Dual Sanitronic disassembly Question ?

[jpsbgt]

With the help of Les and Rob on this site I’ve become a bit more knowledgeable about Kirby’s, thanks guys ! Also everyone else who has taken the time to answer my questions. Still not sure how to remove fan from armature ? I see a hole in shaft above fan and also one below in housing. Just not sure best method to remove without damaging something...thanks

 

[bikerray]

There is a special tool to lock the armature, but if you don't have that an ice pick or awl will work.

Put an ice pick in the hole in the armature inside the motor housing to lock it in place (as you turn the armature the ice pick will rest against the motor housing) then take another ice pick and place it in the hole in the pulley shaft and turn it clockwise to unscrew the fan and pulley off of the armature.

 

[texaskirbyguy]

You might have missed this thread, which could help you in more ways than one... )
http://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?34091_7

In reply 1, buried mid way:

It is easier to separate the fan case first before loosening metal fans. After case separation, I insert a scratch awl in armature hole by motor cooling fan (for Classic S7 and older machines). I grip the fan with hand, thumb, and fingers, as low as possible to avoid breaking any blades. (Remember this has reverse threads!) Then I give the fan a firm, sudden twist clockwise and it should come loose easily. Keep giving firm twists until it comes off.

The fan on my mom's original D50 was rusted on, perhaps because she used the shampooer. I actually bent my Craftsman scratch awl getting hers off! I almost thought I would break blades off but it finally came off.

A scratch awl is like an ice pick made to screwdriver strength. An ice pick or thin screwdriver MAY work but it depends on how tight the fan is.

 

[lesinutah]

Hey

I think I sent pics explained but I think it didn't go through.
On bottom right of vacuum is opening. Inside hole you can see blades of Armiture. In the middle of Armiture right below and when I say below 1/2inch at the most is a hole. Some people use a screwdriver with really small hex bit. I've busted 3 bits doing this. I've also tried hole punch this broke as well. I finally got ice pick and put in hole. You keep the Pic in the hole to stop the Armiture shaft from moving. While keeping Pic in place rotate fan counter clockwise. Once it pops so you can loosen by hand pull up on the fan separating from bearing plate. It should come up about 1 inch or more. Once you pop it up off bearing plate you can spin it off think of wheel of fortune spin and it keeps spinning on its own until it comes off.
Keep track of bearings and how they are position. So when you reinstall fan you do correctly. With fan removed take out Pic and in the same hole use a screwdriver and pop off bearing plate. Again there is a bearing built into bearing plate on Armiture side. To tap out bearing in plate I'd say use top of fan impeller but empellor is built into fan. Use a small socket to pop out. It may not come out. Before you take out Armiture take caps off and take out carbon brushes. Once brushes are out pull upwards on Armiture shaft and it's out. It will have bearings on bottom of Armiture. I have bearing removal tool take off bearing and repack it. In bottom of motor housing is 2 washers a flat one and washer kind of looks like propeller in plane. Circular with three notches reminds me of a propeller. When you put these back in grease these too because Armiture spins on these washers and alot of friction. When you reinstall everything install carbon brushes last and last I mean after Installing fan.
Might be same process or a little different but I've taken apart and put back together about 6 in last month or two.
Hope this helps
Les

 

[texaskirbyguy]

Les,
The fan has reverse threads so it has to be turned clockwise (when facing the front of the fan) to loosen it. The reason for reverse threading is to prevent loosening of the fan in normal operation.

 

[lesinutah]

Texas kirby guy

Touche. You are correct I remember just making sure to keep Armiture from moving.

 

[jpsbgt]

Thanks fellas for the tip !

 

[jpsbgt]

Thanks I succeeded in removing fan, unscrewed the fan bearing plate but couldn’t get the armature to move a bit ? Can anyone tell me what to do next ?

 

[bikerray]

Did you take out the carbon brushes?

Try wiggling the armature a little to break the seal of the old grease and pull the armature straight forward.

 

[jpsbgt]

Will do thanks

 

[jpsbgt]

I just removed the brushes and holders, still no movement of shaft ? I reinstalled the threaded piece on the end of the shaft above fan. Can you inset a ice pick into that to remove armature ? Going slow to not break something...thanks for all tips !

 

[dysonman1]

Put a screwdriver into the opening in the casting, the same opening in which you inserted the ice pic into the armature. Rest the screwdriver on the rear of the bearing plate, and tap with hammer. That will move the armature and bearing plate forward enough to remove from machine. This of course is AFTER you remove fan and bearing plate screws.

 

[lesinutah]

Hey

In side spray wd40 in the bottom of the motor housing. It will lubricate bearings. let it sit a minute or two spin the Armiture to get wd 40 spread. After spinning wear gloves it should come out. Make sure you leave field and field housing screws in.

 

[lesinutah]

Uh no

Don't I repeat don't hit shaft. This could strip out or warp the Armiture blades or worse. Don't hit the shaft. I did this on 510 effed up Armiture.

 

[texaskirbyguy]

I assume you cannot get the bearing plate off?
If so, go here to reply 2 and look at picture 7.
http://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?34158_27

Take a thin screwdriver and rest it on the bearing plate holes and tap it down with a hammer to hopefully break the plate free and rotate it.
If that fails, tap some very small screwdrivers into the gap between the bearing plate and the housing, in each of the four screw holes. Gently pry the plate up in each place.

 

[lesinutah]

Hey

He got bearing plate off Armiture is stuck in the bottom bearing. Again don't hammer.
Here is a question Armiture blades on 510 I used hammered move up and down I also bent Armiture fan I have straightened leveled fixing that but is there a fix for armiture blades moving up and down. I'm sure u can tackle weld put metal screw hold into place but any real solutions.
Thanks les

 

[texaskirbyguy]

Oh, I see - I had this happen once. I put the fan back on, held the housing between my legs, and with a slide hammer connected to the hole in the fan shaft gave a couple raps and it popped out. Just make sure both carbon brushes are removed first.
Funny part was that after all the crud was cleaned away, the new bearing went in with just a little finger pressure.

 

[lesinutah]

Hey

U shove a small device like ice Pic and lodge into hole so shaft won't move twist fan by hand clock wise keeping Pic in hole not moving.

 

[bikerray]

I think what Dysonman1 was saying was to put the bearing plate back on the armature, then screw the fan back on the shaft with the pulley ( just finger tight or enough to hold it in place ) then tap on the bearing plate from the underside.

If your fan is the gray plastic do NOT tap on it as it will probably crumble, that's why you would need the bearing plate under the fan.

Once the armature starts to come out you can take off the pulley, fan and bearing plate and then pull out the armature.