Tip & How-To about Heating & Cooling
For the last several years manufacters of small motors have been making and installing these 'oiless motors' in window units and residential central air conditioners, both in the inside furnace and the outside condensing unit.
The idea behind all this - is that they are 'oiless.' Hmph!
By being able to 'oil' motors we can extend the life of a motor - so doesn't it make sense to make them where they can be 'oiled.'
Yes - unless your business depends on "Selling Motors." Get the idea?
Anyway - if you have one of these 'oiless' motors that is 'froze up will not run, or squeals/sqeaks real loud when running (if it is running) - you are in a world of hurt because the 'fix' as any good Service Tech (working for most companies including himself will tell you) ... the 'fix' is to buy a New Motor.
And.... he/she would be right ... partially.
I agree that when a motor freezes up and will not run, and it's hard to even turn the shaft manually - (or when it's beginning to 'squeal and squeak real loud) - well - I do agree that it (motor) is probably 'done for.'
However ... there is a little trick that I've done that does have a chance (better than 50-50) of working - and will extend the life of the motor - sometimes for years!
That is to take one of these oiless motors that is giving you trouble and by using a drill - 'drill a 'small hole' into the "top" of the casing of the bearing.
You can find the 'bearing casing' by looking at the spot where the motor shaft first comes out of the motor (on double shafted motors there will be one on each side). The bearing is like a 'ring on your finger' - it rides on the shaft of the motor and is encased in a metal casing. This 'casing' is where you want to drill the hole.
Be sure the hole is very small (and on top) - just big enough to get the plastic spout of a small bottle of machine oil into the hole - which is the way you will be able to 'oil' the bearing once you've drilled the hole.' You don't have to worry about how much oil (necessarily) you squirt in the hole either - for if the bearing is already dry and causing trouble - 'the more the better' is usually the rule.
Note: be sure to do this on both bearings of a 'double-shafted' motor.
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