So, here's my first question:

The previous owner of my W140 300SEL recently replaced central locking vacuum pump.

Now it is damaged again. It showed up, that the pump itself was filled with oil, which had overloaded the pump, causing the rotor of the pump mechanism to break.

Tracing the vacuum distribution, i appears that the oil comes via the vaccum distributor block from two valves in the left of the engine room. One valve has black/green line coming from A/T (upshift delay switchover valve), and the other valve has black/red line coming from A/T. The oil comes from the black/red line.

I assume that the oil is transmission fluid, which is leaking through the vacuum actuator connected to the black/red line.

But I can not see in the diagrams, what this actuator is doing, and how I can access it for replacement.

Any help?

PS: I will wait to replace the vacuum pump until the leak has been cured and the vacuum system cleaned.