The Ford Barn

SAXBY2 · 05-08-2025, 12:12 AM

Inherited a 2 blade alum fan / water pump. The fan won't come off the shaft with a puller, etc. Any safe method to remove the fan so as to not damage the fan ?

J Franklin · 05-08-2025, 12:32 AM

Penitrating oil and a bigger hammer. support the pully and wack the pump snout. Reverse the nut and use a hardwood block or leather hammer.

Bruce of MN · 05-08-2025, 03:30 AM

Depending on how you are supporting the pulley, have something soft under the pump so that it doesn't bounce off the concrete floor.

nkaminar · 05-08-2025, 05:00 AM

Try some heat from a propane torch.

Keith True · 05-08-2025, 07:48 AM

Screw a head nut onto a head stud a turn or so,then weld it there.Then screw that onto the water pump shaft,until it bottoms out.Make sure the nut doesn't bottom out on the fan.If it does put some kind of shim on the end of the pump shaft.Tighten it real tight,then hold the fan with the pump hanging, hit the stud with a hammer.A real hammer,and don't poot around with it.No tap,tap,tap crap,belt it.Watch your toes.I know you haven't put too much pressure on it with a puller,because you haven't broken the pulley.The amount of pressure they can take without breaking is tiny.

Gary WA · 05-08-2025, 07:56 AM

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as keith says!

Synchro909 · 05-08-2025, 06:26 PM

Aluminium expands more than steel as it warms. I have no issue with what Keith True says but I suggest doing what nkaminar also says. IMO, combining the two will help. Heat will loosen the grip between the fan and shaft while the head stud trick will allow you to give it a decent thump to break it free.
Bear in mid what Keith also says about the fan not being able to withstand much pressure if you support it at the back of the pulley. DON'T ask me how I know that but I was able to repair it.

Dodge · 05-10-2025, 01:04 AM

Heat and ATF + time and patience. The parts suppliers used to sell a piece that went on in place of the nut, like the rear wheel remover you screwed on and smacked with a hammer.
Don't know if anyone still carries it.

Randall · 05-10-2025, 06:17 AM

https://youtu.be/Wcd-zIA1YrE?si=1j42YFo-z3e21h-1 Like others have said ,

05-08-2025, 12:12 AM	#1
SAXBY2 Senior Member Join Date: Jun 2021 Posts: 142	Fan stuck on keyway / shaft Inherited a 2 blade alum fan / water pump. The fan won't come off the shaft with a puller, etc. Any safe method to remove the fan so as to not damage the fan ?

05-08-2025, 12:32 AM	#2
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 6,585	Re: Fan stuck on keyway / shaft Penitrating oil and a bigger hammer. support the pully and wack the pump snout. Reverse the nut and use a hardwood block or leather hammer. Last edited by J Franklin; 05-08-2025 at 11:01 AM.

05-08-2025, 03:30 AM	#3
Bruce of MN Senior Member Join Date: May 2010 Location: VA Posts: 2,047	Re: Fan stuck on keyway / shaft Depending on how you are supporting the pulley, have something soft under the pump so that it doesn't bounce off the concrete floor.

05-08-2025, 05:00 AM	#4
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 6,852	Re: Fan stuck on keyway / shaft Try some heat from a propane torch. __________________ 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.

05-08-2025, 07:48 AM	#5
Keith True Senior Member Join Date: May 2010 Location: Epping N.H. Posts: 3,692	Re: Fan stuck on keyway / shaft Screw a head nut onto a head stud a turn or so,then weld it there.Then screw that onto the water pump shaft,until it bottoms out.Make sure the nut doesn't bottom out on the fan.If it does put some kind of shim on the end of the pump shaft.Tighten it real tight,then hold the fan with the pump hanging, hit the stud with a hammer.A real hammer,and don't poot around with it.No tap,tap,tap crap,belt it.Watch your toes.I know you haven't put too much pressure on it with a puller,because you haven't broken the pulley.The amount of pressure they can take without breaking is tiny.

05-08-2025, 06:26 PM	#7
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 8,434	Re: Fan stuck on keyway / shaft Aluminium expands more than steel as it warms. I have no issue with what Keith True says but I suggest doing what nkaminar also says. IMO, combining the two will help. Heat will loosen the grip between the fan and shaft while the head stud trick will allow you to give it a decent thump to break it free. Bear in mid what Keith also says about the fan not being able to withstand much pressure if you support it at the back of the pulley. DON'T ask me how I know that but I was able to repair it. __________________ When all is said and done, more is said than done. That's why we judge people on what they do, not what they say. I sometimes wonder what happened to the people who asked me for directions. If I am not in trouble, I've done something wrong.

05-10-2025, 01:04 AM	#8
Dodge Senior Member Join Date: Nov 2011 Location: Sonoma, CA. Posts: 1,633	Re: Fan stuck on keyway / shaft Heat and ATF + time and patience. The parts suppliers used to sell a piece that went on in place of the nut, like the rear wheel remover you screwed on and smacked with a hammer. Don't know if anyone still carries it.

05-10-2025, 06:17 AM	#9
Randall Senior Member Join Date: Nov 2010 Location: Lambsburg Va Posts: 373	Re: Fan stuck on keyway / shaft https://youtu.be/Wcd-zIA1YrE?si=1j42YFo-z3e21h-1 Like others have said ,