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11-15-2020, 02:52 PM | #1 |
Senior Member
Join Date: Jul 2016
Location: Missouri
Posts: 424
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Water pump shaft nut
I have the Model T service manual, and it is great, except there is nothing on the water pump. I have some seepage from around the shaft nut area. Not a big deal, but the nut is loose. It turns easily, but I didn't want to disturb it until I can find out how tight it should be. Just snug? Since the shaft spins I don't know if I should tighten it very much. Thanks 23 T
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11-15-2020, 03:42 PM | #2 |
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Join Date: May 2010
Location: Portland OR
Posts: 6,340
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Re: Water pump shaft nut
Except for the very early models, T's didn't have a water pump so you will not find anything in there on water pumps. There is packing behind that nut that may need replacing or the steel shaft is pitted and will never seal. Google; mtfca; water pump
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11-15-2020, 03:54 PM | #3 |
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Join Date: Aug 2014
Location: Rhinebeck, NY
Posts: 761
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Re: Water pump shaft nut
Tighten the nut just until the dripping stops. You may need to add packing.
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11-15-2020, 04:19 PM | #4 | |
Senior Member
Join Date: Jul 2016
Location: Missouri
Posts: 424
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Re: Water pump shaft nut
Quote:
That explains it. Thanks |
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11-16-2020, 01:58 PM | #5 |
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Join Date: May 2010
Location: Longbranch, Washington
Posts: 513
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Re: Water pump shaft nut
You might consider tightening the pak nut while the engine is idling to prevent it locking up the shaft - after tightening & shutting down, make sure upon the next re-start, you verify the fan belt is turning prior to taking off !
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11-19-2020, 08:56 AM | #6 |
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Join Date: May 2010
Location: Burton, Texas
Posts: 681
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Re: Water pump shaft nut
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11-19-2020, 10:38 PM | #7 | |
Senior Member
Join Date: Jul 2016
Location: Missouri
Posts: 424
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Re: Water pump shaft nut
Quote:
I don't have a temperature gauge. Is that something that you add, or is it the radiator cap gauge? Thanks |
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11-20-2020, 09:19 AM | #8 |
Senior Member
Join Date: May 2010
Location: Burton, Texas
Posts: 681
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Re: Water pump shaft nut
I have radiator cap gauges/motor meters on both of my Model T's, my '22 roadster and my '27 touring. I've owned both since 1988. The '22 never had a water pump but the '27 had one for about 10 years. I find these motor meters useful but also have a hand held laser thermometer which I feel is more accurate. If you check the MTFCA forum you can find many arguments and suggestions concerning water pump use. Most recommend not using them and the reasons are well explained there. In summary, the Model T cooling system was not designed to use a water pump but they are often used as a band aid fix to cooling system problems.
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