When you find bearing trash in the oil pan, it is reasonable to remove and inspect the vacuum pump and timing device face.

Diesel Injection Pump Timing Device threads
Diesel Injection Pump Timing Device threads




.

__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

Yea, i figured i would have heard something horrible if it had failed. I get a feeling that this is something that didnt just happen recently. The plastic bits look pretty worn around the corners.

__________________
1976 w115 300D

Three calls thus far today, from owners finding ball bearings during engine oil change.

1992 300D 2.5 vacuum pump "FAILURE" ball bearings fell into timing chain

Diesel Injection Pump Timing Device threads
Diesel Injection Pump Timing Device threads - PeachParts Mercedes ShopForum

.

__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/