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Subject: Old Wood's PTO coupler "spider"

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JP    Posted 07-10-2019 at 11:02:03 [URL] [DELETE]        [Reply] [Email]  
  • Old Wood's PTO coupler "spider"
  • I'm trying to find a replacement "spider" for the 3 1/2" coupler which goes between my 9N PTO shaft and the Hydreco gear pump for my Sherman backhoe. The original spider was a reinforced fiber disc with 6 holes in it which fit the coupler teeth, teeth are 1/2" at the wide end. Only markings on the coupler are 3 1/2, Wood's, and B. Haven't found anything that matches yet. This mentions it in section K as Disc-Coupling 54B219 but doesn't show a picture
    http://www.ntractorclub.com/forums/manuals/messages/3852.html
    This is what I have
    https://www.mytractorforum.com/attachment.php?attachmentid=2385965&d=1562724139

    TheOldHokie    Posted 07-11-2019 at 09:45:59 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Old Wood's PTO coupler "spider"
  • My bet is that item is NLA from Woods or anybody else. If it were me I'd start looking for a replacement coupler rather than that disc. What is the geometry of the shaft on the pump?

    TOH

    JP    Posted 07-11-2019 at 16:04:03 [URL] [DELETE]        [Reply] [Email]  
  • Re: Old Wood's PTO coupler "spider"
  • It's a 1 inch splined shaft on the pump, but I think I'm going to try and make my own spider. I found a 5/8 inch thick chunk of steel reinforced rubber, seems plenty rugged, I think I can drill holes in it and then shape them to fit the teeth on the coupler halves.

    David D. Smith    Posted 07-10-2019 at 14:37:39 [URL] [DELETE]        [Reply] [Email]  
  • Re: Old Wood's PTO coupler "spider"
  • I have never seen a PTO coupler like that. I have seen them used as a stationary coupling between pumps etc. I would take it to a bearing center and see if they can match it.
    Dave <*)))><

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