My parents had a dehumidifier bought in 1960. The fan quit in 2010 when the windings open circuited. The bearings were still fine even though they had never been lubricated after it left the factory. I'm not sure what kinfd of bearings are in it. I should take a peek. I found another motor that was similar and strapped it in with a hose clamp. I'm hoping for another 50 years. Regards, Pete
Hard to go wrong with a Chevy. I plowed snow for years with my 1980 and will some day plow with my 1987, when I get the blade moved from the old one to the newer one. Both are 3/4 ton. I started plowing with my 1970 CJ-5 and still have it. The body is in great shape and I rust proofed it with motor oil but it was the oil that spent a few thousand miles in the engine firat. Pete
The blower and it's motor in my home made air conditioner is from 1952 and running fine with motor oil. My 3,600 pound lathe dates back to 1911 and motor oil keeps it turning out parts. If someone has a better alternative, use it. Regards, Pete
...who remembers 3-in-1 oil? I'm sure they still sell it, at least at the "real" HW stores. I still have a couple of cans that I use for everything that WD40 doesn't fix! Most of the items I oil (all quite ancient) have little oil ports with spring-loaded covers that flip up to allow the tip of the oil can to enter. I also have an old pump oiler that I usually keep filled with SAE30 for lubing items that want a thicker oil. Between those two, I can lube about anything except fine watches (that were mostly designed to use ONLY whale oil!).
I'm guessing that anyone with the courage to tear apart their appliances will already have some means to apply lubrication. I've been called on the carpet for using automotive engine oil. I have a Hendey lathe that weighs 3,600 pounds and will be 101 years old next month. Motor oil keeps it going. I just did a job on it for the Army Corps of Engineers last year.
I'm a bearing engineer by profession and have know for a long time that common lubricants such as oils and greasse have certain lives, which are greatly reduced by temperature. I've also realized that "lubricated for life" means that, "when the lubricant is at the end of its life, the life of the bearing ends shortly after." This is true even though the bearing has enough capacity to have a much longer life. So, it is an obvious conclusion that replenishing lubricant will not only extend bearing life, but also extend the life of the component, even though the OEM says the component is not serviceable. Small ball and needle bearings can be purchased over the counter from bearing distributors and industrial supply houses if one wants to undetake such a replacement. Often, the counter man will measure the bearing and supply a direct replacement. This works for rolling element bearings. For "sleave bearings", simply adding more oil is sufficient to keep the component running provided the bearing hasn't been galled or scored badly.
If the motor has been stalled with power on it for a period of time, the rotor will become extreemely hot. It may take well over an hour for it to cool down enough to work on. I've done the same maintenance on my dehumidifier blower motor. (Its about 24 years old now) I use 3in1 for motors. It's in a blue bottle. I got that at a home improvement store that went out of business over 10 years ago. In the case of my blower motor, it acutally recommended that it be oiled every 2 years (on the motor). Nothing about that in the owner's manual.
I bought a 1989 Chevy full size pickup new in 1989. It had ball joints that were lifetime lubed. They had no grease fitting, no plugged hole, nothing. When it was about two years old the front started to make a clunking sound. I took it to the dealer. As I pulled into the shop and drove over the crack between the blacktop parking lot and the cement floor, the service manager heard the clunk, and said it needed new ball joints.
Chevy had a service bulleting that indicated to change the lifetime lubed ball joints with ones that had a grease fitting. Regardless of the mileage, regardless of in or out of warranty, replace at no charge. It even went so far as to have the dealer refund any ball joiint replacements that they had already done, again, regardless or warranty coverage or mileage.
At least Chevy dealt with the problem and had satisified customers.
My house air-handler is around 30-40 years old. Big squirrel cage belt driven by a moter. The squirrel cage bearings and the motor bearings all have oil fill ports. With regular oiling maybe they'll last a few more decades.
I bought an oil bottle from a home improvement store (I don't remember which one). Not only does it have the correct oil, but the plastic bottle came with a small flexible tube (maybe 6" long) for dispensing. It's perfect for reaching the fill ports. Perhaps it would also be good for reaching in to oil "permanently lubricated" bearings?
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