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Diehl H 16912  Rate Topic 
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 Posted: Thu May 18th, 2017 07:52 pm
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Joseph Grenon
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Hello; I am new here. My name is Joe, or Joseph.  I do metal restorations in a Maryland suburb of Washington DC. I have a couple of old fans I may ask about later, but today I need some help and or advice about a Diehl H 16912.

This fan belongs to a friend of mine. He gave it to me to make it look nice. We powder coated the case pieces in a crinkle black, and the fan blade is wine red.   It is looking very nice all back together, BUT, it seems that in the process, the fan has gotten out of balance.  That is the first issue.

The second issue is related. The motor is slow to start up, and once up to speed starts to rattle and groan. 

Most of that is the off balance blade.

We did not do much about the guts. I think we may not have gotten all the mechanisms back just right. I notice the motor turns faster and smoother when I  play around with the oscillating mechanism.

I am now satisfied that I should probably clean and regrease the internal gear assemblies.  I am wondering if I should do something about the brushes, which I have not yet located.

I understand there is probably a great thread or two about this, but I claim noob status and ask for your help.

If anyone could direct me to the right discussion page or any other information, I would be most appreciative.

I come across nice old fans from time to time, and am occasionally asked to do some restoration work on the; so discovering this group is a very good thing.

I look forward to replies and help. 

I have been in the restoration business for 36 years now, the last 20 specializing in metal objects.

I am a quick study and have figured out many problems over the years, but motors are not a strong suit, and I am pretty new to balancing blades.

How we determine what and how much to restore is a conversation with the owner and an evaluation of the expected outcome.

Anyway I am  happy to share whatever experience and advice y'all might find useful

JG

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 Posted: Thu May 18th, 2017 08:19 pm
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Ryan Blazei
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If you are unable to find the brushes right away, it likely doesn't have any, but without pictures it is hard to say. Also, If the powder coat is not completely equal on each blade, it will shake like you are talking about, or you may have deformed the blade while heating it up for the powder coat. You can check this by using your finger as a reference point to the blade and manually spin it, if one is closer than another, it is deformed. Also the slow start up and groan is almost always bearing which may just need some electric motor oil, specifically without detergents such as 3 in 1 in the blue can.



 You should always clean up the old grease in a gear box as it has deteriated and likely doesn't provide any lubrication, or flow, so use most any quality grease to replace. 

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 Posted: Thu May 18th, 2017 10:50 pm
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Lane Shirey
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Hi Joe, Ryan's got it right on point. Also as far as restoration tips, I'll point you to the Search Function in the forum. It's a treasure trove of information. And many fans have similar structure and design and therefore the instructions don't need to pertain to your exact fan. Search "remove blade" , "clean oscillator" , etc.  Most Emersons are a bit different so search accordingly. 

You may find that members  might not reply if you say "how do I restore this" and that's where the search comes in handy. It's likely your basic question has already been answered many times and we get bored easily.  .

I hope that helps and all the best in your new hobby!

Cheers! 

Lane

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 Posted: Fri May 19th, 2017 07:01 pm
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Joseph Grenon
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all good things to know. I will make and load some pictures soon.  I'm sure the blade has deflected, it is pretty stiff, so not easy to bend.  Powder coating bakes at about 450, which should not be enough to deflect the blade on its own when it is steel.  There are two little notches on one of the blades, and not all four are just the same shape.

I will do about pictures and look around the search feature.
Thank you.
J

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 Posted: Fri May 19th, 2017 07:04 pm
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Joseph Grenon
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It does help, and I thank you. I may take the coating off the blades, and try to balance them up better before recoating. Blades don't need powder so much, that was more for a uniform crinkle finish which is hard to do with a spray on a hanging piece.

Thanks Looking forward to this group.
JG

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