80MGF4/5-140A-12 Blower Wheel Retaining Bolt

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Old 04-27-13, 03:57 PM
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Question 80MGF4/5-140A-12 Blower Wheel Retaining Bolt

The blower on my 80MGF4/5-140A-12 started to make grinding noises. I pulled the blower assy and found out that the retaining bolt on the blower wheel is missing (sometimes I stand mouth agape at the wizardry of the previous owner ).

Can somebody specify what pitch and what size bolt do I need? Thanks.
 
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Old 04-27-13, 04:38 PM
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Do you mean the allen head set screw that goes into the hub on the blower wheel ?
 
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Old 04-27-13, 04:56 PM
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Most, but not all, blower wheel set screws are 1/4-20.
 
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Old 04-27-13, 06:27 PM
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PJMax - Yes the retaining bolt that tightens up against the motor shaft.

Grady - Thanks will get it.
 
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Old 04-27-13, 07:41 PM
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Well the 1/4-20 is too small. Tomorrow I will take the wheel with me.
 
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Old 04-29-13, 06:56 AM
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AC question

Hi Grady - I see you've helped a lot of people with AC issues and I appreciate your expertise.

I know this is not the place but could you help me with replacing my Sandy flooded unit outside?
Thanks in advance
 
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Old 04-29-13, 09:39 AM
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The bolt I needed for the blower hub turned out to be 5/16-18 x 3/4 inch long.
 
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Old 04-29-13, 04:26 PM
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Sorry 'bout the guess on the set screw.
Regarding the flooded outdoor unit; likely all you would have to replace is the contactor, capacitor, & fan motor. The compressor should be ok unless the line set got ripped loose.
 
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