Farmall H Transmission Fill Plug

DelMN · Sep 1, 2021

Could someone tell me what size the Farmall H Transmission Fill Plug is? I think it is 3/4 inch female plug if I recall correctly. I am not close to the tractor so I can't just go and look. Thanks

Mark-Mi · Sep 1, 2021

3/4 square

Goose · Sep 1, 2021

jal-SD · Sep 1, 2021

Yep 3/4 square headed bolt fits into the bung and gives you a great access to fill the housing with 140-90 gear oil. Used to keep a 2 1/2 inch long square headed bolt that took a 3/4 inch wrench in the tool box. It worked with either a pipe wrench or a vice grip to open the bung. We didn't have a 3/4 drive socket set.

caterpillar guy · Sep 2, 2021

Pipe threads and bolt threads don't play well together without leaking in the threads. Check plug on ours I would have to check size though thought it was about 1/2 pipe thread. 3/4 pipe sounds to big for the check plug by the clutch pedal.

Farmall H Transmission Fill Plug

DelMN

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Mark-Mi

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Goose

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jal-SD

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caterpillar guy

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