The Ford Barn

Oberfranke · 09-26-2021, 11:21 AM

I have installed a new water pump: leakless/ball bearing water pump A-8502 Sny...
Since then something rattles. I have uploaded a short video: https://youtu.be/WypPcsnN6Ww
Maybe someone has an idea?
Greetings from Bavaria

J Franklin · 09-26-2021, 11:31 AM

Remove the fan belt and see if it stops the noise.

Brentwood Bob · 09-26-2021, 12:04 PM

The fan pulley taper may be worn. That wobble looks bad to me.

katy · 09-26-2021, 12:08 PM

Did you check the clearance between the back end of pump shaft and the cylinder head?

jw hash · 09-26-2021, 12:51 PM

the fan looks like it is not tight to the shaft, take a hold of the fan and check for it being loose.

Utopia Texas · 09-26-2021, 12:55 PM

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Quote:

Originally Posted by jw hash

the fan looks like it is not tight to the shaft, take a hold of the fan and check for it being loose.

but with the engine off!

Patrick L. · 09-26-2021, 12:59 PM

Quote:

Originally Posted by utopia texas

but with the engine off!

:d:d:d:d

old ugly · 09-26-2021, 03:33 PM

did you get the fan hub onto the keyway properly? just my first thought.
ou

ursus · 09-26-2021, 04:46 PM

Mine developed an intermittent vibration and soft clattering sound that was most noticeable while the engine was idling. I thought the fan seemed to be tight on the shaft but old guy showed me something. He lowered a large shop rag to where it made contact with the end of the rotating fan blades. When he did this the vibration and noise stopped. Turns out that the fan was actually loose but only so loose as to move when the engine was running.

gdmn852 · 09-26-2021, 09:24 PM

Hello on mine I had to grind down some of the cast end diameter as the repo aluminum blade was rubbing against it .

gdmn852 · 09-26-2021, 09:30 PM

On the water pump body that is.

Oberfranke · 10-09-2021, 12:27 PM

The fan wheel was actually loose, I could even move the nut slightly. Now I pulled the cotter pin, and was able to retighten the nut about 3/4 turn. Then set a new cotter pin. The shaft did not turn when I tightened the nut. The rattling was gone. After 45 minutes of driving, there was play on the fan wheel again and the rattle was back. The nut is still splined.

Keith True · 10-09-2021, 12:48 PM

Now that it's been run loose I think you are going to find the key is either destroyed,or out of position.It can also tear up the inside of the tapered part of the pully. It is pretty easy to push the key out of position when sliding the fan onto the shaft.You will think it is tight,but will start to rattle shortly.Is the fan original steel? Modern 2 or 4 blade steel? Modern aluminum? That blade is going to have to come off to get a look at it to be safe and sure.

Oberfranke · 10-09-2021, 02:21 PM

Thank you very much. I have steel with 2 blades. I will disassemble it again. That means I have to loosen the radiator again and fold it forward.

gridleak · 10-10-2021, 05:10 PM

some fans and or shafts were made with the wrong taper. it will keep getting loose even if you keep tightening it until it gets your radiator.

09-26-2021, 11:21 AM	#1
Oberfranke Junior Member Join Date: May 2020 Location: Germany, in Coburg (Bavaria) Posts: 24	Rattling after installation of new water pump I have installed a new water pump: leakless/ball bearing water pump A-8502 Sny... Since then something rattles. I have uploaded a short video: https://youtu.be/WypPcsnN6Ww Maybe someone has an idea? Greetings from Bavaria

09-26-2021, 11:31 AM	#2
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,958	Re: Rattling after installation of new water pump Remove the fan belt and see if it stops the noise.

09-26-2021, 12:04 PM	#3
Brentwood Bob Senior Member Join Date: May 2010 Location: brentwood, ca Posts: 4,232	Re: Rattling after installation of new water pump The fan pulley taper may be worn. That wobble looks bad to me. Last edited by Brentwood Bob; 09-26-2021 at 12:38 PM.

09-26-2021, 12:08 PM	#4
katy Senior Member Join Date: Jun 2015 Location: Red Deer, Alberta Posts: 5,042	Re: Rattling after installation of new water pump Did you check the clearance between the back end of pump shaft and the cylinder head? __________________ If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn!

09-26-2021, 12:51 PM	#5
jw hash Senior Member Join Date: May 2010 Location: Auburn Washington Posts: 2,552	Re: Rattling after installation of new water pump the fan looks like it is not tight to the shaft, take a hold of the fan and check for it being loose.

09-26-2021, 03:33 PM	#8
old ugly Senior Member Join Date: Aug 2021 Location: alberta canada Posts: 585	Re: Rattling after installation of new water pump did you get the fan hub onto the keyway properly? just my first thought. ou

09-26-2021, 04:46 PM	#9
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,373	Re: Rattling after installation of new water pump Mine developed an intermittent vibration and soft clattering sound that was most noticeable while the engine was idling. I thought the fan seemed to be tight on the shaft but old guy showed me something. He lowered a large shop rag to where it made contact with the end of the rotating fan blades. When he did this the vibration and noise stopped. Turns out that the fan was actually loose but only so loose as to move when the engine was running.

09-26-2021, 09:24 PM	#10
gdmn852 Senior Member Join Date: Feb 2019 Location: Erie Pa Posts: 691	Re: Rattling after installation of new water pump Hello on mine I had to grind down some of the cast end diameter as the repo aluminum blade was rubbing against it .

09-26-2021, 09:30 PM	#11
gdmn852 Senior Member Join Date: Feb 2019 Location: Erie Pa Posts: 691	Re: Rattling after installation of new water pump On the water pump body that is.

10-09-2021, 12:27 PM	#12
Oberfranke Junior Member Join Date: May 2020 Location: Germany, in Coburg (Bavaria) Posts: 24	Re: Rattling after installation of new water pump The fan wheel was actually loose, I could even move the nut slightly. Now I pulled the cotter pin, and was able to retighten the nut about 3/4 turn. Then set a new cotter pin. The shaft did not turn when I tightened the nut. The rattling was gone. After 45 minutes of driving, there was play on the fan wheel again and the rattle was back. The nut is still splined.

10-09-2021, 12:48 PM	#13
Keith True Senior Member Join Date: May 2010 Location: Epping N.H. Posts: 2,979	Re: Rattling after installation of new water pump Now that it's been run loose I think you are going to find the key is either destroyed,or out of position.It can also tear up the inside of the tapered part of the pully. It is pretty easy to push the key out of position when sliding the fan onto the shaft.You will think it is tight,but will start to rattle shortly.Is the fan original steel? Modern 2 or 4 blade steel? Modern aluminum? That blade is going to have to come off to get a look at it to be safe and sure.

10-09-2021, 02:21 PM	#14
Oberfranke Junior Member Join Date: May 2020 Location: Germany, in Coburg (Bavaria) Posts: 24	Re: Rattling after installation of new water pump Thank you very much. I have steel with 2 blades. I will disassemble it again. That means I have to loosen the radiator again and fold it forward.

10-10-2021, 05:10 PM	#15
gridleak Senior Member Join Date: Oct 2010 Location: bozeman mt Posts: 170	Re: Rattling after installation of new water pump some fans and or shafts were made with the wrong taper. it will keep getting loose even if you keep tightening it until it gets your radiator.

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