hopefully last question on oil gaskets - what the heck is this part?

so in going back i wanted to make sure that i put the o-ring in the proper spot.  before i attempt to button it up - now that i cut down a dozen 5/16 pieces of all thread to keep the trays in place - i need to be sure i do this correct.

in the first pic is the piece that was in the recessed hole above the oil tube next to the new oring.  the new o ring is much larger than the oil tube and does not fit in the recessed hole,.  i did not find any o ring when i pulled the pans, unless it is this one that has been pancaked.  

in the next pic you can see how the plug has a sort of "top hat" to fit in the recessed hole which leads me to think this isnt a crushed o ring?

the last pic shows the 2 items with the new o ring st atop the flanged out part of the piece that was in the block originally.  anyone have any idea what i am missing?
image

Comments

  • heres second pi tried to show original part from the side
  • jrenda
    jrenda Member
    edited August 2016
    tjhis is with the parts stacked on top o-ring of the original part that was in the block.  if i simply placed the new o ring over the oil tube this is the order it would go in (the top of the part would fit into the recessed hole with the o ring around the oil tube).  which seems odd to me.
  • Uncle Josh
    Uncle Josh Senior Contributor

    There is a chamfer in the block. (Angle if you will).  The O ring goes around the tube and squeezes tight in the chamfer.  The one that came out will be deformed, as it will get squeezed into the hole in the oil-tray pan.

    What in the world are you doing with all-thread.  Just fill the trays with oil and bolt her up from underneath, or add all the oil later through the fuel pump hole which will fill the trays and overflow into the sump..

     

  • thanks Josh - i know my questions are rookie but i would hate to have to redo this task again lol.  The o-ring that came with the kit is much larger than the fuel pump tube, so much so that i really cant see it squeezing into that chamfered edge correctly?  Again it's prob me making something from nothing, I just want to be sure i do this right.

    as for the all thread i had to use a few pieces to locate the top/bottom gaskets into the case so i could use a jack to lift the pan into place.  no way i was going to be able to hold the 2 pans plus align the gaskets and add 2 quarts of oil at the same time, and then add all 34 bolts.  i had a good portion of it all done last night but just didnt feel comfortable about the fit of that o ring.  too much work to just take a chance and "hope" i did it right.

    thanks for the insight,.
  • Ric West IN
    Ric West IN Senior Contributor
    Jason,    The "O"  rings in the early splasher oil pan sets was thicker , looked like it was cut from  a 
    modern fuel line,  This attached O ring is from a late 1950's oil pan set for the step down splasher 8.

    It fit snugly around the pick up tube.   Check dimensions courtesy of Harbor Freight's digital calipers.

    Good luck

    "Ric"
  • awesome Ric!  that is a huge help as the o ring I have def is not snug around the oil pick up tube.  I'll measure the one i have but i think i need to get the right one.  big help!!
  • It also just occurred to me that the dipper tray doesn't need to be "filled" to the top. It isn't that full when in operation anyway, so simply filling it to the top of the dipper troughs is sufficient. It's much easier to install with less oil in it if that's your preferred method.

    I once filled the tray/pan through the tappet chamber floor drains to the "Full" mark on the stick and found that it took a couple of quarts more than specified to do so . After initial running, it was showing 2 quarts. over full, roughly the amount it took to overfill the dipper tray.  Duh.

    F

  • thanks Frank.  I just spoke to 21st century hudson and they confirmed that it's a simple issue where the gasket manufacturer sometimes supplies larger o rings.  No big deal at all.  I'll hit the local hardware store with Ric's o ring dimensions and have at it.  I just wanted to be sure I wasn't missing something.

    Thank you to all for the help.  Hoping to have it buttoned up over the next couple days and have a try at firing her up!
  • Frankvintagefullflowcom
    Frankvintagefullflowcom Senior Contributor
    edited August 2016

    J,

    Just as a double-check, I have the O-ring dims as 1/2 X 11/16 (3/32" cross section).

    F

  • thats great Frank - just found em at lowes.  Many Thanks!
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