I also posted this over on benzworld so sorry if you see it in both places.

I finally got enough time to replace the timing chain on the used 190D I picked up back in March, well everything was going well until the temp link between the new and old chain went over the Injection pump gear and some how the chain jumped off the injection pump sprocket.

Well to shorten the story I ended up finally getting the new chain fished all the way through the engine but the injection pump timing is off by about ~25°. It is currently around 10° BTDC instead of 15°ATDC.

Any tips on the best way to get the pump timing back where it needs to be, hopefully without removing the injection pump?

Thanks,
Chadd