How to pull a condenser fan blade
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- Опубликовано: 8 сен 2024
- I show how the condenser fan blade can be removed from a rusted shaft. The hub puller used will not damage the blades of the fan. This is probably the best type of tool out there for this operation.
This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome.
If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.
Anyone else watching this while hot, pissed off, and bleeding profusely?
me
Yep. Not quite profusely
Checks out
LOL
checking in😂
Hey GFM, I've found what works really well is to drill a hole in the center of the shaft. It relieves the pressure and the blade will come off then. Ive also heated a few shafts in my time.
from Illy Hvac llc
i have a suggestion for you. after you clean the shaft. take a 1/2 black iron pipe, place the pipe over the shaft. hit the pipe hard a few time to break the hub loose. I do this then reclean the motor shaft relube the put the hub puller on and crank away. much easter to remove the hub.
Ive learned a lot from you thanks buddy.
Good thoughts.
GFM
Yep, get rid of that rust line where the sand paper can't get to without that tap.
+grayfurnaceman what's the name of that tool?
After years of struggling i finally got myself a fan blade puller, had to import it as not available here!
I got a Supco one, which looks the same as Yellow Jacket which is made of steel. it hasn't failed me yet. I have a small wire brush i put in the battery drill to help get the rust off the shaft, and usually put some grey primer on the new shaft to make it easier the next time round with blade removal. Great vid!
Yes. Ahhh for a little grease on that shaft when the blade was installed.
The hole sounds good. My experience has been that if I heat the blower hub, I will have to replace the fan blade due to out of balance. But whatever gets it done.
GFM
A little tip ---since the motor is junk any how , instead of sanding the shaft, you could take your 4" grinder out of the truck and Lop off the end of the rusty shaft. Less shaft to pull. If no grinder on the truck , then yea , sand her down to shiny metal. Makes life a whole lot easier ! Rust I have found actually increases the size of the shaft. Get rid of all rust. It's worth the time.
Good tip. Thanks.
GFM
You have saved my life!! Awesome tip will try on the motor change out i have tomorrow
20 minutes ago, I cut the shaft, and knocked it through the opposite way, took 10 minutes, waiting on my new motor to arrive!
Been there, done that.
GFM
Good job bro
You can spray some wd-40 on the shaft before you put the puller on it and if you take your wrench and tighten it to the shaft of the motor and spin the blade it loosens things up alot better
I agree that could certainly help.
GFM
Yep, good tip.
Don't hold back on the fan blade! Hold the puller with another wrench. And oil the threads on the puller main screw.
What causes air to exit a condenser fan grille horizontally instead of vertically? The only reasons I've heard: fan ass'y running backwards, wrong position of fan ass'y relative to the shroud (fan tips supposed to be about an inch up into shroud) and plugged cond coil. Have one now doing horizontal air flow, but none of those conditions. Cooling well. 18 or 19 degree temp spread.
It may have bee designed to work that way.
GFM
Check your capacitor if it’s running backwards.
Another great video..
T&N commented that you can drill a hole in the shaft. I can't picture it. A hole through the radius or the long way? Also does anyone know what you use to lube the threads of the puller to keep the aluminum from binding up with the steel?
acoustic4037 You will be drilling a hole longitudinally thru the shaft. Any penetrating lube will do.
GFM
Very nice video I like it. Question: My outdoor fan motor is drawing 1.03 amps it is stamped FLA 1.3 amps it seems to be working fine. Do you think I should change it out? thank you for your helpful videos.
gerry mcadams If the amp draw is at or below rated amps and the voltage is correct, it is ok unless the bearings are stiff. Hope this helps.
GFM
Thank you so much for responding, It did help me out. I really enjoy your videos, You just got another subscriber
Hey Furnaceman
I was just wondering what those things do that you have taped on the stem? do you use them for blower wheels?
I may make me one of those pullers out of steel on my lathe :)
You can do it but make it out of tool steel and harden it.
GFM
Absolutely, tool steel is cheap and I have a forge so heat treating is no problem. What is a good universal size to slip over the hub?....you work with these more than me. Thanks!
I just replaced my condenser fan motor with a brand new Century universal motor with exactly the same specs. When everything was buttoned up and looking better than previously (meaning extra care in zip tying wire looms, etc), the fan squeaked! I treated this motor like a baby, never dropped it.... Is there any reason other than a bad motor bearing out of the box that this would happen? The fan makes noise only in the CW direction which seems odd. It is a reversable motor set to the CW rotation..... You seem to be a strong authority and I was wondering if you have ever had a bad condenser motor out of the box....
Most of the time when I had something like that, it was because the box was dropped during shipment.
GFM
I solved the issue and feel foolish... the dust cap rubber center piece was rubbing on the motor housing making the terrible screeching. A little bearing grease on the lip and the cap is all it took. I couldn't believe that it was loud enough to be heard at the street and next door!
What happens when a blade drops from the shaft by itself?
The blade can be remounted if the hub is not damaged.
GFM
My condenser fan is stuck to a rusted motor shaft. I don't have a gear puller but I do have two C-clamps. I used a wrench handle as a crossbar as I tightened the two clamps. The fan won't budge and I am afraid the monkey wrench handle will break. I need ideas.
Gino Punsalan Cut the shaft with a hack saw close to the hub. Then you can place the hub on a vise so you don't damage the fan. Hope this helps.
GFM
The motor is good. The fan is damaged that is why I want to remove it.
Gino Punsalan Then I would cut across the hub with the hacksaw.
GFM
That worked. I cut the hub in half with an angle grinder. New fan installed. Thanks again.
Hub type puller is the only way to go do not buy the cheap one get the one show here
A rusty shaft
I did this but one of the screws hit the hole where the set screw goes. What can I do to make the screw go in now?
I would try a tap.
GFM
You don't need that puller at all I just use a wire wheel on my drill go around the shaft a few times until the rust is gone put some WD-40 hold the fan with my hand a few taps with a hammer falls right out. I got the idea from this video here it works every time. ruclips.net/video/eUXvgJDRjrI/видео.html
I would like to produce that kind of condenser fan blade myself.
Can you tell me what to do?
Do I need stamping mould?
Can I produce with deep drawing machine?
Can you tell me who can make mould?
Material of fan blade : aluminum
Thanks,
Ye Thant I'm afraid that one is above my pay grade.
GFM
Did this video convince anyone else to just pay someone to do it? I'm a DIY guy and not looking forward to this...
I find this tool to be garbage