DASH AIR FAN MOTOR MAINTENANCE

[mikelutestanski]

Hello:      MCI 4, 5, 6?, 7, 8,  And possibly 9   the 24V dash fan blower assembly needs cleaning.  The blower wheels are very dirty and probably off balance causing excess noise.   Anyone have any luck taking the blower wheels off the motor shaft.   i have made a mess of one.  The trick is...
    THe other one I just got to out of the housing and I am soaking the blower wheel still attached to the motor to clean it up.     
     Can anyone detail the procedure to separate the blower wheel from the motor?
     Regards   mike

[TomC]

Lots of liquid wrench.

[mikelutestanski]

UPDATE  UPDATE:
     I have a solution but it does not solve the problem of removing the wheels from the shafts.  I can remove the motor fan assembly from the scroll.  THen I cleaned the wheel and soaked it.  I blew out the motor and the scroll to remove the caked on dirt.  I have reassembled and installed one fan assembly.  There are 2 in the front fan box. 

    I used pb blaster and soaked the shaft for 30 minutes. The wheel  did move but getting it off is without destroying the blower wheel is difficult.
     My goal is to get the defrost blower noise as low as possible because I have to run the blower on high to get the most out of the front AC coil.  The window area up front is a huge heat generator.
    Regards  mike

[rdbishop]

Mike, Itook both of mine out because they were noisy. If you want me to I'll go see what I can find out about the take apart. You can also have them if you want them. When are you leaving on your trip?

Richard

[Boomer]

It's been a good number of years since I took one apart but if memory serves me they are just held on by an allen head set screw.  Penetrant helps of course.  Don't forget to replace or inspect the motor brushes and armature.

[buswarrior]

The length of time these parts have been assembled in a horrible place full of wild humidity swings...

Those parts may need to soak in the penetrating juice for a time measured in hours/overnight/days.

The power in penetrating oils hides in time.
Minutes aren't often long enough to get the results you read about on here.

Yup, more delays in getting simple things done, but then stuff doesn't require as much force to risk breaking/bending.

happy coaching!
buswarrior