Passenger side door lock help please

Nice picture, where's it from?
I still have to do mine (it's on the passenger side so I keep forgetting)
A

 

No idea I'm afraid. Looks like official vw stuff. Somebody sent it to me when I had the same issue.

 

It looks like an addendum page from a service manual, they were yellow.

 

The slotted bit that wears out is crossed by the line from the letter A to the spring. I will try and find a lock and take a picture.