Need Opinion On How To Disassemble Motor
Need Opinion On How To Disassemble Motor
(OP)
Hello all! I'm trying to pull this motor so that I can get at it internally to wire it for 220V. Unfortunately I can't figure out how to get the fan blade off. There seems to be some sort of pin wedged in between the motor shaft and the blade. Does that need to be removed to get it off, if so how?
I was hoping someone here has worked with something similar and could point me in the right direction.
TIA!
(photos)



I was hoping someone here has worked with something similar and could point me in the right direction.
TIA!
(photos)








RE: Need Opinion On How To Disassemble Motor
That pin you refer to is actually a keyway and the fan and key for that matter might be an interference fit, you could try heating just the hub of the fan blades so that it expands and then it should come off.
desertfox
RE: Need Opinion On How To Disassemble Motor
That "sort of pin wedged in between the motor shaft and the blade" looks very much like an ordinary key.
It is usually quite easy to just pull the fan off the shaft. The locking screw seems to be removed already. If it isn't, then just do it.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Need Opinion On How To Disassemble Motor
... or would, if you have not mangled the end of it too badly.
Is that a chisel mark on the end of it?
What you need now is a pulley puller, that can grip the fan blade hub, and push against the end of the shaft. Some kinds of pullers can engage the groove in the hub adjacent the end for that purpose.
Caution; put a hardened screw in the tapped hole in the end of the shaft before engaging the puller. A typical puller has a pointed screw that will enlarge the end of the shaft while applying the couple tons of force it will take to force the hub off the shaft. The fan will eventually come off anyway, but the enlarged shaft makes it a lot more work, and makes it more difficult to put the fan back on later. Electric motor shafts are usually made of pretty soft steel, and easy to distort.
Mike Halloran
Pembroke Pines, FL, USA
RE: Need Opinion On How To Disassemble Motor
Mike Halloran
Pembroke Pines, FL, USA
RE: Need Opinion On How To Disassemble Motor
If you must remove the fan, an autoparts store may have a puller that will handle that job. Power steering pumps on cars usually have a similar pulley that can only be pulled with the proper puller (unless you don't mind destroying the pulley)
RE: Need Opinion On How To Disassemble Motor
"It's very likely you can take off the cover on the opposite end of the motor and access the wiring. I don't know of any motor that is designed to be disassembled to reconnect for different voltages. The connections you need to make should be in an easily accessable connection box somewhere on the motor."
This motor is wired for 110V but does not have a external box that will let you switch it over. I've seen this exact motor made for this unit under other name brands and on all of those models it comes with an external box with terminals to switch between 110v/220V. In the manual it actually shows a diagram how it's wired for 110v with an external terminal box but on the unit itself the box is no longer there. I'm positive the motor can be set up for either or but the company opted out of putting the extra box and terminals most likely to cut down on costs. Also they sell the same model with a 220V only motor that looks identical to others that allow you to switch between 110/220V.
RE: Need Opinion On How To Disassemble Motor
RE: Need Opinion On How To Disassemble Motor
You might be able to get some purchase between the hub of the fan and the motor endbell, but don't use a lot of force otherwise you'll damage the bearing.
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If we learn from our mistakes I'm getting a great education!
RE: Need Opinion On How To Disassemble Motor
Scotty is right; a regular 'pulley puller', meant to grab a sturdy iron spoke, will just trash the fan.
Mike Halloran
Pembroke Pines, FL, USA
RE: Need Opinion On How To Disassemble Motor
Bill
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"Why not the best?"
Jimmy Carter
RE: Need Opinion On How To Disassemble Motor
Good luck.
RE: Need Opinion On How To Disassemble Motor
If you look at the puller in the attachment you can see the collars/hub adapters, these can easily be made. The groove in your fan hub will provide an excellent spot for the bolts to grip. A little heat will help when you go to pull it.
h
Thanks
RE: Need Opinion On How To Disassemble Motor
I have a puller exactly like the one in this video:
http://www.youtube.com/watch?v=r9i1FT-w-JY
It does not need the groove to work.
It does work very well.
The video does not show the witness marks that the setscrews leave on the hub.
The groove is clearly intended for a puller that fully supports it,
like this one:
http://ww
Sorry, I could not find a clearer illustration. The tool comprises two half shells with inner radial fins that engage hub grooves, a sleeve to keep the shells from expanding, and a disc and screw that push on the shaft.
Mike Halloran
Pembroke Pines, FL, USA
RE: Need Opinion On How To Disassemble Motor
RE: Need Opinion On How To Disassemble Motor
That and a hammer might be enough; it's good stuff.
Mike Halloran
Pembroke Pines, FL, USA
RE: Need Opinion On How To Disassemble Motor
I'm not a big fan of 'miracle' lubricants and such, but Mike H. is right, AeroKroil is an amazing product. It does an excellent job of freeing up metal to metal parts. You will be amazed at how well it works.
Thanks
RE: Need Opinion On How To Disassemble Motor