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  1. #16
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
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    Quote Originally Posted by eskimo View Post
    that was me..I deleted what I said after I had a closer look at the picture...
    Geez, you blokes were messing with my head.
    peter

  2. #17
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
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    Quote Originally Posted by steran50 View Post
    Bollie7 when you say that there is a groove on the shaft that the plastic fan sits in, I suspect then that there will be retaining fingers on the plastic fan that are sitting in the groove. In saying that once you remove the metal collar the fan should should come off fairly easily (you may have to jiggle the fingers out of the groove). Can you use something like a small crows foot lever (I would use 2 of them) to get behind the metal collar to remove it ?.https://www.ebay.com.au/itm/4-Piece-...-/322599265338
    I had a better look at it this morning (with my up close glasses on) and once more I was wrong.
    It appears that there is not a groove in the shaft after all. I might try Barons suggestion re making a small puller first before I start cutting.

    peter

  3. #18
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

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    Hi Peter,

    I would rub the rust off the end of the shaft first !
    Best Regards:
    Baron J.

  4. #19
    Join Date
    Mar 2009
    Location
    Blue Mountains
    Posts
    195

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    Hi Peter,
    The fan is a thermoplastic so heating it up will make it expand more than the shaft and also make it less likely to break. Leave the lot in a hot location in the sun for a few hours should do. There appears to be recycling number on the fan which is not readable on the pictures, what does it say?
    Mm.

  5. #20
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
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    1,669

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    Quote Originally Posted by Metalman View Post
    Hi Peter,
    The fan is a thermoplastic so heating it up will make it expand more than the shaft and also make it less likely to break. Leave the lot in a hot location in the sun for a few hours should do. There appears to be recycling number on the fan which is not readable on the pictures, what does it say?
    Mm.
    Thanks for that advice. As its turned out I got the fan off this arvo. Pics in my next post.
    peter

  6. #21
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
    Posts
    1,669

    Default Tah Dah

    Well I got the fan off this arvo. With no damage as well. Thanks to BaronJ for your excellent suggestion re a puller. (and yes I did remove the rust first)

    I grabbed one of my old, heavily modified, home made pulling plates this arvo and modified it a bit more by drill and tapping four 6mm holes at the correct PCD in it.

    Then I used 4 round head screws with the edge of the head just hooked over the back edge of the steel retaining ring. It was a bit fiddly getting the screws in but got there eventually. (In hindsight I should have cut a screw driver slot in the end of the screws to make it easier to screw them in.)
    First attempt failed as the screws just splayed out until the head slipped off the retainer.

    fan puller 001.jpg
    I then was able to get a hose clamp around the outside of the screws to stop them splaying out.

    fan puller 002.jpg

    After that it was easy peasy. The retainer and the fan moved together until the retainer got past the end of the shaft. Then the retainer fell off leaving the fan behind.

    fan puller 003.jpg

    That came off very easily with a bit of a wriggle.

    fan off 01.jpg

    This motor is almost new. The bearings are absolute rubbish. Stamped "NSK - Poland" However I dont think the bearings have ever been anywhere near Poland. I can grab the outer race and wriggle it around from side to side. I've replaced bearings in machinery that had thousands of hours on them and they were in better condition than these things. Check out the dings in the shield.

    bearing.jpg

    So I'll try and get some better replacements this week. All good fun.
    Thanks to everyone who offered advice on this fan removal.

    peter

  7. #22
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

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    Hi Peter,

    I'm glad that you were successful in getting the fan off

    Now when you come to put it back on, put the ring back on the fan and use a tube to gently tap it back into place.

    With regard to the puller, I'm sorry, it never occurred to me to mention cutting a screw slot in the other end.
    And I like the trick with the hose clamp ! That could come in useful.
    Best Regards:
    Baron J.

  8. #23
    Join Date
    Aug 2008
    Location
    Charlestown NSW
    Age
    65
    Posts
    1,669

    Default

    I bought some new bearings today. $13.20 for two 6205ZZ. SKF made in japan.
    When I got home this arvo I pulled the original ones off, fitted the new ones and put it all back together. Fan went back on fine.
    Now when turning it by hand there is total silence. Beeuutiful.

    Good quality bearings are very underrated I think. In common sizes they are cheap as when you consider the technology involved in making them.
    peter

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