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Motor is making blue sparks. May be cord or worn out brushes. How do I change brushes on Kirby G4?

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It's the brushes for sure!!! My switch repair guide will get you down to the carbon brushes easily...

http://reviews.ebay.com/REPLACING-THE-POWER-SWITCH-ON-ANY-KIRBY-G-SERIES-VACUUM_W0QQugidZ10000000003752018

marci

Posted on Jul 31, 2008

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1 Answer

Kirby G4 plugged in won't come on? Is there a reset button and where is it?


There is no reset on a Kirby. Remember that the motor will not run unless the bag assembly and vacuum head (or hose) are fully in place. If this is not the problem, the most likely causes are either a bad cord, a bad switch, or a worn or stuck carbon brush in the motor.

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Kirby does not turn on


First be sure the bag assembly and head are tightly installed on the motor unit. Safety switches prevent operation with the fan or motor outlet exposed. If this isn't the problem there are 3 possibilities. 1 - defective cord, 2 - defective switch, or 3 - worn carbon brushes in the motor.

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Hello can you help me please? I have a Kirby G4 vacuum cleaner, It did work ok until it started to give off burning smell and lots of sparks from the brushes. I have changed these brushes, the motor still...


Some debris, even sand or dirt, probably got into the motor, causing damage to the armature. If this is the case, you will need to replace the motor. The burning smell from the motor is generally a sure sign of a bad motor.

Jan 02, 2011 | Kirby G4 Bagged Upright Vacuum

1 Answer

How to dissasmble vacuum cleaner, kirby g4 to check if motor or switch is bad


before you do all this, check the cord where it mounts to the handle up top by the pivoting strain relief. Frequently the cord goes bad right where it snaps in the strain relief.
first you will need to remove the handle, bag, and the cord. there is a release button for the handle, the mini emptor on the bottom of the bag twists off away from the body. there should be 2 screws on the scuff plate, one to hold the cord strain relief and another down by the transmission for the scuff plate. use a small flathead screw driver in the slot of the scuff plate and pry up. it will pop off. you should also take out the screw in the cord cover where it plugs, pop the cover off and remove the cord. now you can remove the top cover. there will be 2 screws in the front of the unit, and 2 screws under the scuff plate. they are either phillips or T15,T20 torx. remove those 4 screws and you can lift the top cover off and access the motor and the switch. check for bad motor carbon brushes and a worn commotator where the brushes ride. let me know if you need anything else.

Jan 03, 2010 | Kirby G4 Bagged Upright Vacuum

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Kirby g4 brush wont turn belt ok


your belt has probably been stretched to the point where it will not work so good.

Jul 02, 2009 | Kirby Ultimate G Bagged Upright Vacuum

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Kirby g4 vaccum


please clarify what you mean?
Do you mean motor bearings or brush roll bearings?
brush roll bearings can be adjusted to lower the brush closer to the carpet when worn.
to do this remove the front brush assembly, there is usually a sticker below the belt hole showing RED = POSITION 1 HIGHEST (ie a new brush roll)
GREEN = POSITION 2 MIDDLE (brush part worn)
BLACK = POSITION 3 LOWEST (brush fully worn)
At each side of this there are 2 clips unlock these and remove the bottom cover.
Release the belt tension by rotating the belt release at the front.
Before removing the brush roll, at each end of the brush roll there is a grey plastic bearing carrier (Square at the ends) MARK this with a pen or marker just so you know the original position, also look closely for the coloured markings as indicated above or numbering 1,2 or 3.
If RED or "1" is showing you need to remove the brush roll by pulling it out and rotate the endcaps to Green or "2" and re-insert the brush roll, If Green or "2" is showing then rotate the endcaps to Black or "3" and re-insert.
If Black or "3" is showing then the brush roll is worn and cannot be adjusted any more, fit a new brush roll and insert with RED or "1" showing.
To re-attach the belt, move the belt to the middle of the roll and rotate the belt knob at the front ensuring the belt engages with the hook on the inside.

May 09, 2009 | Kirby G4 Bagged Upright Vacuum

3 Answers

G4 kirby


ensure the safety switches are made properly by making sure the front brush assembly is fitted properly, you will see a tag that enters the machine making the front switch, secondly make sure the bag bottom housing is on properly and fully rotated so that its tag makes the switch on the side.
The only fuse is in the plug (UK).
Common fault is the mains lead broken internally, unplug from the side of the machine after removing the little cover where the wire goes in. You can use a kettle lead to test the hoover.
If this does not cure it most likely the motor brushes are worn.

Jul 24, 2008 | Kirby G4 Bagged Upright Vacuum

3 Answers

Good armature maybe needs new brushes


You can replace the carbon brushes and most repair shops should have them. Also tho, the armature could be causing the problem, if you put in new brushs and it still arcs badly, then the armature is bad.

Apr 16, 2008 | Kirby G4 Bagged Upright Vacuum

1 Answer

Electrical


PROBLEM: THE KIRBY WILL NOT TURN ON AT ALL
POSSIBLE CAUSES:


Please note......The Kirby has TWO safety switches that need to be engaged before it will operate. One is on the fan case in the front. It is activated by having an attachment attached to the front. (hose, power nozzle, etc.) The other switch is on the side of the Kirby where the cloth bag attaches and is engaged by the little tab that sticks out from the side of the hard plastic cloth bag "boot". The bag boot MUST be completely engaged to activate the safety switch and allow the Kirby to power on. If you are having trouble getting the bag to properly engage, (sometimes they are STUBBORN) simply lubricate the black gasket that the boot fits onto with gasket lubricator, VASELINE, or try a tiny drop of DISHWASHING DETERGENT or HAND CREAM. It doesn't take much, so use the smallest amount possible to get the desired effect. You should hear a slight "pop" when the bag completely engages.
If neither of these things are indicated, it is probably again, either the power cord, switch or the carbon brushes.

If your Kirby is sparking there are a few causes...

PROBABLE CAUSE (MOTOR): Worn out carbon brushes, bad armature or perhaps BOTH
PROBABLE CAUSE (CORD): The cord has a short in it. Replace the power cord
PROBABLE CAUSE (POWER NOZZLE): There is something metallic stuck in the fan or power nozzle

I think you have a problem with the carbon brushes and amature because of where you describe seeing the sparks. I would suggest taking it to an authorized dealer for repair if it is the motor that is going bad.

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