well went through service manual and the omit that one
assume the hinge you mean is mounted in the cooker body not the door, then there is a screw in from the side that holds them. that means if you have 2 ovens side by side you would have to remove one of the oven cavities to get the one in the middle. The one on the outside should be accessible with the side off.
so depends on whicjh hinge has gone and if you need to change both and if its the inner one I think i would say dont even go there
Dave