Lawrence,
from memory, remove oven from housing, remove sides, disconnect springs from hinges, remove and dismantle door to gain access to hinges,replace hinges and assemble in reverse. Hope that helps. 😀
Be careful, as once the springs are removed the door assembly is not secured and can just slide out of the oven frame freely. Unhook one side and then firmly hold on to the door and unhook the other. Nearly came a cropper a few years back with one of these……… 😯