Thread Number: 19470
Oiling a Royal Prince Model 157
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Post# 215965   1/26/2013 at 09:10 (4,078 days old) by intv1980 (Tucson, Arizona)        

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Hello, I bought a Model 157 hand vac on ebay and I want to know how to oil it properly. I know there are two oil ports (one on the handle and one on the rear of the motor), but I don't know how much oil to put in each. Oh, and is 3-in-1 appropriate for this job?

Thanks, William


Post# 215970 , Reply# 1   1/26/2013 at 09:57 (4,078 days old) by aeoliandave (Stratford Ontario Canada)        

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Bill, you want to careful with 3 in 1. It comes in several formulations and can colors.

The one you want to use is 3-in-1 ELECTRIC MOTOR OIL. It will say so on the label.
It has the prooerties to remain and lubricate the bearings under high speed temperatures and will not glaze.

Do NOT use the 3-in-1 common kitchen oil best suited to squeaky hinges.

Sewing Machine oil, btw, is too thin for motors and is meant for sliding metal parts, which a sewing machine abounds with.

Never use silicon-based WD-40 on anything other than as a rust corrosion releaser or quick fix for hinges. Never never in a bearing or axle.

Dave




This post was last edited 01/26/2013 at 10:14
Post# 215972 , Reply# 2   1/26/2013 at 10:01 (4,078 days old) by Louvac (A)        
Absolutely....DO NOT USE 3-in-1 OIL!!!!

William, 

 

Do you yourself a favor and go buy a small plastic (or metal) oil bottle and fill it with SAE 30 motor (machine) oil. (The same oil you would use for a lawn mower, for example.) Do not use sewing machine oil or 3-in-1 oil whatever you do. These oils contain detergents and once the lubricating oil burns away the detergents are left behind to attract and hold dust and dirt. Now, all you need is 2 or 3 drops of oil in each hole. Then, DO NOT turn the machine on for a few hours so that the oil can reach the wicking material and soak in. If you run the machine too soon you run the risk of the oil not being adequately absorbed by the wick and thus oil can spurt out onto the armature. The same "rule" applies to metal uprights, as well. 


Post# 215973 , Reply# 3   1/26/2013 at 10:13 (4,078 days old) by aeoliandave (Stratford Ontario Canada)        

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Well said, Louis.
I neglected to mention SAE 30 motor (machine) oil, which, if you do your own snow-blower/lawn mower, boat engine, car maintenance, you will have lots of on hand in 1 liter bottles.

Dave


Post# 215974 , Reply# 4   1/26/2013 at 10:28 (4,078 days old) by aeoliandave (Stratford Ontario Canada)        
Notice there is no mention of electric motor or machine suit

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WD-40 is the trademark name of a penetrating oil and water-displacing spray. It was developed in 1953 by Norm Larsen, founder of the Rocket Chemical Company, in San Diego, California. WD-40, abbreviated from the phrase "Water Displacement, 40th formula,"[1] was originally designed to repel water and prevent corrosion,[2] and later was found to have numerous household uses.

Larsen was attempting to create a formula to prevent corrosion in nuclear missiles, by displacing the standing water that causes it. He claims he arrived at a successful formula on his 40th attempt.[2] WD-40 is primarily composed of various hydrocarbons.

WD-40 was first used by Convair to protect the outer skin, and more importantly, the paper thin "balloon tanks" of the Atlas missile from rust and corrosion.[2][3] These stainless steel fuel tanks were so thin that, when empty, they had to be kept inflated with nitrogen gas to prevent their collapse.

WD-40 first became commercially available on store shelves in San Diego in 1958.
------------------------------------------
5 actually useful Things To Do with WD-40:

WD-40 has been around for more than 50 years. The product that was originally meant to be a rust-prevention solvent has grown to become a useful household product with hundreds of different applications. Here's 5 of the many ways to use this diverse item.
From Extraordinary Uses for Ordinary Things, Reader's Digest Australia
Did You Know?

WD-40 made its way to the home market in 1958. The idea was inspired by employees who snuck cans out of the plant to use at home.

Caution: Do not use WD-40 near an open flame, heat source or electrical currents. Don't place the can in direct sunlight or on hot surfaces. Be sure to use WD-40 in well-ventilated areas and never swallow or inhale it.


1. Winterproof Boots and Shoes

Waterproof your winter boots and shoes by giving them a coat of WD-40. It’ll act as a barrier so water can’t penetrate the material. Also use WD-40 to remove ugly salt stains from boots and shoes during the winter months. Just spray WD-40 onto the stains and wipe with a clean rag. Your boots and shoes will look almost as good as new.

2. Clean Your Fridge

When soap and water can’t get rid of old bits of food stuck in and around your refrigerator, it’s time to reach for the WD-40. After clearing all foodstuffs from the areas to be treated, spray a small amount of WD-40 on each resistant spot. Then wipe them away with a rag or sponge. Make sure you wash off all the WD-40 before returning food to the fridge.

3. Renew Faded Plastic Furniture

Bring colour and shine back to faded plastic patio furniture. Simply spray WD-40 directly on the surface and wipe with a clean, dry cloth. You’ll be surprised at the results.

4. Exterminate Roaches and Repel Insects

Don’t let cockroaches, insects, or spiders get the upper hand in your home.

- Keep a can of WD-40 handy, and when you see a roach, spray a small amount directly on it for an instant kill.
- To keep insects and spiders out of your home, spray WD-40 on windowsills and frames, screens, and door frames. Be careful not to inhale the fumes when you spray and do not do this at all if you have babies or small children at home.


5. Keep Animals from Flowerbeds

Animals just love to play in your garden, digging up your favourite plants you worked so hard to grow. What animals don’t love is the smell of WD-40. To keep the animals out and your flowers looking beautiful all season, spray WD-40 evenly over the flowerbeds one or more times over the course of the season.


Dave, who has banished WD-40 from his workbench for almost 30 years now.




Post# 215981 , Reply# 5   1/26/2013 at 11:09 (4,078 days old) by intv1980 (Tucson, Arizona)        

intv1980's profile picture
Thanks for the tips, Dave and Louvac! I can't wait to get it! Here's a pic of the machine from the ebay seller:

Post# 216045 , Reply# 6   1/26/2013 at 17:48 (4,078 days old) by hooverboy81 (Myrtle Place)        
SAE 30 in an electric motor, really?

hooverboy81's profile picture
I have a close friend who owns a vac repair/sales shop, he said to use 3 in 1 electric motor oil (in the blue and white bottle)..I believe you know him as well, Dave. SAE 30 will only gum up the bearing, and eventually cause it to go fail. I'd take his advice on this topic as he has been servicing and overhauling vintage vacuums for the majority of his life. SAE 30 is great for a lawn mower, but not so much for an electric cleaner. I cannot imagine why one would put engine oil into an electric motor.

Post# 216048 , Reply# 7   1/26/2013 at 17:54 (4,078 days old) by hooverboy81 (Myrtle Place)        

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It's a beautiful cleaner, William! Where'd you find it? ;) Also, I meant to say *cause it TO fail...not "go fail".

Post# 216092 , Reply# 8   1/26/2013 at 23:16 (4,078 days old) by intv1980 (Tucson, Arizona)        

intv1980's profile picture
Thanks, Hooverboy81! I found it on ebay for 30.00 bucks buy it now. It's going to be beautiful when I am done with it.

Post# 216099 , Reply# 9   1/27/2013 at 00:56 (4,078 days old) by tolivac (Greenville,NC)        

Oils for "motors"DO NOT use oil meant for engines-detergent-in bearings for electric motors-the detergent additives can ruin the bearings.Detergent containing oils should only be used in ENGINES--not electric motors.Leave the detergent ENGINE oils in the garage for your lawn mower or car-but not for your vacuum cleaner motor bearings.The detergent additives in engine oil help keep engine bearings and other moving -sliding engine parts free from the products of fuel combustion in the engine.And of course you shouldn't use non detergent oils in engines.

Post# 217739 , Reply# 10   2/5/2013 at 16:29 (4,068 days old) by Louvac (A)        
Let me set the record straight....

Motor oil for Royal metal uprights IS SAE 30 non-detergent oil! I confirmed this directly with a service tech at TTI.  Since I do own several Royals and service them, as well, I have a contact at TTI with whom I discussed this matter with. A club member whom I consider a Royal guru has a vac shop also had told me years ago that SAE 30 non-detergent oil is what is called for when lubricating Royal metal uprights. I never doubted him for a second, and have used the 30 weight for years with NO problem. However, I happened to ask this question of the Royal tech when I actually called for a part number and I ran this question by him for the hell of it.  TTI (Royal) stated that their repair "manuals" also state this motor weight. So, 3-in-1 oil for electric motors is NOT recommended. And, SAE 30 non-detergent oil WILL NOT gum up bearings causing them to fail. 

 

 


Post# 217833 , Reply# 11   2/6/2013 at 03:01 (4,068 days old) by hooverboy81 (Myrtle Place)        

hooverboy81's profile picture
Well, Louvac, if that is what you choose to use in your motors, great! As aforementioned, I have a very close friend who owns and operates a vacuum shop. He learned from a man who was trained by the Hoover company. He also services Royal appliances... I wouldn't put much faith in anything "TTI" says about servicing, as service really isn't their foremost concern. I think I will stick to the advice of my friend in New York. Glad that SAE 30 is working for you! :)

Post# 414445 , Reply# 12   9/30/2019 at 00:39 (1,641 days old) by huskyvacs (Gnaw Bone, Indiana)        

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I know this is an old thread but I just wanted to add useful information to it because I came across this thread in Google and others might too.

What hooverboy81 didn't understand in Louvac's comment is that there is two types of motor oils, one for gasoline motors, one for electric motors. You use SAE-30 detergent oil in gasoline motors, and then they make a separate SAE-30 oil that is non-detergent for lubrication of electric motors. The bottle will specifically state on it "not for gasoline engines" and sometimes it might have a photo of an electric motor on the label.

I got mine at Walmart: www.walmart.com/ip/Super-...

You can use it in any electric motor large or small, but 30-weight is good for high RPM motors like HVAC blower motors and large fans, or vacuum cleaners, since they run for extended periods.

30-weight N.D. oil works great because it will still hold itself together and lubricate without being sloughed-off the motor shaft under speed and risk losing lubrication.

Non-detergent motor oil is typically recommended for lubricating electric motors that do not have sealed bearings and for lubricating bronze sleeve bearings. Non-detergent is usually specified in electric motor manuals - even for modern electric motors. This is why Royal and TTI use it because their vacuums are marketed mainly for industrial use and are used for hours upon hours a day, nearly non-stop. You need to use a slightly heavier oil so it doesn't burn up with friction.

Here's a photo I took of the care label on a furnace motor from the 60s or 70s that I got for $4.50.


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