Repair kit for a broken wiper motor, that's new on me, only repair kit I know of is the plastic hose part of which I've used a few times on clients cars.
What usually happens is the jet holes get blocked & after a while it starts to cause internal issues & leak inside the boot lid.
If you intend to take it of, get a wiper puller as it is stuck in place like shxt to a stick, trust me its well on there if not touched for years.