After the trans
, clutch and flywheel are out remove the 4( i think) pan bolts that go into the aluminum seal housing.
Take the bolts out that hold the housing on the motor and pry it off.
Drive the seal out the transmisson side of the housing paying attention to the way it was installed.
Clean the RTV off of the block and the housing.
With the trans
side of the housing up place the seal on it and press it in with your hands to get it started.
Take a board and place it across the seal and drive it in with a hammer.
Make sure its even with the housing and your done.
Use a small amount of RTV to seal the housing to the block.
Lube the seal with grease or oil and carefully work it over the end of the crank. You want to make sure you do not roll the seal as you put it on. Take a picture of the old seal still installed for reference.
Tighten the bolts back down and your done.
I dont remember the torgue specs so your on your own with those.