Thread Number: 3952
Motor Carbon Brushes
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Post# 45151   6/27/2008 at 22:15 (5,753 days old) by camelotshadow (Valley Village)        

Won;t page Dr Lux
Know he has his own patient on the table

LOL

Took out my first motor brush

Got a cheapy filter queen
2 hours cleaned it up head to toe

works hi & lo
but on hi I could see into the motor is was fluming bad & arching
green
fireworks
clicking

didn't think it was good

So opened the motor again to look at that area
couldn't see naything on the brush

only thing I see is that brish is a lil lower on the armature than the other side

took the brush out
its long guess about 1 1/2 inches

So I heard over 1 is ok

cleabed the pink holder
cleaned under the top motor
couldn't see anything really

put the carbon back in & on the motor
held its fine but screwed down the top of the carbon is below the top of the armature
where as the oher side is level with top

Thought maybe it was upside down
but I couldn;t get the carbon out'
its held
so left it as it was

tried a few times to screw it down as best I could
it still wants to sit down

tested it outside on lo
ok

tested it in hi
didn't see to plume like it was
but it was bright out

Anyway did all I could do so I put it back together

its seems to just be a normal sparking brish now on hi
no worse than any of the others

So what was it?

Maybe it was a new brush & not set well?

Anyway it seems better

Good thing I thought I had a 2nd lo only vac

LOL

Still this one was worth the parts but being a darn 82
its more plastic inside
but on the positive side
the motor is 8.3 amp without pn & 9.5 with

without ots almost 2 amps more than a 78 model
Has the new style motor

Still I needed the parts & this one had the retract cord dolly & it works too...

I figure I could put any motor in it & still keep that nice dolly feature

It will evenutally get good old metal insides from one of my old half workers

LOL

Here's the brush orientation
pick taken when I finished
the right side is the one I had out


Post# 45152 , Reply# 1   6/27/2008 at 22:18 (5,753 days old) by camelotshadow (Valley Village)        

the brush extended

I changed the distributor cap on my benz
I do know that arching can create carbon deposits on electrical parts
more carbon more arching as the carbon seems to conduct electricity
least you lose a good spark to the engine

anyway would cleaning the brush holder be all it needed?
or was it blackened becuase it was arching?




Post# 45177 , Reply# 2   6/28/2008 at 13:59 (5,752 days old) by camelotshadow (Valley Village)        

found this
guess you have to replace the entire colored unit when you do
My brushes are at least 1 in so well one is so its likely the other is.

Good thing I looked though it was obvious from the outside
as when the motor was on high after abiut 30 sec you could hear something
clicking & when looking in top there was a bright green plume lit up the entire inside

Could be why it got the boot...

LOL

Still brushes look to be hardly used or else they were replaced as it is a 82 motor & casing also is stamped 82

Motor looks ok cept I notice on top of armature
there are the copper top but in a few locations it appears to either be missing or else covered in the cement they seem to be set into that makes the top of the armature...

pic tries to show this

Also found this says lil spark at brush is ok
but not so it wraps around...anyway what I saw was not good
hope it stays away

Also says something about top & field angle
says it controls speed of motor & to reinstall exact way

I didn't open this motor up but I probably will at one time
as I did have success with the 2 power nozzle motors I did
thelast one had the entire thing apart & got it back together

Yeah!

It's good to help out a poor vac in need...

:)


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