Water box on/off the cooler defective

Hey community, as you know my repair CD from the Volvo is gone I still haven’t found it I need a disassembly and installation instructions. The water box (black) is burst or torn, depending on how you see it (I wasn’t there). So rough I see what has to be done (automatic Volvo) but a guide to visual understanding is always good. Thanks to all experts and connoisseurs Stumpanski