Hoover 300 motor problems

[kirbykid]

More motor problems Ive got a few questions for this one.


1. Is there a way to secure the motor brush holders? One of them is very loose.


2. Does anyone have any motor brushes for this motor?


3. Why is there black tar in the motor and is it cleanable?


4. Can i just wash the entire motor?


5. How do you disassemble and clean the top motor bearing?


Any help will be greatly appreciated.

 

[kirbykid]

The top motor brush has been loose and is worn unevenly. Should i just keep it the way it is right now?

 

[kirbykid]

There is a thick coating of this black stuff all over the motor.

 

[kirbykid]

How do you clean this? 

 

[beko1987]

I'd dunk that in a jar of tar/grease remover (or turps) for a day, then shake and repeat. Then pull out any hairs, threads etc, try and flick the gunk out with a screwdriver, spin the bearing in the grease remover then let it dry. Bit of wire wool should clean thetop up nicely enough. Then re-pack with grease.

 

[kirbykid]

I cant even get to the bearing out of the metal holder it is in. so i wouldnt be able to repack it.

 

[beko1987]

It looks press fitted, and I've ruined bearings in the past trying to get them out! Pick the worst out with a screwdriver and soak some oil in?

 

[kirbykid]

Okay i will try that. do you know if it is a sleeve bearing or is it a regular bearing

 

[beko1987]

No idea I'm afraid! If it's pressed in I'd say regular, but that's based on no real knowledge at all!

 

[hoovercelebrity]

I generally don't do much to the upper bearings. I clean them off with a damp rag then polish them with some steel wool. A few drops of zoom-spout oil, and let it sit updide-down for a day or so before reassembling.

As for carbon brushes, check a larger, local Ace hardware store. I've found replacement carbon brushes for various appliances (vacuums, mixers) in those little drawers with all of the compartments that hold screws, cork pieces, etc.. Not every Ace carries them, but they're out there. The drawers I'm talking about look like this:

 

[kirbykid]

Okay I will go to my local ace hardware and see what they have. Is it possible to cut motor brushes down to size?

 

[bvac6]

300

I restored one of these many years ago, the brass brush cap is held in by a little circular piece of metal that slips in behind the flange on the end of the carbon brush housing tube. They are very easy to loose! I may even have a spare somewhere. As for the "tar" its a combination of old grease, carbon dust, and just plain dust. It cleans of easily with electrical part cleaner or even carb and choke cleaner. I would clean each piece individually. As for the top bearing they are very well sealed in there. Just flush some fresh, clean electric motor oil into it. I like to clean the brass sleeve in my sealed bearings with a q-tip lightly saturated with electrical parts cleaner, that way no stray dirt is clogging it.

 

[kirbykid]

I have the clips, and they work fine. But the entire brush holder is loose. not just the brass cap that goes on the end. I will try to post a video of how loose it is. But i have no idea how to do that...