I think the tool you are looking for is this one....

Pelican Parts.com - Rail Pin Puller Guide with 6mm extractor pin, Applicable - Mercedes engine - M102, M110, M115, M116, M117, M130, OM601, OM602, OM603, OM615, OM616, OM617.

You might be able to borrow one from someone here or check out the tool rental program elsewhere on the forum.