Hi, I'm Wade from Thoroughbred Diesel. Today we're going to be showing you the
Merchant Automotive rear main seal installer for the Duramax motors.
Today we're going to be installing a rear main seal on a Duramax engine and talking to you about
the importance of having a Merchant Automotive rear main seal installer. If you're doing this
one time, I still would suggest to purchase the seal installer. If you're going to keep the truck
for a long time, you may have to do another rear main seal. If you do an engine build, you've got
to as well. You guys that own shops that do a lot of Duramax builds and a lot of Duramax work,
you've got to have this tool in your toolbox. This tool is much cheaper than any of the other
alternatives that are out there, and it does just as good a job. It will sit
the depth of the seal and give you a perfect install every time. Machined aluminum piece,
anodized, it's really, really nice. Talk to you about some of the features of it before
we start with the install. The seal installer itself,
it's going to have a difference in sizing there on the top of it. I want to call it a recess,
but it's not really a recess. The outer side is going to be recessed. But the seal,
and this is a mile seal, rear main seal, the seal fits perfectly on the seal installer.
There's not a lot of movement in there. So the seal and the installer work together to have the
seal the perfect depth into your rear cover just for correct installation every time.
So we're going to go ahead and show you what we do on an install here on this. Now,
the dowel isn't really going to come into or be a hindrance to you on the install. This is actually
going to be part of the depth-setting for this. Now the front and rear main seal on the Duramax is
they're a little bit different than what you're used to working with. They don't have a seal
on the inside per se. This is actually a metal ring on the backside of it. The side that goes
towards the oil, there is a flat metal piece. It's all actually one assembly there. The seal
kind of moves independently of that. This flat metal portion, this actually
goes towards the engine. So we want to make sure that we wiped the crank off,
make sure it's clear of everything. Check to make sure you don't have anything else in your bore.
Wipe the cover down as well so you're going to be installing it on a clean surface.
So go ahead and start your rear main seal here into the cover. Get it as flat as you can. But
remember the crankshaft on a Duramax is stepped. So once the seal is on the next step of the crank,
you're actually working on the outer portion of the seal itself so be careful with that.
We'll take our seal installer. We're going to set it correctly onto the seal. Then go
ahead with a rubber mallet and drive it in. You'll hear a change in the sound. That's
when you know that you've got the seal the correct depth inside of the cover.
So that's been installing a rear main seal for a Duramax engine. If you have a question about this
process, if you have a question about any Merchant Automotive products, please give us a call.
As always, we appreciate you watching our videos, like and subscribe to our channel. You got any
questions, just hit us in the comments, and we'll get them answered for you. Thank you.