Not to come off as rude but is this even a repair? i see this more as something everyone with a laptop will know especially those that carry multiple with them to prolong work time. it feels a bit like "Screen black? press on button"
The rumble pack ( Circle silver bit on the bottom right ) is glued to the top of the backplate. Use a spudger to ply it from there as you could damage the cord connected to it if you pull it away with the backplate.