Harman P-Series - Combustion Blower set screw stripped cannot get fan blade off for cleaning? #%&!!

Hello
This is a 12 y/o Harman P61 that I updated to a P61a-2 with the original combustion blower. I tried the PB Blaster and wire brushing but no luck this time?

 

Hello

Well, this is what I did.
I could get the 3 nuts on the motor out so I took out the saws all with the longest blade for the shaft. This was a wood/metal blade so not sure if it would work. The all metal blade was way too short!
It took a little longer but it worked!
1. Remove 3 nuts on blower
2. Cut shaft with sawzall
3. Wire brush area behind blower
4. Wire brush area behind fan blade
5. Clean both areas with Acetone
6. Spray paint stove where blower was with Stove Bright Satin Black
7. Spray paint behind double paddle fan blades with VHS flame proof Flat Black
8. Clean and paint piece that goes over blades with Acetone and VHS Flame Proof Flat Black
9. Prep new blades with Dry Moly Lube
10. Install new Gleason Avery 1.75 amp upgraded blower and new fan blades
See pics
Click pic to enlarge

 

Here are a few more pics

How does it look?

Click pics to Enlarge

 

Another homerun, Don.

 

Looks like someone else had a b***h of a time trying to remove the oem blade. I only broke a allen key in the process and grinded off the fan blade. Heat, PB blaster, etc...., nothing work to try to salvage parts. Had to destroy something to remove it to replace the failing motor. Good work Don!

 

What Don saw here is very common. When we have to remove one, we only spend a small amount of time trying to get them off, then resort to cutting the shaft off and replacing the motor. Lets face it, we are taking this apart usually to replace the motor anyways......might as well replace the impeller as well......another way to do this is to split the collet of the impeller with a Dremel, insert a screw driver, open it up, and remove it.

 

A dab of anti seize on the set screw threads ensures easy removal of the blade next time.

 

Done that, now time will tell!