8 3/4 Inner Axle Seal Installer Tool
This is the first attempt.
It places the leading edge of the seal 1.650" in from the outer edge of the backing plate.
I am not yet accounting for gasket between backing plate and axle housing end.
it fits in with little side movement.
it's 1/4" thick.
if this material can take some blows it might work, assuming I have the dimensions correct.
I'll back up the striking end with a block of wood to distribute the force.