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 Post subject: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Fri Jun 28, 2019 2:27 pm 
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Victor II
Joined: Thu Feb 26, 2015 9:27 pm
Posts: 399
Location: Peoria, IL
I am getting ready to replace the fiber gear on my late Columbia BN disc phonograph. I'm trying to figure out how to remove the spindle to do this job. It has the brass cones above and below the motor bed plate. Are these pressure fit or is there another trick to remove them? Any help would be appreciated. Thank you in advance.


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Mon Jul 01, 2019 6:12 pm 
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Victor IV
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Joined: Fri Apr 06, 2012 9:38 pm
Posts: 1305
Location: Plover, WI
If you remove the setscrew on the gear body, the shaft should come out.


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Mon Jul 01, 2019 6:15 pm 
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Victor II
Joined: Thu Feb 26, 2015 9:27 pm
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Location: Peoria, IL
I have loosened that set screw & the lower gear portion comes off but the cone shaped brass piece above it does not seem to move. I don't know whether it is pressure fit or there is a hidden screw I am not seeing.


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Mon Jul 01, 2019 9:54 pm 
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Victor V
Joined: Mon Aug 24, 2009 3:08 pm
Posts: 2224
Location: Harrison Township, MI
Somebody has completely botched that up at some time. First, I'm nearly certain that the gear assembly is in there upside down. Second, the brass cone between the gear and the motor frame should NOT be there at all.

OR, thinking about it further, that gear assembly may not be so much upside down, as it may be just the wrong gear assembly for that motor. There should be almost no space between the bevel gear and the fiber governor drive gear. Yours has those 2 gears sitting relatively far apart.


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Mon Jul 01, 2019 10:18 pm 
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Victor II
Joined: Thu Feb 26, 2015 9:27 pm
Posts: 399
Location: Peoria, IL
It meshed fine with the governor (which I removed). It was "clicking" due to a bad fiber gear tooth. It is all original, but definitely a late model. Just need to know whether I can use pressure to move the brass cone or if there is a fastener holding it.


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Tue Jul 02, 2019 10:59 am 
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Victor III
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Joined: Wed Jan 07, 2009 5:23 pm
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Location: Michigan
There's only one way for the spindle to be removed, it has to be pulled out from the top. So do nothing with the brass cone topside.
The brass gear and spacer must come off from the bottom of the spindle as it's pulled upwards.
Although the brass gear and spacer may be stuck on the spindle they are not a pressed fit. They should slide off the bottom of the spindle.
Even with the set screw loose you may have to use some solvent or heat to break the bond of dried up oil.

Larry Crandell


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Tue Jul 02, 2019 8:41 pm 
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Victor V
Joined: Mon Aug 24, 2009 3:08 pm
Posts: 2224
Location: Harrison Township, MI
colmike1 wrote:
It meshed fine with the governor (which I removed). It was "clicking" due to a bad fiber gear tooth. It is all original, but definitely a late model. Just need to know whether I can use pressure to move the brass cone or if there is a fastener holding it.


The fiber gear probably would mesh o.k., except for the nicks, but does the bevel gear mesh as well??? Maybe I've got an earlier style motor in mind.


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 Post subject: Re: Need help: Spindle removal Columbia BN Pictures Added
PostPosted: Tue Jul 02, 2019 10:05 pm 
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Victor II
Joined: Thu Feb 26, 2015 9:27 pm
Posts: 399
Location: Peoria, IL
Phonolair wrote:
There's only one way for the spindle to be removed, it has to be pulled out from the top. So do nothing with the brass cone topside.
The brass gear and spacer must come off from the bottom of the spindle as it's pulled upwards.
Although the brass gear and spacer may be stuck on the spindle they are not a pressed fit. They should slide off the bottom of the spindle.
Even with the set screw loose you may have to use some solvent or heat to break the bond of dried up oil.
I will give that a try. Thanks

Larry Crandell


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