Block drain plug removal

Discussion in 'General IH Tech' started by Hutch, Apr 25, 2006.


  1. Hutch

    Hutch Farmall Cub

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    This is the last thing to do before I pull the engine.
    I am trying to drain the coolant from the block and I cant get the drain plugs out. I have hit them with penetrating oil and let soak and tried again a few times now. The plugs are square head 3/8". Is there a 3/8 female to 3/8 female adapter or socket of some sort that would work?
    Thanks
     
  2. WRENCH MAN

    WRENCH MAN Dreams of Cub Cadets

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    They do make 8 point sockets for square headed pipe plugs, tap on them with a hammer to help losen them, don't break the block ;)
    Some moderate heat may also be requiered, spray them with penetrating oil while they are hot.
     
  3. Erik VanRenselaar

    Erik VanRenselaar Y-Block King

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    I had to drill one out on my 304. Had to drill and tap the hole one size larger, as the corrosion (that froze the old plug in) destroyed the original threads. I used a brass replacement plug.
     
  4. Hutch

    Hutch Farmall Cub

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    Thanks Guys,
    I'll give it some heat and a bit more grunt tonight. So close now....
     
  5. jeff campbell

    jeff campbell Lives in an IH Dealership

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    won't a 3/8" drive extension fit in the plug?jeff
     
  6. Hutch

    Hutch Farmall Cub

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    Yes, an extension fits perfectly on the plug, but then how would one turn said extension? Once on the plug, it has the male end of the extension needing to go to the rachet. Maybe just a 3/8 open ended wrench to the male end of the extension? I'll try it all, and see what happens. Might even have the engine pulled tonight!
     
  7. 1977ScoutII

    1977ScoutII High Wheeler

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    Tap on them with a Hammer while applying torque to them. Tap not beat. LFH
     
  8. John Donnelly

    John Donnelly Administrator Staff Member Administrator Moderator

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    In other words, you have square-headed pipe plugs.

    WRENCH MAN's suggestion is what you should do.

    If you ever get into tractors, 8 point sockets will become your best friend.

    FWIW, the new plug kit that comes from Michigan bearing will use allen head plugs instead of the old pipe plugs.

    -John
     
  9. Hutch

    Hutch Farmall Cub

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    8 point socket, I'm on it! Heck John, it will be my new best friend right now! We actually have a place in town called Rusty Tractor Antiques, which has an awesome collection of old IH tractors. Up until last year they would always be in the 4th of July parade (the 4th is HUGE in Lander) I am hoping they will be in it again this year so I can get some shots for the board, maybe even some video of tractor burnouts! Thanks for the info and advice.
    Ryan
     
  10. John Donnelly

    John Donnelly Administrator Staff Member Administrator Moderator

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    Ryan,

    Don't thank me, thank WRENCH MAN, he suggested it first. :)

    I just was trying to drive it home that you needed that tool ;)

    -John
     
  11. willy

    willy Binder Driver

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    Ryan,

    Get a full set of 8 points so I will know where to borrow.

    If you want to use a *little* heat I have an electric heat gun, works wonders for me and less likely to burn down the shop.

    Heat....P-Blaster, tap, tap, tap, (sound of a brass hammer) 8 point, twist it out.

    rinse and repeat ;)

    Willy

    Did you get the cherry picker moved?
     
  12. Hutch

    Hutch Farmall Cub

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    Borrowed an 8 point 3/8 socket from the shop at work (Willy - that's the source for now, I'm trying to save some $$ for the inevitable little things when I put the "new" engine in.) The cherry picker is at my place, easy to get out of the truck, but it took Steve M. and I to heft it into the bed, so when I bring it back I could use a hand. I hope to get the engine out tonight, clean out the engine bay a bit, and then in the evenings this weekend maybe drag your engine over and do the install after the fly fishing seminar. With any luck, I could be up and running next week sometime.

    Wrenchman, thanks for the info on the 8 point socket, John thanks for stressing the importance of the right tool. OK, out to the shop ...
     
  13. Dan Phariss

    Dan Phariss High Wheeler

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    I use a 3/8 extension putting a 12" Crescent wrench on the square end. Socket may bit grip enough of the plug.
    This said I have had to retap one since the pipe taps are tapered I used the same size and just screwed it in farther IIRC, its been 5 years or so.
    Dan
     
  14. Hutch

    Hutch Farmall Cub

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    Victory!

    Well it's out! 3/8 8 sided socket did the trick - on the passengers side, no luck on the Drivers side, so I just drilled out the center of the plug to drain the coolant. I'll pull the plug later. Once that was done, it was cake, using a 12 ton enginge hoist, then dropping the front end so the engine would clear everything on the way out. Thanks for all the help everyone.
     

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    Last edited: Apr 26, 2006
  15. willy

    willy Binder Driver

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    Ryan,
    Next time that cherry picker moves it should be on my tilt bed trailer, makes my back hurt just thinking about lifting it into a truck.
    Give me a shot at removing that plug.
    Then we can go fishing!

    Willy
     

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