How do you remove the fan clutch off a water pump? - Diesel Forum - TheDieselStop.com
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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 10-08-2010, 01:50 PM   #1 (permalink)
BCM
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How do you remove the fan clutch off a water pump?

I need to replace my water pump on my 93 ford f250 7.3 turbo diesel, I need to find out how to remove the fan and fan clutch off the water pump so I can replace the pump. I thought I just needed to remove the 4 bolts behind the fan clutch were it mounts to the water pump pully but it looks like those need to be removed and then some how the fan clutch has to be unscrewd off as well. How do you remove the fan clutch from the water pump? Thanks for any help.
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Old 10-08-2010, 02:20 PM   #2 (permalink)
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You will need the tool made for that big nut on the back side of the fan. You can rent for free (desposit) from AZone, or buy the set from Harbor Freight. It's also available from most any A/P store. Just make sure it is for the FORD, as there are different sizes depending on auto maker.
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Old 10-08-2010, 02:33 PM   #3 (permalink)
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Chuckster, later body style plus serpentine belt, but isn't it left hand thread like the '91's and earlier?
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Old 10-08-2010, 02:34 PM   #4 (permalink)
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Looks like this

Wilmar W80585 - Wrench Set | O'Reilly Auto Parts

The big wrench goes on the nut and the other part attaches to a breaker bar and strattles two of the bolts on the pully to hold it from turning.
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ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
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Old 10-08-2010, 02:37 PM   #5 (permalink)
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Quote:
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Chuckster, later body style plus serpentine belt, but isn't it left hand thread like the '91's and earlier?
His is '93 so it should be the same as my '94...LEFT hand threads
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ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

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Old 10-08-2010, 03:13 PM   #6 (permalink)
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Yes it says left hand threads for fan on the fan shroud,So one of the tools ataches to two of the nuts that hold the pully to the water pump and the the other tool is a rench that fits the big nut behind the fan clutch. So I will go and find the tool thanks for everyones help
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Old 10-08-2010, 03:21 PM   #7 (permalink)
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Guys have different ways of doing it. Years ago I bought the correct sized end wrench (1 7/8?) and before removing belts I wedge a wad of shop rags between a belt and pulley to keep the fan clutch from turning, then whack the wrench with my heavy rubber hammer clockwise direction.
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Old 10-08-2010, 03:24 PM   #8 (permalink)
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Quote:
Originally Posted by LMJD View Post
Guys have different ways of doing it. Years ago I bought the correct sized end wrench (1 7/8?) and before removing belts I wedge a wad of shop rags between a belt and pulley to keep the fan clutch from turning, then whack the wrench with my heavy rubber hammer clockwise direction.
Others have posted about using a tapered pry bar and/or an air chisel and rapping it good on one of the flats of the nut..not a good idea
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ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
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Old 10-08-2010, 03:28 PM   #9 (permalink)
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People will tell you all kinds of crazy stuff. When I was trying to pull my pitman arm I had a Kragen employee suggest I whack it with a hammer just so, which is a nice way to trash your steering box. Napa had precisely the right puller, though.
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Old 10-08-2010, 10:24 PM   #10 (permalink)
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Or if you are stuck in a little farm town in Vermont with nothing but time and a cutting torch you can make your own. (It was actually for my old 6.9, I would remove 2 pulley bolts and bolt them thru the holding tool.

t
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Old 10-08-2010, 11:50 PM   #11 (permalink)
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I found the tool at Napa and will finish my water pump replacement tomorrow thanks for all the help everyone.
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Old 10-09-2010, 01:17 PM   #12 (permalink)
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So if i'm standing infront of my truck looking at the motor the big nut behind the fan clutch needs to turn towards the drivers side to loosen right?

Also I need to replace my fuel filter, do I just remove it and install the new one or is there something else I need to do like drain the water or something out of the old one before I remove it?
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Old 10-09-2010, 01:41 PM   #13 (permalink)
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Quote:
Originally Posted by BCM View Post
So if i'm standing infront of my truck looking at the motor the big nut behind the fan clutch needs to turn towards the drivers side to loosen right?

Also I need to replace my fuel filter, do I just remove it and install the new one or is there something else I need to do like drain the water or something out of the old one before I remove it?
YUP!! and it might be easier with the belt still on.

As far as the fuel filter, just unscrew it and then fill the new one with fresh fuel or an additive, or like I do with SeaFoam.
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1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here

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Old 10-09-2010, 04:11 PM   #14 (permalink)
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I'm looking to order a new fan clutch(Happy Chuck? ) and the description says clockwise rotation as viewed from the front of the vehicle...I'm sure my shroud says left hand threads, so, from the front of the vehicle, if the wrench is sitting at the 12 'O Clock position, does it need to turn to the Pass or Driver side of the vehicle to loosen?

P.S. The vehicle isn't here right now, otherwise I would just figure it out. Thanks guys!

Also Chuck, that tool you linked to does not specify our diesel, does it still work? Napa wants $75 for their tool, and the other wrench set on Oreilly's site is listed at $125.

I like the sound of $20, but I want to make sure I spend it in the right place.
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Old 10-09-2010, 04:26 PM   #15 (permalink)
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I got the $20 tool and it's not big enough, the $20 one is for rangers and f150, the auto motive store by my house had it for rent, you just put down $75 and you get $75 dollars back as long as you return it in 24 hours. and the fan clutch turns towards the drivers side to loosen so righty loosen lefty tighten. thanks for everyones help.
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