[Farmall] Transmission Oil Change - Wrench Question

[L W Schnell]

You can use a 1/2" to 3/4" adaptor along with your 1/2" ratchet or 
breaker bar.

Tim Savelle wrote:
> I need to change the transmission/differential in the 1949 "H" I recently
> purchased.  The filler plug is a large barrel bung-looking plug, but the
> wrench access is inset into the plug rather than protruding out....which
> means I can't use a wrench on it.  The square hole is 3/4".  I don't have a
> socket or pull handle that size.  Anybody got a suggestion before I go out
> and buy an expensive tool for this?
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