[schwarze-man]

Hi Matti,

Sorry to be slow responding. I will try to answer your points. First thing is that the German system is laid down in a fairly straightforward way but, the actual way that engine serviceability worked-out was more complicated. Also, I am not a German language specialist so, please forgive any mistakes!
The basis of my information is the interpretation of DB605 servicing for modern certification, using the original DB requirements.
Firstly, the overall servicing documentation was reasonably straightforward when the DB605 was first produced in 1941/42. The complicated engine had several levels of SERVICING documentation. Firstly, the D.(Luft) T. 3605 A-B, 0 u. 1 Handbuch covers the engine in moderate detail, including a servicing schedule. Here we find the engine has the 0 (zero) series and 1 (one) series. the 0 series are the early production that has a short servicing period. The 1 series is main production and has a servicing period about twice the 0 series.
Both series have the same daily, before flight and every 12.5 hour servicing.
Next, we find that the servicing at every 25 hours includes an oil change for the 0 series and a common, for both series, list of servicing items.
The schedule then introduces the concept of Teil-uberholung and Grund-uberholung (part-overhaul and full-overhaul) with the Grund-uberholung being nominal 100 hours for 0 series and 200 hours for 1 series. The Teil-uberholung being at half life and, the 1 series having an additional list of servicing at 50 hours ( where the 0 series has a Teil-uberholung).
Here, in the Handbuch, there are lists of work to be done, but the detail of the work is in a different document, the D.(Luft) T. 3605 A-B, 0 u. 1 Beiheft 1 Instandsetzungsvorscriften (Overhaul procedures).
I will continue in the next installment.

Cheers

SM