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Mr heater fan starting to make noise when starting

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Needed lubrication for fan motor shaft

Posted on Dec 11, 2014

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Try taking apart fan housing & look to see if fan blade is scraping the housing. next look to see if fan blade is secure to fan motor shaft.next look to see if fan motor bearings are worn egg shaped and try oiling fan motor bearings with sae 30.
somewheres amoung all this inspecting of the fan motor, you will find the cause of the problem and learn what new parts you may need to buy to fix it.

Posted on Oct 07, 2013

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Im on my 2nd big buddy and both of them the fan has gone out, the first on went in a week, and this one last a couple of months.


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1. oil the bearings,sae 30 or wd40 for places you cant get into.
dont take fan motor apart unelse you realy have to.

dont let your fan motor bearings get worn egg shaped from lack of oil.
2. make sure fan blades not hitting or scraping fan housing and fan blades are securely fastened to fan motor shaft.


3.mr heater fan motor is 12 volts DC , so it may have a segmated comutator and brushes.


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Your specific problem: first fan 2 weeks,second fan 2 months.


how much you use them, are you wearing the brushes down?
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