What is the "retainer" it mentions

Installing new seal and bearing on rear axle of Cat 416c. I definitely do not want to miss anything. What is the seal retainer it mentions?

I ordered a new seal and bearing which I just put on. Am I missing something?

I looked through the parts breakdown on this axle and the only "retainer" I can see relating to the axle shaft in what look like a snap ring, circled in red in picture below.
I do notice that each of the pictures on the assembly page posted has the disclaimer "Typical Example" so might be some versions had a retainer in that area and yours does not?

Not sure if it would apply, but I have seen boxes for wheel seals marked wheel seal retainer. I am assuming they sometimes class the metal part of the seal as the retainer that supports the rubber seal itself.

the retainer was part of the seal group in earlier machines

Thanks! Just wanted to be sure.

Glad mark was able to find a definite answer! Guess I was a little right in noting the "typical example" note in the instructions. I have noticed other times when Cat can fail to update instructions to take in up dates in the design of a component.

Reminds me of a project from decades back, a D397 with a pony motor. While disassembling the transmission for the pony instructions said to gear assembly out the back of the housing. Problem was the hole in the housing was maybe 6 inch diameter and the gear was about 7 inch diameter! Needless to say hardened steel gear and cast iron housing were not going to allow that to happen!