FYI - on OM617 engines, the trap is after the turbo. So a plugged, or failed, trap can't damage it. On OM603 engines, the trap was before the turbo, and if chunks broke off the trap they would enter the turbo and destroy the impeller blades. My '87 300D got a new turbo when the trap was replaced back in 1994 or so by the PO, before it was removed a few years later. But the turbo replacement won't apply to 123's...
