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Subject: Mystery 3-hole Whatsit

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K.LaRue-VA    Posted 07-31-2018 at 09:28:43 [URL] [DELETE]        [Reply] [Email]  
  • Mystery 3-hole Whatsit
  • After major engine work, the 3000 is mostly back together. Unless some other crisis comes up, I will be checking fasteners, fittings, filling fluids, and going for a ride next weekend.

    Reassembly would have gone much faster if I didn't have this uncontrollable phobia. Dirty, rusty parts just cannot be bolted to clean shiny parts (shudder). Left-over mystery parts are another phobia. The walls of my shop are decorated with an assortment of unnecessary guards, covers, shields, etc. that interfered with normal operation or maintenance of various tools and machinery. No problem with those, I know where they went, and what they were for. Unfortunately, I have not been able to identify this part:

    For scale, it's about 3" by 1.5" It was in one of my cans of parts that came off the 3000, but I'm not sure it really came off this tractor. I have not spotted it in any of my disassembly photos. Anybody know that this is?

    BlasterStumps    Posted 07-31-2018 at 22:33:44 [URL] [DELETE]        [Reply] [Email]  
  • Re: Mystery 3-hole Whatsit
  • For what it is worth, I have done (lots of) things just like that. Dad gum!

    mhb@ufe    Posted 07-31-2018 at 16:01:19 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • Looks like a pilot bearing retainer that is held in place with 2 of the flywheel bolts.

    Mark

    K.LaRue-VA    Posted 07-31-2018 at 23:31:12 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • Yep, hit the nail, Thanks! Once you provided the name, it was easy to find in the parts book (with the clutch parts). Seems like I should have remembered taking that out when I removed the flywheel. I'm baffled why they decided a retainer was necessary. Maybe this was an assembly plant issue, where some pilot bearings got knocked out and lost before the transmission was attached to the engine. Once the tranny pilot shaft goes into the pilot bearing, there is absolutely no way that bearing can go anywhere.

    Ultradog MN    Posted 08-01-2018 at 04:58:01 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • I sold the rear half of a 4400 with 6x4 tranny to a guy about a year ago. He bought it to replace the kaput torque converter transmission in a 4500 TLB.
    Torque converter trans doesn't have a clutch so doesnt have a pilot bearing. Doesn't need that part.
    He called me to see if I had a spare one of those.
    I couldn't find one.
    So he put the job on hold for 5 days till he could get a new one ordered in from the dealer. $30
    He worked on heavy equipment for the City of St Paul for 34 years and thought it was important to have it in there.

    Ultradog MN    Posted 07-31-2018 at 17:54:33 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • Mark nailed it.
    The 3 cyl pilot bearings are a relatively loose fit.
    I know you don't want to split your tractor again to put it in but I would do it if the tractor were mine.

    mhb@ufe    Posted 08-01-2018 at 08:01:44 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • My concern would be if he happened to move the transmission back and forth during assembly and the bearing fell out of place. If he is confident that didn't happen the only way it would come out of place now would be by separating the tractor. Peace of mind that it stayed in place would make me want to split the tractor and install it.

    Mark

    K.LaRue-VA    Posted 08-01-2018 at 14:44:34 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • Thanks, that describes where I am right now. I was worried about the very heavy engine, and tried to pre-align splined shafts with each clutch disc. I was very happy the extra effort actually paid off. The engine easily slid right into place.

    A worn out or missing pilot bearing will cause all sorts of problems. It can eventually destroy a transmission. I have not been able to find any case where a missing pilot bearing "retainer" has ever caused a problem. I have a very fertile imagination, and can't come up with anything. This engine has been turned by hand several times when installing the distributor, and setting valve clearance. The clutch pedal seems normal. I'm confident the bearing retainer can be a wall ornament for now.

    duey    Posted 07-31-2018 at 11:01:53 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Mystery 3-hole Whatsit
  • Drawbar pin retainer?!?!?! Not something my 2N had, though...

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