Hi. Folks
the sleeve oring inside the pump is a normal donut oring or is a thick oring with metal ... i have a factory manual and the exploded view is not helping at all.
its says use a punch to push out the metal sleeve but it just says remove the oring.like a normal 1. I can see the oring but its glued and Hard as a rock. I cant see a groove to insert a screw driver.. as far im.looking at it seems like a metal oring like a seal..
please correct me if im wrong..i dont want to Hammer a vital part or scratch it

 

That hardened ring is just a standard rubber O-ring. It's baked on and fused in place. Don't hammer it. Use a pick to dig into the rubber and carefully pull it out of its groove.

 

I.cant Recognise the damn oring . I dont know is located cause everyrhing in there is black and dirty. Hours ago i confirmed is a normal oring.
but where the hell.is located. I cant see it. I thought i was seeing it but
is a inner tube oring .an outer oring over the sleeve or is a front oring.
The fsm says is located on a seat. But honestly i just want to know whats type is it.. a picture will help or a link to remove it wisely.