jsfulsam
Member
So I recently got myself a decent-looking electrolux 1205 for use around the house. It replaced a real lemon of a modern vacuum, and has been one of the best vacuums I've ever used.
So, it saddens me to find out that it's starting to develop a problem with the motor. Here are the symptoms I'm noticing. These slowly start to appear after the machine runs for a little bit.
-Motor hum starts to get sharper and more pronounced.
-Rattling noise appears, and gets louder.
-Motor speed begins to drop
If I need to make any sort of video or audio recording to illustrate this, I will.
I'm not afraid to tear into the motor (Already had the vacuum apart once as a practice run) If anything, I'd like an expert's opinion on what could be wrong with the unit. I'm not sure if it's a lubrication issue, or if the brushes are improperly contacting the commutator.
IF it's a lubrication issue, can lubrication with blue-can 3-in-one SAE-20 oil solve the problem, or will I have to look into bearing replacement?
On the other hand, if it's a brush/commutator issue, what typically goes wrong here? Will cleaning out the brush holders with alcohol do the trick? Also, how indispensable is a seating stone?
Attached a picture of the motor to illustrate the condition of it. Maybe an astute viewer can pick up something.
Anyway, I'd appreciate any advice you guys can give.

So, it saddens me to find out that it's starting to develop a problem with the motor. Here are the symptoms I'm noticing. These slowly start to appear after the machine runs for a little bit.
-Motor hum starts to get sharper and more pronounced.
-Rattling noise appears, and gets louder.
-Motor speed begins to drop
If I need to make any sort of video or audio recording to illustrate this, I will.
I'm not afraid to tear into the motor (Already had the vacuum apart once as a practice run) If anything, I'd like an expert's opinion on what could be wrong with the unit. I'm not sure if it's a lubrication issue, or if the brushes are improperly contacting the commutator.
IF it's a lubrication issue, can lubrication with blue-can 3-in-one SAE-20 oil solve the problem, or will I have to look into bearing replacement?
On the other hand, if it's a brush/commutator issue, what typically goes wrong here? Will cleaning out the brush holders with alcohol do the trick? Also, how indispensable is a seating stone?
Attached a picture of the motor to illustrate the condition of it. Maybe an astute viewer can pick up something.
Anyway, I'd appreciate any advice you guys can give.
