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06-01-2023, 08:28 PM | #21 | |
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Join Date: Jan 2022
Location: Rochelle Park, New Jersey
Posts: 85
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Re: Looking for expert opinion to check my work.
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06-02-2023, 06:32 AM | #22 |
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Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,820
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Re: Looking for expert opinion to check my work.
The shaft does not look bad. Take the water pump off the engine so that it will be easier to work on. While you are at it you can check the boss in the head to see if it is keeping the shaft from moving aft. Fit the fan on the shaft without the key and see if it still rocks back and forth. You don't need to put the nut on. If a good fit then put a new key in and again check the fit. If still good then tighten the nut and put the cotter key in. You can use Loctite on the shaft (WITH THE KEY) to help keep the fan in place. If you want you can paint the pump add some packing if needed. If you cannot get the fan to seat correctly then you need a new fan and/or shaft. If the key is keeping the fan from seating properly, you can dress the key with a file or grinder. Do not change the thickness, just the height.
If the nut was loose the fan can chew up the key. Or if the key was the wrong size or installed incorrectly it could keep the fan from seating properly. You may need to pull the radiator forward to be able to remove and install the pump. It will rock forward if the top radiator hose is loose and rods are removed. Bolts are available to mount the water pump that look like nuts and studs. This makes it easier to remove and install the pump. They are out of stock at Snyders but other vendors may have them. See https://www.snydersantiqueauto.com/p...9241&cat=41793. A dripless water pump is a nice thing.
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A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. Last edited by nkaminar; 06-02-2023 at 12:37 PM. |
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06-02-2023, 12:00 PM | #23 |
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Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,371
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Re: Looking for expert opinion to check my work.
If the fan was run loose for a length of time, it may have damaged the internal taper. The steel ones can take abuse better but the aluminum type is the only two blade type fan available new these days. Some reproductions have issues with rubbing the water pump housing but the late reproductions seem to fit OK. I'm running one right now and it's working. Tapered shafts should be assembled clean and dry using proper torque. If a person uses anti seize, it can slip a bit and start working on the shaft. The modern water pumps have a stainless shaft and some don't have a very well made taper on them.
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06-05-2023, 06:50 PM | #24 |
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Join Date: Jan 2022
Location: Rochelle Park, New Jersey
Posts: 85
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Re: Looking for expert opinion to check my work.
Just to keep everyone in the loop while I'm waiting for my parts to arrive, I took the water pump off today and at least it's still in one piece, with some scuffing on the shaft where the fan was sitting.
A customer service agent from C.W. Moss responded about the fan and said I need a nylon washer and collar set that's supposed to go on the shaft to make the fan sit correctly. That's one of the parts I have coming, so we'll see. I'll give an update once I reassemble everything, and even give a video again if possible. |
06-05-2023, 08:36 PM | #25 | |
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Join Date: May 2010
Location: Clinton,WA/Whidbey Island
Posts: 4,088
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Re: Looking for expert opinion to check my work.
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06-05-2023, 09:40 PM | #26 | |
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Join Date: Jan 2022
Location: Rochelle Park, New Jersey
Posts: 85
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Re: Looking for expert opinion to check my work.
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Here is what the rep said in his message: "Hi John, Sometimes on a Model A you need to use a Water Pump Set Shaft Collar to stabilize the fan. It isn’t always necessary but in your case it is. The part number is A-8511-C. This collar corrects the back and forth in a fan (what you are now experiencing) Sincerely, Troy Williams CW Moss Ford Parts" From what I saw, the collar sits at the bottom of the shaft against the housing, and then the fan sits against that to keep it from moving up and down the shaft. There was a guy on YouTube that was rebuilding a water pump and showed that collar in place. This is the link to the collar piece: https://www.mikes-afordable.com/product/A8511C.html And here's the link to the YouTube video (he shows it around the 50 second mark): https://youtu.be/Wcd-zIA1YrE |
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