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How to make Sears 2 Speed Green Blade Desk Fan Oscillate  Rate Topic 
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 Posted: Tue Jun 11th, 2019 01:54 pm
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Brandi Bowman
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Sears Roebuck Green Blade Oscillating Desk Fan Model 303.80020
This particular model is all metal with transparent green acrylic blades. It's a 2 speed with the control dial on the top of the motor and the oscillating arm underneath. 

I bought it at an estate sale a few weeks ago and it worked after cleaning and oiling.

Decided to have it blow in a stationary position so I loosened the plastic nut on oscillating arm. Later wanted to switch back to oscillate and I can't get it to reengage. It's a very strange arrangement. If I tighten the nut too much the parts don't move. If I partially tighten it things start to rotate but then stop.

My question is, how is this arrangement suppose to look when in the oscillate position? 











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 Posted: Tue Jun 11th, 2019 08:28 pm
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Tom Zapf
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when you loosened it up to be stationary a small washer might have disintegrated. mike heffernan has my blue version and i think it had the same problem because i put the washer back on the wrong side after putting the fan back together. It was at the oscillator knob arm....

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 Posted: Tue Jun 11th, 2019 08:47 pm
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Brandi Bowman
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Interesting....disintegrated washer...so maybe it was rubber or plastic? I'll experiment with different washers when I get home today. Thank you. I'll let you know how it goes.

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 Posted: Tue Jun 11th, 2019 10:09 pm
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David Northam
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In addition to the suggestion about the washer (which is a great suggestion) also make sure the pin with the plastic nut (that you tighten or loosen) is in the right place within the elongated opening. It is in the wrong position in several of your photos. It should be in the outer-most position within the area where it can slide back and forth.

If the fan "head" is level (air flowing straight forward) you can have the fan in a stationary position without too much worry. However, if the head it pointed upward, the oscillator mechanism is made so that you can tighten it in the stationary position so the head doesn't flop to one side.

What I'm trying to say is the stationary versus oscillating operation is not just a matter of "tighten and loosen," but also the position in the elongated slot when you tighten it.

If someone else reads this and can explain it more clearly, please do! LOL

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 Posted: Wed Jun 12th, 2019 01:06 pm
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Tom Zapf
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i think the little washer was some sort of nylon. when i lubed mine and put it back together i had that in the wrong place and i had no movement 

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 Posted: Wed Jun 12th, 2019 02:02 pm
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Brandi Bowman
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Thank you, David. That was way more articulate than how I'd explain it. Time to go out in the hot garage to work on it :)

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 Posted: Wed Jun 12th, 2019 04:21 pm
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Brandi Bowman
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SUCCESS!!! That little nylon washer did the trick! I'm so happy! And a lot less sweaty 😂Thanks for all the help guys.





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 Posted: Sun Jun 16th, 2019 05:02 pm
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Greg Miller
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If you look carefully at the head of that pinch bolt, you'll see that it has two "flats" on the underside of the head. Those flats are supposed to key into the slot in the crank. When the bolt is slid over into the stationary position, the flats are allowed to turn in the larger round opening at that end of the slotted crank. When oscillating, the bolt will stay stationary and the arm will be free to rotate on one of the shoulders of the nut, rather than pivoting on the bolt. Letting that bolt drop into the slot will leave more clearance for the arm to rotate freely. Otherwise, the motion of the crank's rotation is constantly trying to loosen the nut.

Aside from that little detail, you have the stack together in the right order: the nut tightens the bolt in the slot and the hole in the arm remains free to rotate around the shouldered nut.

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 Posted: Tue Jun 18th, 2019 01:04 pm
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Brandi Bowman
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Thank you for the concise explanation of all the moving parts. These things don't exactly come with manuals when they're second-hand.

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