Water Pump 4

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Nov 13, 2012 | 06:16 PM

auden

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Water Pump 4

My 3rd waterpump on my 7.3 is shot.
Original went 115,000 mi. replacement ford pump went 30,000mi. and replacement napa went 45,000 miles. There is no way that these engines should be doing this! Navistar or someone must have upgraded pumps because this is unacceptible. Any suggestions? Thanks

Nov 13, 2012 | 06:29 PM

honeydew

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From: Florida

Quote:

Originally Posted by auden

Any suggestions? Thanks

Install a coolant filter with water pump 4

or

install an International water pump with integrated coolant filter: https://www.ford-trucks.com/forums/1...p-install.html

Nov 13, 2012 | 06:49 PM

Firefighter 1406

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From: Northern Indiana

I went with the filter system from dieselsite.com, nice system and easy install.

Nov 14, 2012 | 12:47 AM

A/Ox4

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From: Missouri

Are you maintaining your coolant? How about using ELC? Neglecting those will cause you to go through pumps. I also second the coolant filter.

Nov 14, 2012 | 01:45 AM

SpringerPop

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Joined: Jan 2002

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From: La La Land

I believe I would seriously consider checking the balance/runout of the fan/clutch/pulley assembly.

You may have bent or damaged something during the first (somewhat normal mileage) replacement that is now continuing to eat pump bearings.

Check the pressure at which your "radiator" cap actually relieves. Higher coolant pressures may cause coolant to seep past the seal and "wash out" the bearing lubricant.

Pop

Nov 14, 2012 | 03:04 AM

Stewart_H

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From: Central Coast of CA

Quote:

Originally Posted by SpringerPop

Hmmmmmm.......

For auden and Trey, how are you guys removing the fan clutch nut? With the proper tool or with an air chisel like some guys have done?

Stewart

Nov 14, 2012 | 03:49 AM

Pitcrw6

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From: Panama City, FL

X2 on what Pop said.

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Nov 14, 2012 | 11:04 AM

A/Ox4

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From: Missouri

Never used the air chisel. I always used the rent-a-tool or monkey wrench.

Nov 14, 2012 | 12:26 PM

#10

clem1226

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Joined: Mar 2006

Posts: 2,502

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From: Bend Oregon

failed fan clutch maybe?....possibility that the fan clutch is running 20 or 30%+ engaged (not enough to roar but enough to be heard if listening for it) all time adding additional steass to the pump bearing?

Nov 14, 2012 | 02:14 PM

#11

SpringerPop

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Joined: Jan 2002

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From: La La Land

Quote:

Originally Posted by clem1226

Why do you feel that additional stress would be placed on the bearing?

Pop

Nov 14, 2012 | 02:36 PM

#12

clem1226

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Joined: Mar 2006

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From: Bend Oregon

Quote:

Originally Posted by SpringerPop

Why do you feel that additional stress would be placed on the bearing?

Pop

I ponder that our fans are not precisely balanced....if they are locked a large amount of the time that imbalance may translate to osculating loads being placed on the water pump impeller shaft. ?

Mar 16, 2014 | 01:32 AM

#13

Dually4by

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Joined: Mar 2007

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From: Akron, CO

I know this is an old thread but I'm having the same issue. I am on my third water pump and on my drive home from work, I can hear squeaking from under the hood. As I suspected, the shaft on my water pump was shaking just like the second water pump I had. I can see that the fan clutch needing replacement also to be the logical reason I am replacing so many water pumps. My 7.3 has only 202k miles on it and it runs great.

Mar 16, 2014 | 06:14 AM

#14

Supercab

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Joined: Feb 2000

Posts: 5,374

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From: Palm Bay, Florida

Quote:

Originally Posted by Firefighter 1406

I went with the filter system from dieselsite.com, nice system and easy install.

+2 Excellent filter setup!

Mar 16, 2014 | 10:13 AM

#15

mueckster

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Joined: Jun 2003

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From: Damon (South East Texas)

Quote:

Originally Posted by Dually4by

I was in the same boat as you. I am on my 4th water pump replacement. Each time they were replaced I had some weepage from the seal and/or small drip when cold weather set in. The last one was an actual bearing failure, but not catastrophic. Thank goodness. I am running ELC, coolant filter, and have already replaced the cap, radiator (cracked neck) and degas bottle (crack). I decided to replace the fan clutch with the last water pump and have no signs of leaks for almost a year. I do feel the fan clutch may had been a big part of my earlier failures. So far, so good. Keeping my fingers crossed.