Thread Number: 41407  /  Tag: Recent Vacuum Cleaners from past 20 years
Kirby brush height query
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Post# 439020   2/22/2021 at 10:16 (1,151 days old) by gob (united Kingdom)        

Hi
I have a Kirby Sentria G5 (approx 15 years old).
We are struggling with the head height adjustment. It either spins too freely and doesn't pick up or the next notch down is too low and the brush stops spinning.
I have tried the different brush settings (1.. 2.. & 3..) but neither help.

Could this mean after all these years we are ready for a new brush?

thanks for any suggestions.


Post# 439024 , Reply# 1   2/22/2021 at 11:27 (1,151 days old) by vacuumkid47 (Sibley, IA)        

vacuumkid47's profile picture
Do you know what kind of belt is in it? You may have to change the belt but also checked if it is a knurled belt, which has a textured pattern on the inside of the belt, and if it is not, replace the belt with a knurled belt.

CLICK HERE TO GO TO vacuumkid47's LINK


Post# 439025 , Reply# 2   2/22/2021 at 11:44 (1,151 days old) by rivstg1 (colorado springs)        

rivstg1's profile picture
if you turn the Kirby upside down, looking at the brushroll fiber against the metal head bottle plate.....if the bristles protrude at least 1/16th of an inch, ( on whichever brushroll height is set) then its okay. 1/16th protrusion is the minimum length recommended by Kirby..

Post# 439028 , Reply# 3   2/22/2021 at 12:49 (1,151 days old) by human (Pines of Carolina)        
Check the Brush Roll and Belt...

human's profile picture
Kirby brush rolls are adjustable to, I believe, three different mounting positions as they wear down. This allows you to get the most out of your bristles before replacing the brush. To adjust it, remove the floor nozzle from your Kirby and pull the brush roll out of it, observing the brush roll ends to see which Roman numeral is facing into the nozzle. Then rotate the brush ends to the next higher number and reinsert the brush roll. As others have said, it may be also be time to change the belt. They do stretch out and lose elasticity over time, even if they still look okay. I would just do it as a general maintenance item since you have things apart already.

Once you get everything back together, the proper method of adjusting the brush height when running the machine is to put the floor nozzle at its highest setting before turning it on, then gradually lower it until you hear a change in the pitch of the motor, then click down one more notch. You'll now have firm contact with the carpet and you'll be amazed what it will pick up.


Post# 439030 , Reply# 4   2/22/2021 at 13:14 (1,151 days old) by Lesinutah (Utah)        
Spring

lesinutah's profile picture
In the toe touch/ height adjustment or stripped assembly. This wouldn't cause the brush to stop spinning. Either a lose belt or a broken belt or belt not engaged to the motor shaft.
In layman terms check to make sure the belt is off the lifter on the spindle. Make sure the belt isn't loose.


Post# 439040 , Reply# 5   2/22/2021 at 16:31 (1,150 days old) by Blackheart (North Dakota)        
Sounds

blackheart's profile picture
It sounds like your belt is worn and should be replaced, It takes a fair amount to stop a brushroll with a "healthy" Belt So i'd change that first and see if that fixes the issues.

Post# 439060 , Reply# 6   2/23/2021 at 03:46 (1,150 days old) by huskyvacs (Gnaw Bone, Indiana)        

huskyvacs's profile picture
Trust me - it takes a lot to stop a Kirby belt. They can suck an entire throw rug into the nozzle and the belt will still be trying to spin the brushroll. lol

The easiest and quickest solution to try first is new belt, make sure it is on there correctly, then make sure you set the nozzle to the right height. I doubt the brushroll itself is at fault, as I have never seen them go bad even on severely rusty vacuums.






Post# 439086 , Reply# 7   2/23/2021 at 17:56 (1,149 days old) by gob (united Kingdom)        
Thanks all

The belt does indeed have a split in it so I suspect that in not performing optimally.
Looking to find a genuine replacement.

Cheers!


Post# 439093 , Reply# 8   2/23/2021 at 22:27 (1,149 days old) by human (Pines of Carolina)        
eBay is the place...

human's profile picture
My go-to for that sort of thing is eBay. Go ahead and order a multi-pack to reduce your unit cost. Belts do need replacing periodically and it's way more convenient to have spares on hand to minimize down time.


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