X2 on the above. I have been trying to write like this; Fuel Supply/Lift Pump when there is more than one common name for things.
Also most of the Mercedes Diesels; so far; in the threads do not have Fuel Injection Systems classified as Common Rail Fuel Injection Systems (what supplies the high pressure for Injection is different on a Common Rail Fuel Injection System).

To add to the confusiong some Fuel Injection Pumps have the Fuel Supply/Lift Pump built inside of them. Examples are the VW Rabbit and the Standyne Fuel Fuel Injection Pumps used by Gm, Chevy, and For.

My Volvo Diesel has a Fue Injection Pump Similar to the VW Rabbit. It has a Vane type Fuel Supply/Lift Pump built into the Rear of it inside of the Pump Housing. There is no other Pump to bring the Fuel from the Fuel Tank.

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84 300D, 82 Volvo 244Gl Diesel