Tell me the tools/info to replace the front crankshaft seal on '94 3406E...

I'm sorry, I got this engine crossed up with a different engine from another thread. I thought I was answering that one and wondering where my answer went when they said they never got it. My bad... I apologize about that. I got in a hurry and didn't verify I was on the right thread.

CATs have the solid seal. You need the proper tool to change it out.

 

Yikes

 

This is the CAT tool you need to wind in the seal. It's the same for the front and rear seals. It winds it in to a predetermined depth. I borrowed one from a CAT dealer, they are expensive to buy. This is on a 3408 engine but it is the same tool for 3406/C15 as they use the same seal. Make sure you get the very latest seal as there are about three different types.
To get the old one out you have to drill some small holes in it and use a slide hammer, CAT make a special slide hammer.

 

That's the tool you use. You will also have to use a slide hammer to get the old one out, tricky to do without damaging the crankshaft.

 

Mr.oz, you must do all your own work. Thats awsome that you always post pictures of your projects.

 

I especially like how the gear shift in his pic is on the right hand side too.......
Blows my mind. Lol

 

Lol.....yeah, and also the fact of a guy still being able to make a living pushin a 3408!!!!......####ing awsome.

 

True very true!!

My favorite engine right there.
Ive always said if i ever win the lottery id become a hobby trucker . Id have a 3408E cat under the hood with air to air on it.
Just truck on sunny days just to listen to the the pipes..!! Love those 3408s.
Sweetest sounding engine of all time.

 

The more weight you put on these things the more the fuel consumption is up there with the latest engines, and you get the benefit of better reliability with the older engines.
Over here in Oz we are one stage behind you in emissions requirements on new trucks, we don't get your emissions until 2019 I think it is.
We can run older engines as long as they are proven to be roadworthy, a bit like Canada I think.