Hello, John Talley here with Boats.net, and welcome back to the next
video on our little Tracker 25. Today we're going to take a look at the input
shaft seals, as I fear they may be in trouble and they need to be replaced.
So let's look at the parts kit that I used to do this and then we'll dive into
it. So here it is, one part number gets you an entire seal kit. This gives you
all the different gaskets, O-rings, seals, everything that you're going to need to
seal up each individual section of this particular lower unit. The only special
tool you're going to need is to pick up one of these because you're gonna have
to have this to remove the prop shaft housing and then more importantly, put it
back in and torque it to 80 pounds. Now as far as any of the regular tools that
I'm going to be using, I'll call those out as I go along. So if you're ready, we
can knock this out. Let's go.
With our water pump out of the way, we actually need to go and pull the output
shaft and the bearing carrier for that. Because we actually have to get to that
pinion gear, get that nut off. Then we can bring out the input shaft, reach in, and
extract those seals. We had already done the prop shaft seals, so if you need to
replace yours, why don't you reference the playlist for
this particular outboard and I can walk you through it. So what we're after next
is there's a nut down on the bottom of that pinion gear. The Mercury guide says to
put this in a clamp and, you know, break it loose. I think what we're gonna do is
actually just use a pair of vise grips, grab it down low where this edge is for
the water pump, put a towel around it so I don't scar it up, and see if we can get
it pulled like that. And if that fails, then I'll take it out and put it on a stand.
But, 15 foot-pounds? I'm betting we can do it like this. Alright so it's 14
millimeter, and it's actually a bolt not a nut. Let's see if we can hold it still
and yep, pop it loose. There she goes. Need really small hands to do this. That's
gonna drop and ah, there she goes.
Let's reach in and grab that tapered bearing. There we go. Now with the pinion
gear off, we can bring out the input shaft. Their surfaces are looking good.
We'll clean that up just a little bit with a scotch brite pad, nothing too
intense. Let's see if we can just pop them out using a flat blade. When you're
doing this, make sure you don't go into the side of the housing and gouge it. You
do that, and then it's not gonna seal properly. Hey, I got put them in one shot!
That never happens. Now notice how they came out: they're back-to-back, and that's
the same way we're gonna put the new ones in.
When we put the seals in, I know there's supposed to be a specific height. We're
gonna run them all the way down so it'll have a chance to seal them back up,
because I don't want to have to replace that. Let me get this cleaned up
a little bit more and then we'll push the new seals in. So we've got to cleaned
out reasonably well. We're going to go ahead and put some Loctite
on each one of the seals and of course there's a special tool you can use to
drive these in. But I'm gonna use one that's really not intended for this
purpose but it's going to work just fine. This is actually a 18 millimeter impact
and I'm sure it can survive knocking in a couple of rubber seals. Remember these
go back-to-back so we're gonna drop the first one in, quote, upside down, and the
other one will go up next to it like this. Now what we're gonna do is get some
teflon grease and fill in the voids in between the two seals. That way they'll
have some lubrication for when the shaft goes back in. Next let's go ahead
and get our input shaft back in, put it in our bearing, get on the pinion gear,
and then that bolt. Alright, I was a little off it's actually 13 foot pounds.
All it takes. We had already done the prop shaft seals,
why don't you reference the playlist for this particular outboard and I can walk
you through it. Alright guys, the seals are installed. The
only thing I have to do now is put together the water pump. Well listen, if
you need these or any other parts for your machine, why don't you come see us at
Boats.net and we can get you taken care of. If you have any questions or
comments, leave them in the section below and I'll do my best to answer them. And
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next video. Y'all have a great day.