Oh yeah, I recall this bugger. There is some kind of cam or plunger or
spring-loaded dingus that you have to pry up in order to separate them. I
recommend you look closely at the diagrams in the Bentley manual and
familiarize yourself with the functional concepts so you can recognize
this gizmo and deal with it appropriately. Sorry, I don't remember it
accurately enough to describe it further, as I don't want to risk
misleading you. But I figured it out that way. You also need to know this
for reassembly, as you have probably guessed. Good luck.
Phil Bates had this to say:
>My 3-synchro overdrive gearbox is pretty much disfunctional. I took it
>out to overhaul it. The OD is fine, it is the gearbox portion that is
>bad (layshaft, laygear, and some others). Anyhow, I am trying to
>separate the gearbox section from the intermediate housing and OD so
>that I can dismantle it. It is loose, but something holds them together
>when pulled to about 1 inch apart. Anyone have knowlege of what I
>didn't get removed or loosened, I can't seem to see where the issue is.
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.