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AFCA Forums > Antique Fan Collectors Association > Pre-1950 (Antique) > Hunter Century C-16 Gear box disassembly

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Hunter Century C-16 Gear box disassembly  Rate Topic 
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 Posted: Fri Mar 15th, 2019 07:31 pm
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Pat Murphy
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Joined: Fri Nov 23rd, 2018
Location: Elk Creek, Virginia USA
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I've asked a few questions about the oscillation on/off knob on my Hunter Century C16 and now realize that the knob could not be part of what has me puzzled.

The gear on the vertical on/off shaft appears to spin independently from it's center shaft, with a bit of resistance. While turning the on/off knob, to on or off, there is no stopping point in either direction, nor are there noticeable snaps or clicks to indicate that oscillation has been turned from on to off and visa versa. Any idea what should happen to indicate on versus off?

It appears that I need to remove the vertical gear and shaft that the On/off knob attaches to, so I can find out how the on/off knob actuates oscillation.

It appears obvious that the the umbrella at the bottom of of the gear/shaft needs to come off first, and then slide the shaft and gear out the top. Does anyone see a problem with that?

Well, the problem is that the umbrella oscillating wheel will not budge. I assume that it should merely slide off the bottom. I don't see any set screws, etc. that hold it on. Prying with a screwdriver hasn't done the job so far either.

Any info about how this oscillator works would be most appreciated.





Thanks,
Pat

Last edited on Fri Mar 15th, 2019 07:33 pm by Pat Murphy

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 Posted: Mon Mar 18th, 2019 01:43 am
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Levi Mevis
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Location: Elkhart, Indiana USA
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It looks almost like your vertical oscillator gear for your oscillator knob is stripped because it looks like the gear teeth are missing in several spots which might explain why the oscillator activation knob just continuously spins, because that knob should tighten down like a nut on a bolt meaning that it screws down until it don't turn anymore which when its like that's when the fan starts oscillating, when you loosen it you turn it the direction the arrows indicate on the knob for off until the knob don't turn anymore and that deactivates the oscillator mechanism.
Hope this helps!

Levi

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 Posted: Mon Mar 18th, 2019 04:05 pm
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Pat Murphy
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Joined: Fri Nov 23rd, 2018
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Thank you Levi!

Glad I didn't try to pry the thing apart, that would have been bad news!
I've got what needs to be addressed disassembled and will post pics when I come up with a solution. Actually the solution may be nothing more than clean out the old hard grease :-) At lease I can get at it better now!

Thanks,
Pat

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 Posted: Tue Mar 19th, 2019 03:58 pm
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Pat Murphy
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Joined: Fri Nov 23rd, 2018
Location: Elk Creek, Virginia USA
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OK!

Here's what the top 1/2 of the vertical oscillating shaft looks like dismantled.
The parts stack from left to right onto that threaded vertical shaft in the gearbox. (The 2 star washers are not part of the C-16 oscillation gearbox.)

It appears that the way this oscillator works is that the On/Off selection knob in screwed down until tight, in the On arrow direction, thus pinching the (shown) gear tight with the indexed spring washer so that the gear turns in unison with the rest of the vertical oscillation shaft.

When the On/Off selection knob in turned to loosen, in the Off arrow direction, this gear will spin independently, causing the oscillator to not operate.

What I learned, With Levi's help, is that I had to grip both the Of/Off selector knob AND the exterior bottom oscillation part (the umbrella shaped thing) to tighten and loosen tension applied to the gear/indexed spring washer part of the vertical shaft. Now I will be able to tell definitively if the fan should be oscillating or not, as the vertical shaft will still spin (as if oscillating), as the fan is running, no matter if in the On of Off position.

It turned out, in my case, that the hardened grease in the gear box prevented the vertical gear from spinning along in union with the indexed spring washer, even with a fair amount of tension applied with the On/Off knob in the tight/On position.



One of those star washers may still come in handy if that indexed spring washer doesn't grasp the gear effectively enough to oscillate.

A little more clean up and reassembly with fresh grease.

Thanks!
Pat

Last edited on Tue Mar 19th, 2019 04:08 pm by Pat Murphy

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