speedometer drive gear removal

[Gunnar]

Hello,

Since a stuck speedometer cable caused the white plastic speedometer drive gear in the auto tranny to get ground up to bits i decided to replace it.

I removed the tranny mount, then i unscrewed the cable to the straight metal pipe bit that goes into the tranny.
Now i could see the gearshaft of the gear with the keyslot, so i removed the bolt that keeps a small locking tab in place against the housing.

That's where i got stuk, do i remove the housing now? And how?
I tried wigling it but it won't budge.