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Signal Box Fan issues  Rate Topic 
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 Posted: Tue Feb 26th, 2019 05:26 am
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Levi Mevis
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Joined: Tue Feb 24th, 2015
Location: Elkhart, Indiana USA
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Hello everyone three weeks ago I finished overhauling my 1955 Signal 20" Box Fan model RW-20 that I got from a fellow member here early last month and I had oiled up the fan well but then about two weeks later (last week) the fan wouldn't start up on its own on low and when I tried to run it on high the fan started up but once it got up to speed it squealed like no one's business, so I took and oiled the motor up again and it ran just fine again but then yesterday afternoon I noticed a huge puddle of oil on the bottom of the fan and oil splatters all over the inside of the fan housing, so I took an old sock and wiped up the oil and have been running the motor off and on, on low to check and see if the puddle reappears again.


My question is, what would cause a box fan motor to just randomly leak oil out of it when the fan is running?
When I had the motor apart in this fan initially when I was overhauling the motor by adding things like fiber washers and what not I looked at the bearings and they seemed to still have oil wicks in the bearings so I'm not sure what's causing this fan to lose oil like it is.

Any help with this issue would be most helpful.

Thanks,

Levi 

Last edited on Tue Feb 26th, 2019 05:29 am by Levi Mevis

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 Posted: Tue Feb 26th, 2019 09:35 am
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David Allen
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Levi Mevis wrote: Hello everyone three weeks ago I finished overhauling my 1955 Signal 20" Box Fan model RW-20 that I got from a fellow member here early last month and I had oiled up the fan well but then about two weeks later (last week) the fan wouldn't start up on its own on low and when I tried to run it on high the fan started up but once it got up to speed it squealed like no one's business, so I took and oiled the motor up again and it ran just fine again but then yesterday afternoon I noticed a huge puddle of oil on the bottom of the fan and oil splatters all over the inside of the fan housing, so I took an old sock and wiped up the oil and have been running the motor off and on, on low to check and see if the puddle reappears again.






My question is, what would cause a box fan motor to just randomly leak oil out of it when the fan is running?

When I had the motor apart in this fan initially when I was overhauling the motor by adding things like fiber washers and what not I looked at the bearings and they seemed to still have oil wicks in the bearings so I'm not sure what's causing this fan to lose oil like it is.



Any help with this issue would be most helpful.



Thanks,



Levi 


Could the oil wicks be off-position so that they are not touching the shaft where they are packed into the slot in the bearing? I had this happen with a GE motor a while back. In the end, I had to reposition and repack the wick into the bearing slot and it has worked ever since.

If the original oil that you put in place was still soaked into the wick, but the wick wasn't touching the shaft - the baring would eventually seize, and the next oil would not have a place to stay since the felt is already saturated. So, it would leak out.

Just tossing out possibilities!

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 Posted: Tue Feb 26th, 2019 03:57 pm
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Levi Mevis
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I'll give it a shot, but not too keen on having to take this motor apart again because this will be the 8th time I've had the motor apart because when I was trying to get the right amount of fiber washers in place for proper rotor spacing it took me 7 tries to get it right.

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 Posted: Wed Feb 27th, 2019 05:20 am
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Luke Skelnik
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It's possible you over oiled it. The bearings might just be gummed up with old low quality oil. You've got to heat them up to "clean" them if they're porous.

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 Posted: Wed Feb 27th, 2019 06:11 am
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Levi Mevis
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OK, I'll check into that as well.

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