[gustavhorna]

Hi

can't remove the blower wheel from shaft on an Innovair minisplit. The wheel and the shaft seem to have joined like with a superglue, damn... The set ring is aluminum, the shaft is steel (and rusty).

Tried wd40 to no avail, also tried heating the set ring with a soldering iron set to 400C, no way.

The problem here is: the blower wheel has sort of ribbon ring where the set ring sits on (so it is flexible when you try to remove it). No mater how hard I pull it just bends this ribbon ring...

Any ideas? I serviced this unit 2 years ago and that wheel came off with no issues - had probably to add some Noalox or grease onto the shaft :/ Now it sits like glued.

 

[takoateli]

Can you clean the shaft between the motor and the wheel with sand paper, then tap the wheel onto the spot you cleaned, then clean the rest of the shaft and slide it off?

Could you get a puller on it?

 

[gustavhorna]

Can you clean the shaft between the motor and the wheel with sand paper, then tap the wheel onto the spot you cleaned, then clean the rest of the shaft and slide it off?

Could you get a puller on it?

I don't think you know how a blower wheel on a mini split looks like?

 

[gustavhorna]

your only access is a screw-driver sized hole

https://postimg.cc/NLsZ9d2B

 

[pecmsg]

I don't think you know how a blower wheel on a mini split looks like?

We all know what they look like.
A lot of labor and it can be done.

A little care on the replacement prevents that situation!

 

[R600a]

On a mini split you are probably going to have to replace the motor and wheel. I clean them in place to avoid that hassle.

 

[gustavhorna]

We all know what they look like.
A lot of labor and it can be done.

A little care on the replacement prevents that situation!

so what kind of puller would you suggest to fit that space

 

[gustavhorna]

so what I will do: remove the indoor unit, cut the shaft between the blower wheel and the motor, then tap it out, then weld the shaft back together...

 

[pecmsg]

so what kind of puller would you suggest to fit that space

so what I will do: remove the indoor unit, cut the shaft between the blower wheel and the motor, then tap it out, then weld the shaft back together...

Whatever it takes!

 

[gustavhorna]

Whatever it takes!

it does not take any pullers!

 

[ramboskie]

Use kroil oil on it

 

[gustavhorna]

closer look: it might be not Aluminum but Zamak3.... when steel and Z3 come together they will chemically bond, harder than a weld. Oil won't help!

Who is inventing such sh*t ?!

 

[takoateli]

I don't think you know how a blower wheel on a mini split looks like?

Oh sorry about that I missed that it's a mini split.

 

[takoateli]

Can you put plastic behind it and down into a bucket like a bib and clean it in place?

 

[R600a]

Can you put plastic behind it and down into a bucket like a bib and clean it in place?

That's what I do.

 

[gustavhorna]

I feel the desire to use my chain saw on that unit

 

[joemach]

Use kroil oil on it

That stuff is awesome.

 

[R600a]

Another product that is amazing for rust busting is sea foam deep creep.
I usually use aerokroil because of the good smell but when I need something a bit stronger I use deep creep.

 

[Mr Bill]

I make my own solution, I mix 50% acetone with 50% transmission fluid, let it soak on the part for a few minutes, it’s never failed me, “yet”.

Sent from my iPhone using Tapatalk Pro

 

[gustavhorna]

finally got this mess off.... removed the unit, disassembled the coil, so I could remove the motor together with the blower wheel, then hold the shaft with pliers while prying with big ass screw driver, then it came off.... all this mess because there is just no access to pry it off when the coil is in, and because the end of the wheel is rubber soft... Annoying. Wasn't even sitting that hard, however no way with this soft end when the wheel is in.