47 M.....belt tensioning

Mayor · Apr 1, 2009

Todays project on the M is too tighten the main drive belt and install a new generator belt.
My trouble here is....after loosening the bolt that hold the outter pulley in place....how do you get that section of pulley loose on the threads?
Years of not moving has it on there pretty tight....not much rust though....but I'm assuming that a previous owner has tried also because theres a tab that looks like it was put there too use a driver against, but its now pointed on the front?
I have had it soaking in pb blaster for about 2 weeks now.
Any good advice before I start?

glennster · Apr 1, 2009

they can be a devil to break loose. remove the retaining bolt completely,then i clean up the exposed threads with a small wire brush. keep applying the pb blaster. i use a brass rod to tap against the raised boss on the pulley to try and get it to move, try both ways. if that wont get it, apply some heat to the ring to expand it a little, if you have an acetylene torch that would be great, but a propane torch will work in a pinch. try and heat a few spots around the ring, then keep tapping. dont get too aggressive as the ring can break. heres a pic of my brass rod fan belt pulley knocker-looser tool. if you need to, cut the old belt off, and also clean the inner threads too. once loose, i use anti sieze in the threads.
<a href="http://s121.photobucket.com/albums/o234/glennster_01/?action=view&current=DCP02414.jpg" target="_blank">

DCP02414.jpg" border="0" alt="Photobucket

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Untitled URL Link

Janicholson · Apr 1, 2009

That belt should be pretty loose. Pushing in and out on it, midway between pulleys, it should move an inch an a quarter with firm pressure. This seems loose, but tighter in not needed, and will only wear out the WP bearings. It is an oversized under stressed part! JimN

47 M.....belt tensioning

Mayor

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glennster

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Janicholson

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