showcrop

Well-known Member
One of our window units quit a few weeks back, and today I decided to take a look at it instead of spending the money to take it to the transfer station. The T-stat checked out so I went to the compressor. I had to remove a plastic cap that covered the connections, and there was the problem, just a burned off terminal. The unit is fairly old, made in US by Crosley probably twenty years ago. I spent three times more time cleaning it than the repair took, and I oiled the blower motor bearings. Maybe it will last another five years. It makes you feel good to repair something rather than throwing it away.
 
It's amazing how many window AC's get tossed just 'cuz they need a good cleaning of street dirt and mulched bugs slung by the condenser fan against the inlet side of the condenser.
 
Many times the terminals rust because you may not
remove it from the window in the winter, just cover
the outside with plastic. The plastic traps
mositure, rust.

Other times, it's just old. Hope you replace the
ends on the wires.
 
You mean like this ? I never realized they do this, this one had the dual capacitor fail on one side, so I found a close replacement at a local supply house, $12.00 !, Prior to putting it in the window, every season since, I take the cover off and clean it out, though its never looked like this again, must have been when I had it in NJ, when all the fuzz is in the air., it's an '02 8500 btu, on its 14th season, and still reads as cool as it did then. Just that little area allowing air to pass, surprised it did not ruin the compressor. All it takes is a screw gun, or plain ole Phillips head, compressed air and or a water hose.

I also drilled a weep hole, the condensate made a mess of the housing, I've heard yes and no on that, but it's worked fine since.
a166791.jpg
 
How did you oil the fan bearings, I thought they were sealed? What did you oil them with, just curious, as per the below, I have learned to take the cover off every year and make sure its cleaned, use a military double ended stiff tooth brush that comes in your rifle cleaning kit, to comb the fins if any are mashed etc. I would have to think most do get tossed because they don't service them and its about as easy as it gets, I've had this on almost completely apart, Styrofoam duct inside got black mold, I used to keep it running, cool the room then turn it off, big mistake, condensate, better to let it run thermostatically, and listen for the compressor to go off and let the fan dry it out before shutting it down, no more mold, due to moisture build up, once I cleaned it all out.
 
1988, the hottest, most miserable year ever in N Illinois wife was pregnant and a/c was on the way out. Happened to stop at the tavern after work and the local hvac. guy came in and set beside me. He just happened to have one he took in on trade on a central a/c install.
Wife survived, son had a birthday Tuesday and he got married 2 weeks ago today and the old a/c unit is still running right behind me. It's a General Elect.
 
(quoted from post at 11:41:47 08/23/14) How did you oil the fan bearings, I thought they were sealed? What did you oil them with, just curious, as per the below, I have learned to take the cover off every year and make sure its cleaned, use a military double ended stiff tooth brush that comes in your rifle cleaning kit, to comb the fins if any are mashed etc. I would have to think most do get tossed because they don't service them and its about as easy as it gets, I've had this on almost completely apart, Styrofoam duct inside got black mold, I used to keep it running, cool the room then turn it off, big mistake, condensate, better to let it run thermostatically, and listen for the compressor to go off and let the fan dry it out before shutting it down, no more mold, due to moisture build up, once I cleaned it all out.

I don't really know if I got oil onto the bearings or not. The set up looks a lot like in the AC unit of a tractor with a shaft out either end of the motor. The one of those that I had apart once was just bronze bushings, so if that is what this AC unit has it seems that a few drops on the shaft would wick in there pretty good.
 
To properly oil most window AC's you have to take
the fan apart, soak bearing and packing around
bearing with oil, then put back together. There is
no other way.

I use full synthetic oil, seems to last longer. I
usually get about 10-15 years on a fan motor
before oiling it.

Recently I had to take apart 3 whirlpool fans and
oil. All about 15 years old. All bearings started
talking just weeks apart. Two were the inside
bearing next the the squirl cage, one outside.

If I had to pay someone, it would be better to buy
a new AC, but I like the challenge and have
nothing better to do.
George
 
(quoted from post at 10:21:52 08/23/14) Many times the terminals rust because you may not
remove it from the window in the winter, just cover
the outside with plastic. The plastic traps
mositure, rust.

Other times, it's just old. Hope you replace the
ends on the wires.

My window AC units come out of the windows and into closets in the fall. Way too much heat loss through them in the winter, although you do see them covered up and sometimes just left, but that would have to be renters with utilities included. I replaced the burned terminal. I have never figured out how to uncrimp one to reuse it, LOL.
 

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