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Old 06-25-2010, 03:12 PM   #29
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Originally Posted by loechli View Post
I have a 1972 27 ft international with the original Armstrong ac TR 21-12.

Recently the fan on roof that cools fins (I believe it is the condenser fan) hums and turns slowly but will not start. This seems to happen most often on low. I tried to lube fan but not sure where to lube. When the unit is off and I try to spin the fan it is somewhat stiff. Is there a replacement for this fan motor? Does it sound like a fan motor or something else?

Steve
Steve.

Remove the shroud.

You should then be able to lube the condenser motor.

Andy
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Old 06-25-2010, 04:33 PM   #30
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Just got done being motor very little change. Motor still spins hard and sometimes needs help starting.

Is there a current. Part number of motor from some place like grange

How about part number for capacitor as one ac repair guy said it might be a capacitor
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Old 06-25-2010, 06:02 PM   #31
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Sorry for all the typos guess I am not the best typest on my phone while in line at cedar point amusement park

I was trying to say I just finished lubing my motor

Still hoping someone can provide me with a replacement condenser fan motor I could find somewhere like granger. And a start capacitor.
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Old 06-25-2010, 07:20 PM   #32
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Sorry for all the typos guess I am not the best typest on my phone while in line at cedar point amusement park

I was trying to say I just finished lubing my motor

Still hoping someone can provide me with a replacement condenser fan motor I could find somewhere like granger. And a start capacitor.
If the motor spins hard, then that's the problem, not a condenser.

A bad condenser will not make the shaft turn hard.

Did you lube both ends of the shaft?

You can, if you wish, disassemble the motor, clean up the bearing sleeves, clean up the armature shaft, lube it again, and then reassemble. The shaft should now turn freely.

W. W. Grainger does have a replacement motor, but I do not have the part number.

Andy
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