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856 Differential Drain Plug...


highcotton
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... won’t come out- period. Tractor in for T/A and clutch and plans were to refill with Hy-Tran when done (owner has been running yellow bucket oil). How much heat can that housing stand? So far I’ve just tried the impact and a breaker bar with a pipe, no dice. Suggestions both welcome and appreciated. 

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Heat won't be too much unless you melt it completely. I have found that a sharp smack with a hammer squarely on the drain plug can help also

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10 hours ago, snoshoe said:

Heat plug not housing very hot. Let cool 5 min then try.

I had one on a 1086 I did this to. Heated it then went in and ate dinner. I could have turned it out with pliers went I came back. It worked great!

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11 hours ago, snoshoe said:

Heat plug not housing very hot. Let cool 5 min then try.

This works EVERY time that I do it.  The oil in the transmission does not hinder the heating process.  This also works great on those stubborn coolant drain plugs in the block of the 400 series engines. 

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