[GreenKeys] M33 Motor fan...

[Kenneth Gartland]

Hi

Note for Brad re: his seized motor fan...

I have seen this problem many times...

Most likely, the set screw was over torqued during assembly
and it resulted in a raised "Circular" indent in the motor shaft
where the set screw was positioned...

Two possible fixes...

Remove the set screw completely from fan hub, and fill
the hole with a good penetrant oil such as PB Blaster,
Liquid Wrench etc.

Let it soak in awhile and then holding the pinion end of
the motor shaft (Pinion removed) with the mounting screw
only in the end of the shaft, use this screw to hold the shaft
while trying to rotate the fan counter and counterclockwise
direction to see if it loosens up...

This usually works, if not, then brute force is required by using
a pair of wide flat blade screwdrivers, one opposite to the
other, and prying them together in a reverse direction to force
off the fan...A second pair of hands to hold the motor casing
while you do this is real handy!

In any case, when you get it off, the scored area on the
shaft where the set screw was positioned shud be sanded
down with ultra fine emery cloth, or a similar product
known as Crocus cloth...

When reassembling fan to shaft, place a thin smear of grease
to area inside fan hub before positioning & tightening set screw...

It will never cause you grief again!

Good luck!

Cheers!

Ken
VE3-HMQ
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