Freelander seized brakes and transmission fluid

Hello, im from norway and recently changed some oils(engine and automatic transmission oil) on a Freelander 1, 4td 2.0 diesel 2006.

I was wondering if someone knows the capacity to fill trans fluid to the right level, i found 4L in the internet and drained all from below(plug was right under car facing downwards). Filled it with 4L but unsure if i need to fill more..

And the brakes recently seized today(sound and high temp disks), could someone pls tell me what to look for? Also for the rear drumbrake type, if it is heavily rusted on the outside, what would be the chance to replace drum and pads for the rear axle?(ie get the drums and pads out of the rear wheels)

Thanks in advance

Your auto trans fluid is filled until it ‘spills’ from the check plug on the side of the gearbox.
You need to be on very flat level ground, and have warmed the gearbox to a temp range, then run the gearbox through the selectors for a couple of seconds… then open the check plug and allow any fluid to drain out - once it stops dripping it’s done. If none drips out, add until it does, then follow process again.

The rear drums have brake shoes in (not pads). The drum, shoes and cylinder can all be replaced. Note that shoes are trickier than pads. Photos of how the springs are all connected are a good idea, before you remove the old ones.