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My unit is noise from outside at the fan side. Possible the bearing any help?

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What kind of noise exactly is it making? If it's a rattling noise, then likely it's your fan. Review this great, handy diagnostic article to lead you to a solution:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Home_Improvement_Zone_Cooling_Ventilation_Systems_Central_Air_Conditioning_Making_Rattling_Sound.htm
Good luck!
Brad

Posted on Jun 01, 2009

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Posted on Jan 02, 2017

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How to cure a noisy fan ?


Hiya! These fan units are a royal pain in the neck!

What you need to do, is get to the fan unit, remove the motor from the blade (they usually have a twist and lock bracket held on by a single screw)

The motors for the blowers are just simple shaded pole motors but these often dry out due to dust, and heat over time.

The best cure is to unscrew the motor and pull the shaft and rotor off of the front and back bearings... clean the shaft thoroughly of any debris and set aside.
Then, you want some light sewing machine oil (easily obtainable in most fabric stores) and you want to drip it around the outside of each bearing so the oil absorbs into the pads around the outside of each bearing. Add a smidge of oil to the inside of each bearing too, before reassembling the motor.

Make sure the motor screws are as tight as possible, and then with a screwdriver handle or similar instrument, give the motor shaft a few taps on one side, then a few on the other (this will align the bearings correctly.
Before reattaching the motor, on the other side of the fan unit you will see a little round metal or plastic cover held in place by a rubber gromit. This is the access to the spindle bearing. Pop this cover off and replace the grease under it, add a bit of machine oil too if you like (it cant hurt) and then replace the cover.

Reassemble everything again, and test.

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I turned my car ( 2001 Volkswagen Jetta) on tonight and I started to get a random noise in the Engine can anyone help with what this could be...


Possible that the fan belt or bearings or the alternator bearings are worn out, check the idler pulley bearings and settings.
If you pour some water over the belt and bearings side the sound might subside to confirm the case, Also using a sound probe could identify the Source of noise accurately and seems to come from the outside of the engine.

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Dell 5100mp projector fan is quiet when doing presentations on table top, but makes noise when ceiling mounted for home theatre. Noise get better after 20-30 minutes, but is just as noisy next time i...


turn it on when sitting on a table right side up. If possible, take the cover off and support carefully nearby the unit. Then slowly rotate the unit upside down and notice when the noise starts to get worse. Have a look at the fan area and see if there is anything that's causing the fan to make a worse noise. perhaps the bearings are getting worn out or something's not as titgh and vibration is being amplified by the fan unit.

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1 Answer

The outside heat pump makes a continuous buzzing noise along with a short intermittent louder/lower frquency buzz noise... the fan never turns, the house attic unit fan runs but the house never cools. ...


Sounds like your condenser fan motor (outside unit) is 'froze up.' Bearings are probably bad. I would suggest having a Service Tech check it out.

Not much you can do yourself - maybe look for an obvious loose wire or something (if you do this be sure power is all off).

It's possible a 'fan capacitor,' (a small grey/silver thingamyjig about the size of an oversized cigerette lighter) is bad - (it will have a wire from the fan motor going to it) but - "not likely."

If it (fan cap) is bad - sometimes they will 'bulge' which is a dead giveaway that it is bad. In which case you could take it down to an AC parts house and get a replacement. If you do this - be sure 'all power is off,' and you mark the wires when your remove the old fan cap - and buy an exact replacement - so you can hook it back up correctly.

Again, the most likely problem is that the fan motor itself is bad - and needs replacing which will run about $200 if a Service Tech does it.

Note: it's possible that you have a 'blown fuse' or a 'tripped disconnect,' on your outside unit - so - I would make sure that your 'fuses/breakers' are all good too.

hope this helps

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1 Answer

Noisey like a bearing going out. can i replace fan bearing or whatever bearing it is.


Modern air conditioners do not allow 'bearings to be changed.'

These days - you can't even 'oil' them (as in the old days).

Basically, when bearings go out - you have to replace the motor.

Be 'sure' it is a bearing noise and not the fan blade hitting the unit.

Also - it's possible (but not likely) that it's the bearings in the compressor making the noise.

If you're not sure - you will need to run the fan by itself. Just turn the switch to "FAN ONLY." If it still makes the noise then it's the fan.

Hope this helps.

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1 Answer

Carrier Compressor Issues?


When you shut it off and back on it slugged the compressor if you turn it off and back on before the pressures equalize between the high and low sides it will slug the compressor and it will not run should let sit for five minutes or so before restarting. The humming is either the compressor making noise usually common for the compressor to make some noise or the fan motor bearings are getting bad on the outside unit. If the unit works normal probably not much you can do till it breaks if it is the compressor it is more economical to replace the whole unit if it is just the fan motor it is worth changing. You could take an amp draw on the fan motor and the compressor to see if the are within the limits on the name plate of the outside unit.

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1 Answer

Amana Cooling Condensing Unit fan stops spinning after 15 mins


Capacitor, dirty condencer coil causing the motor amps to run too high. But most likely worn bearing on blade side of motor causing it to pull to one side causing it to over heat and shut down. Sleve bearings should have no side play.

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1 Answer

99 S-10 P/U - Blower squeaking like a banshee


You will probably have to replace the motor they are usually sealed units. You might be able to get oil to one of the bushings but it will not last too long, it's probably worn out.

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Koolspace 600 Problem


You'll need to replace the fan. The original fan bearings wear our after a couple of years. It's pretty simple to drill out the rivets and replace the fan. I suggest you replace all four with ball-bearing fan units.

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1 Answer

Outside unit not working


If the heating and cooling is working O.K. and maintaining the proper temperatures it is possible that your outside unit is in its off cycle. If the inside unit is running and the outside unit is not with an elevated temperature inside check the power supply to the outside unit. Most units have a disconnect located near them. Check the disconnect and make sure it is set to the on position. Listen for a hum noise at the outside unit which could indicate that the control power is being supplied to the contactor.

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