wrench on the pully to loosen (using force to the left)


* mine is 2005 so I may be wrong on the thread direction since you are a 2000.
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Old 03-21-2013, 10:15 PM   #17
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There is a wide, flat wrench that fits over the 4 pulley bolts to hold it while you remove the fan clutch hub from the water pump. Obviously you don't have one, so a pry bar between the pulley bolts will hold it. And for future reference, you don't have to remove the radiator to replace the water pump.

Thanks... you know, I did buy a clutch wrench set today... after reading your post, I went out and looked at the back of the package, and just realized it was for a FORD... not my Jeep. It's too narrow to cover the pully bolts. Argh.

OEM/2 pcs. fan clutch wrench set (27018) | Fan Clutch Wrench | AutoZone.com
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Old 03-21-2013, 10:22 PM   #18
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Like BLK said, get a strap wrench at harbor freight or where ever and wrap that bad boy around the pump pulley. Wrench in opposite directions and it should come loose...if not a love tap on the wrench with a BFH while holding the pulley still with the strap wrench will work.
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Old 03-21-2013, 10:43 PM   #19
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It's obvious looking at the direction of the pitch on the fan blades that it's a right handed thread.
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Old 03-21-2013, 11:28 PM   #20
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you know it is reverse thread right??
Think about it.

The fan is driven by the back side of the belt, so it rotates CCW as viewed from the front facing aft. That would apply loosening torque to a left-hand threaded fan nut.

It's much easier to loosen the fan nut before you remove the fan belt.
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Old 03-21-2013, 11:32 PM   #21
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Like I said, look at the fan blades, and what direction it has to turn to pull air through the radiator. Then think about how that direction of rotation affects thread direction.
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Old 03-22-2013, 01:04 AM   #22
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Just did my 02 4.0L and it's a right hand thread,I used combination strap wrench and a piece of wood as a wedge between the pulleys and a large crescent wrench and wacked to the left looking at the motor
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Old 03-22-2013, 09:19 AM   #23
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forget the strap wrench, when I did mine I put a 13 mm wrench on the pulley bolt and blocked it to the next bolt head. I took a large, I mean very large crescent wrench to the fan nut. it is regular thread. not reverse thread. no pics sorry but put two of the pulley nuts on the top, put the box end of the wrench on the left one, and rest it against the right one. it will lock the pulley. then turn the crescent to the left. <just got done doing my water pump. > any questions pm me.
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Old 03-22-2013, 10:17 AM   #24
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Thanks for all your input.

I went to Lowe's last night and got the strap wrench.

I was out on the vehicle until around midnight trying to get it done.
Resumed this morning.

Last night, I read some other advice under a search for "clutch fan." That advice was to take a long punch and with the clutch fan nut at level on top - to use a hammer to whack the nut with the punch. This should jar the nut loose where it can finally be broken.

The person giving this advice said he was a BMW mechanic and that' what they did for years for a similar problem.

Didn't have a punch, but used a 6" ratchet extension. Hit it a few times that way, near the pulley end. With someone pulling down on the clutch wrench with the 1/2" ratchet in it, and me holding the strap wrench down as tight as possible, the nut finally broke free.

A few other things I read, others with the 2000 Wrangler seem to have been frustrated with how hard it is to break free. Also, I believe 97-99 were the reverse rotations (according to what I read).

Now my final gripe - as I am waiting for the parts I ordered in Monday.... I just called Morris 4x4 and found out that my order for the water pump, gaskets, hoses, etc. was not shipped until today - Friday.

I live in Florida - as is their warehouse - and usually I get parts in one or two days Delivered (my Sunday order was here on Tuesday). They couldn't explain why it took four work days to fill the order.

Weighing to buy local or wait on my order.

Again - thanks to all for your advice.
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Old 03-22-2013, 10:30 AM   #25
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Also, I believe 97-99 were the reverse rotations (according to what I read).
That "reverse rotation" refers to the direction of impeller rotation. Pumps driven by the back of the belt are generally reverse rotation, since they run backwards relative to the drive pulley.

The '97-'99 models did not feature threaded fan clutches, so "reverse threads" were never an issue; there were no threads.

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