Water pump questions
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Joined: Nov 2006
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Water pump questions
I am not quite finished with replacing the water pump on my 2000 excursion 7.3.
1. What is the spec for the short water pump bolts? I lost one.
2. What is the spec for the thermostat housing bolts? One broke.
3. How do I know if the fan to water pump is right enough? I rented the tool but not sure if I got it tight enough.
1. What is the spec for the short water pump bolts? I lost one.
2. What is the spec for the thermostat housing bolts? One broke.
3. How do I know if the fan to water pump is right enough? I rented the tool but not sure if I got it tight enough.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,350
Likes: 5,945
From: Lake Hartwell, GA
@akcooper9 had a similar experience to yours a while back and may be able to provide some advice.
Hopefully he will be along shortly.
Hopefully he will be along shortly.
Laughing Gas
Joined: Apr 2016
Posts: 850
Likes: 114
From: Virginia
I got my torque specs from this article. Didn't break a bolt and don't have any leaks so I guess they're right. Only thing is the thermostat housing bolt torque contradicts itself...it says 11 ft lbs or 110 inch lbs. I just went with 120 in lbs and that seems fine.
https://deadheaddiesel.com/7.3-power...ter-pump-leak/
As for the fan...I loosened it by holding an Inch and 7/8ths wrench on the nut, then had my helper give the wrench a couple good whacks which broke it loose. To tighten the fan nut, my helper and I threaded the fan back on all the way until it was spinning the pulley. Then I put the belt back on to help hold the pulley. Lastly, I held the wrench on the fan nut while my help gave it a couple of good whacks to tighten it. Haven't had any problems yet.
https://deadheaddiesel.com/7.3-power...ter-pump-leak/
As for the fan...I loosened it by holding an Inch and 7/8ths wrench on the nut, then had my helper give the wrench a couple good whacks which broke it loose. To tighten the fan nut, my helper and I threaded the fan back on all the way until it was spinning the pulley. Then I put the belt back on to help hold the pulley. Lastly, I held the wrench on the fan nut while my help gave it a couple of good whacks to tighten it. Haven't had any problems yet.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,809
Likes: 1,334
From: Elk Grove, CA
Word is they are better than OE because the stamped steelies deform under torque and are rust-prone. But you need to use a thermostat with the correct o ring with the aluminum version. And a thin bit of RTV on the o ring is not a bad idea. I'll put it on when it comes time for a new pump.
As HD Rider alluded to the fan will self tighten due to crank rotation. If it's on there it's fine.
Did you resolve the broken thermostat housing bolt? Got an "around the belt" top coolant hose?
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