Given that they a; broke the casing, b; put gear oil in it, and c; siliconed all the seals instead of replacing them, I am considering this gearbox fubar. Thats a somewhat disappointing escalation from 'refurbished', but thats D2 life I guess.
I tore it apart to see what parts had been replaced and / or damaged to see if there is anything usable inside.
This is the crack from the outside - siliconed then painted over:
89Forever - yes you are spot on with how to deal with the contamination, but given the gearbox is now a parts donor, welding it becomes unnecessary.
This silicone was bugging me since I first got the car. Little did I know what crimes it was hiding
The sump magnets are missing. Not a happy sight in here, but no friction material so the clutch discs are probably still good. I don't know yet if they were replaced or not.
The valve body appears in good order and un-bodged, although obviously contaminated. I will keep this safe and possibly try fitting a Transgo valve to see what effect it has.
Front diff and drive flanges removed
Torsen housing. They'd had this off since some of the bolts were loose.
The drive from the planetary gears goes through the middle piece here which is hollow, and drives the Torsen diff. Drive then comes back from the torsen in to the gear on the middle piece then is sent to the front diff through the two on the right. The big chunk on the left is part of the parking pawl. You can just seen the toothed gear with which the pawl engages the front diff only. I never realised P only affected the front wheels. The rears can still turn through the Torsen.
Back of the main casing
Impromptu gearbox stand so I could pull the clutch packs
It's had the updated thrust bearing fitted
Apprentice marks on the clutch drum, which has also been replaced
More marks underneath on the second clutch pack.
I'm glad I pulled this apart since I can use the new clutch drum and bearing in something else, once the burrs and tool marks are cleaned up. I'll get the other clutch pack out tomorrow and see what state that's in.