[Farmall] "H" oil filter questions - photos below

[Kurt Musgrave]

Tim, the groove the gasket belongs in is below where you have the gasket
sitting in the picture.  I think you will find that the old gasket is still
it there, and it will be rock hard and will come out in little bitty chips.
You'll need a tiny screwdriver or something, I have a pointed Craftsman awl
that works perfect.  After you get the old gasket out the new one will fit
very tight in the groove and likely you'll need a blunt object to push it
down into the groove especially the last bit of it.