Greetings,
I'm in the process of swapping a new engine into my 1990 300D and have discovered why my original engine has died. The oil pump sprocket has no teeth! It has been rounded completely smooth. The engine had 298K miles.

Has this happened to anyone else?

Does anyone know what the part number is for oil pump sprocket?

What were the engine oil pressure readings prior to the engine dieing on you?

__________________
BigBen

'98 E300 Turbodiesel 244 000km
RIP '92 300D 2,5 Turbo 632 859,4km due to engine failure

I bought the car non-running. I got it started and the gauge showed 0 oil pressure. The engine ran on 3-4 cylinders had large amounts of blow by. When I pulled the oil cap off it looked like a locomotive, HAHAHAHA!

I guess the repairs for this car were a little more involved than a fuel filter change.

You win some, you lose some.

Went to the dealership today and here's the info...

Oil pump sprocket
603 181 0112 = 22.50

Greetings,
Just a follow up...
Here is a picture of the worn sprocket. 282K miles.

Attached Thumbnails

 

__________________
James
Jet Engine Design Engineer with a car problem
(I just wish it was curable!)

1990 300D 294K miles
1987 Vette 101K miles (4+3)
2003 HD Electra Glide 65K miles
1992 Ford F150 300 I6
2000 Suzuki TL1000R Human Missle Machine!

Nice. I bet the pump picked up something and locked up.