• Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

oil pan rear seal ring

iluv83vettes

NAXJA Forum User
Location
Houston
I am in the process of redoing the RMS on my new (99) 4.0 xj. I noticed that there is a half ring type thing that went around the crankshaft part between the rear most two bolts.

When I did the same job on my old (89) 4.0 xj, it did not have this piece. When I was doing that RMS job, I had to get a new oil pan because I bent the lip on the one that came off. The new oil pan came off of a 2000 XJ from junk yard and that one did not have this piece either.

Is this part essential for sealing the oil pan back to the engine block? I didn't have any leaks when I finished my old RMS job (which I also used a new style one piece gasket. Also does anyone know which direction this piece goes back on? I wasn't really paying attention when I took it off.

Thanks in advance.
 
The half ring thing is the RMS, it around the crankshaft "rear main bearing journal" in 2 pieces.

1 piece is in the block part and the other with the flat legs goes in the bearing cap.

That seals the output of the engine into the tranny.

The oil pan is a seperate gasket that seals the bott of the engine and the rear portion wraps around just below the RMS area but is a different surface.

Hope that clarifys it for ya.
 
The part I am talking about is not the Rear Main Seal. The part I am talking about is almost like a strap with a triangle shaped piece of rubber that is on the outside part of the arc. It mounts on the outside of the oil pan. Sorry I didn't make it clear in my first post. I know what the RMS is and I have replaced a few of those and this is the first time I have seen the part I am talking about.
 
That's the part I am talking about.
 
Anyone? I know a lot of people have done the RMS. I would like to know how common it is for this part to be on there.
 
Back
Top