Project 4: 8N Replacing PTO seal

Hello,
well, I have the parts for this before my parts arrived for the axle seals, so started this today. I thought this would be the easier one, but now not so sure.
The FO-4 states to remove the front snap ring. I guess it is front if looking from the inside of the housing to the outside, right? So this is a different style snap ring than I'm used to with those little holes to grab on to at the ends. Is there a special tool for this style or just pry with something pointy?
Then it says to remove bearing retainer from bearing and shaft. Does this just slide down the shaft, again, down the inside part of the shaft or must it be pressed/pounded out? Does the bearing stay on the shaft?
Then these is another snap ring that lets you get to the seal. And it says to press out the seal.

help in understanding the steps a bit better than the FO-4 would be appreciated.
First picture is from the inside view or backside, the part that is inside the housing. I can see the ends of the snap ring at about the 12 oclock position. Second picture is from the outside view - too bad the seal can't be removed from this end.

thanks much.

I went back at it, and with the the can opener hook part of my knife at the end that is actually out a bit from the grove, and with a screwdriver holding the other end from sliding, anchored with the shaft, I was able to lift up the end with my knife and then grab with the pliers.
Then I made a quick shelf by the wood pile put two 4x4's close together and then pounded the butt end and without too many pounds and not too hard either, the shaft went down.
Now I see the other spring clip.

But now it seems like I really have three seals butted against each other, all about the same size. The third new picture attached.

I guess that is why earlier I wondered why it could not be replaced from the outside.

I added two pictures of the new seal. From a post I found here from some time ago, it said if I have the new style seal, the white side goes out. it is part 83944079 and it has that skinny spring on the inside lip of the inner circumference of the seal.
So,
a. am I pressing everything out that I see now, from the outside toward the inside, in other words I start at the end I see as if looking at the tractor rear, right - as that is why I need to remove the clip/
b. what is in there now is about 7/8" but this new seal is only 5/8". do I also start from the outside end and push this new seal in - and push all the way down to or until it hits that second clip, that I presume I should put back in before pressing in the new seal, approaching all in reverse order. And, if this is correct, then the new seal will be further down the but end of the shaft as it is narrower - does this make sense too?

Bottom line is how do i pound out the old seal(s) and pound in the new?

thanks again for the time.

The last one I did, I removed both snap rings then drove the seal out from the side that is inside the tractor to the outside. Then cleaned everything up and drove the new seal in from the outside of the tractor side of the housing. Then I reinstalled the inner snap ring, but my new seal was thinner than yours so you might want to install the inner snap ring before you put the seal in so that you don’t drive it in too far. After seal and inner snap ring is in reinstall bearing and pto shaft, then second snap ring. The spring on the seal should go toward the oil or inside of tractor, it’s hard to tell, but it looks like the side of the seal you have facing up should be to the outside of the tractor. Be sure to put grease on the seal sealing surface where it contacts the pto shaft. Clean tractor housing, replace gasket and reinstall pto shaft and housing. There is a torque for the pto housing bolts, I think around 45, but look it up, because I’m not sure about torque. Good luck

I forgot to add, that I used a large socket to drive out the old seal and install the new one.

Thank you 67Chevrolet. I bought a large socket set to remove the rear axle nuts and used one of the sockets to drive out the front wheel bearing seals, so that should work fine for this too. Maybe I'll get a bearing driving set for my son for Christmas and borrow it occasionally.
Anyway, I will drive it out as you say and drive it in too then the opposite or from the outside. thanks for being specific about that. As I have been thinking still on this, since my one seal is thinner than what is in there now, I'm thinking I should only drive it in as far as the sleeve is up the shaft so it is level across, if that makes sense. I did measure how far the shaft sticks out, maybe I did not have to after I get the retainer housing back on but am wondering now, since I am driving the new seal in from the outside end, if it is possible to actually put the one clip ring in, then put the housing back on the shaft and then the inner clip so I know exactly how far to drive in the new seal - what do you think about that? thank you again for your time.

(quoted from post at 22:04:04 10/03/18) Thank you 67Chevrolet. I bought a large socket set to remove the rear axle nuts and used one of the sockets to drive out the front wheel bearing seals, so that should work fine for this too. Maybe I'll get a bearing driving set for my son for Christmas and borrow it occasionally.
Anyway, I will drive it out as you say and drive it in too then the opposite or from the outside. thanks for being specific about that. As I have been thinking still on this, since my one seal is thinner than what is in there now, I'm thinking I should only drive it in as far as the sleeve is up the shaft so it is level across, if that makes sense. I did measure how far the shaft sticks out, maybe I did not have to after I get the retainer housing back on but am wondering now, since I am driving the new seal in from the outside end, if it is possible to actually put the one clip ring in, then put the housing back on the shaft and then the inner clip so I know exactly how far to drive in the new seal - what do you think about that? thank you again for your time.

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ry to drive it where it doesn't ride in the groove made by old seal. Looking at your seal it has a rubber coating on the outside I had one of those and tore the rubber trying to install it. You might want to lube it before installing.