| Tim Donahoe |
Tue Jul 15, 2025 9:07 pm |
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The way it was explained to me, you should be able to get a popsicle-stick width between the curled end of the bracket and the flap. That's about 3/8 inch, if I remember correctly.
If this distance is altered--usually, by rough handling when pulling the fan housing, for instance--the thermostat rod won't travel up and down unhindered, as designed. The results will be that the thermostat rod will travel at an unnatural angle, and get hung up on the hole in the head that it passes through.
Been there, and had to replace that flap to finally get one where the "C" bracket wasn't bunged out of shape. My thermostat rod kept hanging up on the head/hole interior and not opening and closing properly until I got the replacement.
Tim |
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| Bruce |
Wed Jul 16, 2025 12:34 am |
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Ry-dog wrote:
Can anyone confirm my understanding as shown in the photo here
Yours looks about right. |
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| Ry-dog |
Wed Jul 16, 2025 5:26 am |
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| Thanks for the replies. My 'C' opening is a bit too close to the flap, so I'll have to pull it back out a bit to achieve that 3/8". I had a thermostat expand too much and it buggered the thermostat rod, pushrod tube, and likely the 'C' clip. Will heat it up and see what I can do. In the meantime, I am waiting for Clark to get back to me about a new flap. |
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| Eric&Barb |
Tue Aug 19, 2025 2:28 pm |
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Ry-dog wrote:
Wanted to be sure I am understanding the reference for the 3/8" between the flap arm (thermostat rod?) and flap itself. Wanted to be sure my flap is in spec prior to installing. Can anyone confirm my understanding as shown in the photo here or have any comments/observations on my flap 'C' clip condition? Thanks!
So you could slide a 3/8" wide Popsicle stick between the base of that arm and the head of the arm that the rod pivots inside of.
Not from base to center of the thermostat rod. |
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