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Kidney repair  Rate Topic 
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 Posted: Thu Nov 8th, 2018 10:40 pm
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Edward Kowalke
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Some progress I have made on the GE Kidney fan I am cleaning up, It is not perfect but far from needing restoration other than repair of the gearbox.

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 Posted: Fri Nov 9th, 2018 01:46 am
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Lucas Beshara
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So what did you use for the repair?  Let us know if it holds up to the drill bit

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 Posted: Fri Nov 9th, 2018 09:57 pm
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Lane Shirey
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Tim Marks at White Glove Fans makes an excellent steel reinforcement kit for the exact problem you had. It’s quite likely that your repair to pot metal may not be so durable. Even adding his kit to your repaired joint will help it’s durability. 

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 Posted: Tue Nov 13th, 2018 01:26 pm
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Edward Kowalke
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I sent it to someone who welds/fuses potmetal. The problem that arose was the amount of oil in the casting caused an issue and it could not be welded/fused. Since it was already there I had him repair it by soldering. He used a silver alloy solder to make the repair. It is drilled and still together. 

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 Posted: Tue Nov 13th, 2018 01:30 pm
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Edward Kowalke
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Lane Shirey wrote: Tim Marks at White Glove Fans makes an excellent steel reinforcement kit for the exact problem you had. It’s quite likely that your repair to pot metal may not be so durable. Even adding his kit to your repaired joint will help it’s durability. 
I already have a reinforcement made and epoxied to the casting. Looked at white glove and it is the same as they are selling. I was thinking of something a little larger for the inside than just washers though.
Ed

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 Posted: Wed Nov 14th, 2018 02:50 pm
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Edward Kowalke
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Lucas Beshara wrote:
So what did you use for the repair?  Let us know if it holds up to the drill bit
It is drilled without issue, then a thin steel plate epoxied on inside and outside of the ring for reinforcement.

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 Posted: Thu Nov 15th, 2018 12:15 am
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Lucas Beshara
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Very nice:up:

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 Posted: Fri Nov 16th, 2018 04:11 pm
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Edward Kowalke
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Got it assembled.

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 Posted: Sat Nov 17th, 2018 01:38 am
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Lucas Beshara
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I would check your lash before running. It looks like that brass worm gear will sheer some/all teeth over time. It looks like a little file work will ensure your repair is completed successfully.  Here is something on lash and where I think the gearbox needs to go. Use a spiral file and oval the drilled holes to bring into correct lash:up:

Well some error on picture file size came up on the gear backlash diagram I came up but here you go







Last edited on Sat Nov 17th, 2018 01:51 am by Lucas Beshara

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 Posted: Sat Nov 17th, 2018 11:35 am
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Lane Shirey
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Or,  there’s a lot of wear/play in the pot metal hole in the bottom of the gearbox, allowing the driven gear to tilt away from the worm gear???

Maybe with the lid in place it’ll pull the gear closer to the worm? 

But in either case, nice catch Lucas!


Last edited on Sat Nov 17th, 2018 11:36 am by Lane Shirey

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 Posted: Sat Nov 17th, 2018 02:39 pm
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Edward Kowalke
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Lucas Beshara wrote: I would check your lash before running. It looks like that brass worm gear will sheer some/all teeth over time. It looks like a little file work will ensure your repair is completed successfully.  Here is something on lash and where I think the gearbox needs to go. Use a spiral file and oval the drilled holes to bring into correct lash:up:

Well some error on picture file size came up on the gear backlash diagram I came up but here you go





Thanks for the concern. I did notice this issue but have not looked into it. The vertical shaft does have quite a bit of play side to side in relation to the cast iron part that holds the detent ball/spring. The bottom housing hole is very tight.


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