Thread Number: 20611
Electrolux Model G Motor Slowing |
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Post# 230779 , Reply# 1   5/1/2013 at 07:41 (3,984 days old) by scvacuumguy (SC)   |   | |
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Post# 230783 , Reply# 3   5/1/2013 at 08:40 (3,984 days old) by s31463221 (Frenchburg, KY)   |   | |
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I too am inclined to think the bearings are getting worn and causing the "growling" noise and the motor slowing down. I'm not sure how comfortable you are in tearing into this machine's motor to check the bearings/brushes/armature, etc. but if you are willing to try it, you may want to see if you can get in contact with Nathan Thomas (electroluxdude) on here. He really knows his stuff when it comes to tearing into and rebuilding these Electrolux electric motors. They are indeed wonderful machines and I really hope you get your machine fixed for many more years of use! Good luck!
Steve |
Post# 230821 , Reply# 5   5/1/2013 at 12:51 (3,984 days old) by s31463221 (Frenchburg, KY)   |   | |
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Alright! If you're comfortable tearing that thing open, I'm going to post a copy of an old posting that Nathan Thomas posted back in the archives on how to go through the motors, replacing/repairing necessary items, etc. His instructions are for a later model Super J Electrolux, but the motors are practically the same, I believe this is something you will find useful....I know it's helped me out of many scrapes when I'm tearing these motors apart!
"Hey, Guys, Nathan Here, I will be glad to help you re-build your Super-J's. To access the motors, here are some the steps you will need to take. The first thing you will need to do is to remove the top trim cover. It is held on by 3 screws--2 of which are located underneath the blower door. A third screw, usually phillips, is near the rear of the machine by the switch. After removing the top trim, there are 3 screws that hold on the cordwinder. 2 of the screws are on the top, and there is another screw on the bottom of the machine. They are phillips. After removing the 3 screws, you will need to disconnect the clear tube from off the top of the cordwinder. Your cordwinder can then be removed. Disconnect the 2 wires from the cordwinder. To gain access to the motor unit, there are 4 size 11/32 nuts inside the machine. You will need a long socket to get to them. After you remove the 4 nuts, you can then pull the plastic motor cover out. Disconnect the wire that has the little white plastic connector on it, you will have to separate the two little "Wings" that snap it in place. This isn't very hard, I just use my fingers. After you have disconnected the wires, you can pull your motor out for service. To gain access to the inside of the motor, loosen the 4 screws that are located on the fan housings. If your fan housings are rusty, you will have to loosen them with WD-40. If not, they should come apart relatively easy. I sometimes use a flat-head screwdriver and tap them apart. Loosen the 3/4 size nut on the top fan, remove the top fan, the middle housing, and the bottom fan. Make sure that you label your fans, TOP for top, and BOTTOM for bottom. They must be replaced in the exact order as removal. I will say this about Super-J's--They are notorious for having bad armatures.Replacement Armatures are usually available from places like HESCO, Electric Sweeper, etc. Check your website for Vacuum Cleaner Replacement Parts. I have sometimes taken the motor out of an old Lux 1205 and put it in. This is not hard to do, you simply have to modify the wiring of the 1205's motor a little. It is worth it to rebuild the motors though, as once they have been cleaned and have new bearings, armature and new motor brushes, they will be as good as new. To continue to clean your motor, use an old brush and dish-washing soap, and wash and clean the fields, and clean the fans the same way. To gain access to the bearing, there are 3 screws that hold the bearing housing to the motor, they are phillips screws. Remove the screws and then you will have full access to the motor and fields. Clean the motor thoroughly. After cleaning, dry the motor with a hair dryer. To replace the bearing, you will need to drill out the pop rivets in the bearing plate. Bearings are readily available, from any bearing supply house. Remove carbon brushes, which are held in by a wire with a clip-on connector on it. I highly recommend replacing the brushes, as on a vacuum that is more than 30 years old, it's just simply a good idea. To re-assemble, simply reverse my directions. If you will carefully follow my directions, and, with a good cleaning, your vacuum should work like new! If you have any questions, please feel free to contact me. My e-mail is: thetrain48@yahoo.com. Happy to be of assistance Nathan L. Thomas Electrolux-Dude" |
Post# 230834 , Reply# 6   5/1/2013 at 14:12 (3,984 days old) by dysonman1 (the county)   |   | |
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Has only one ball bearing. The bearing at the commutator end is a sleeve bearing. There are really only two things it could be. If the bearing was indeed bad, you'd hear the noise constantly. It would never go away. The other thing causing the motor to slow down is a carbon brush stuck in it's brush tube. I see this ALL the time with older Luxes. Remove the carbon brush and holder from each side of the motor. Remove the brush and use a Q-tip with rubbing alcohol to clean the brush tube. Also make sure the open end of the tube that faces the commutator hasn't been damaged. Sometimes they are, and won't allow the brush to come through. Easy fix really. Reseat the brushes after reassembling using a carbon brush seating stone (if you can't find one, a lead pencil will work). Hold the seating stone against the commutator of the running motor for a few seconds, and it will seat the brush to the commutator perfectly.
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Post# 230835 , Reply# 7   5/1/2013 at 14:21 (3,984 days old) by Ultimatevacman ( Leeds, West Yorkshire, UK)   |   | |
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Post# 230837 , Reply# 8   5/1/2013 at 14:58 (3,984 days old) by kenkart ()   |   | |
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Tom has got it, I have had similar problems with Eluxes in the past, the brushes will occasionally stick causing the motor to make weird noises. |
Post# 230852 , Reply# 9   5/1/2013 at 17:42 (3,983 days old) by erikd ()   |   | |
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Thanks so much everyone! Just the kind of advice I was looking for! You guys rock! Those instructions are sweet! I'll be operating this weekend. I'll let you all know what I find. Thanks again, Erik |
Post# 231086 , Reply# 11   5/3/2013 at 16:53 (3,981 days old) by dysonman1 (the county)   |   | |
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If a ball bearing is bad, it will always cause noise and vibration, at start up, during running, and upon shut down. In a few instances of very old cleaner being used for the first time in decades, the grease in the ball bearing has to be liquefied by running in order to lubricate the balls in the bearing. But generally, a bad bearing will always make the noise.
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Post# 231131 , Reply# 12   5/4/2013 at 02:43 (3,981 days old) by Ultimatevacman ( Leeds, West Yorkshire, UK)   |   | |
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Post# 231441 , Reply# 14   5/6/2013 at 09:51 (3,979 days old) by kirbylux77 (London, Ontario, Canada)   |   | |
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I do hate to have to be the bearer of bad news, but I think your motor will require replacing the motor entirely. With our Canadian Electrolux vacuums, in which the motor is VERY similar to yours, when the motor starts to "slow down", & yet the bearings & carbon brushes are fine, it's a sign the motor is dying. At least the motor gives you some warning, though....unlike some other "normal" canister vacuum motors in which it just won't turn on again or start to smoke.
Rob |