W201

1985 190D 2.2: where is the fuel prefilter?

I'm perhaps exposing my ignorance, but where is the fuel prefilter on my engine? The picture included with the filter kit doesn't help me, as I can't locate just where that refers to. I suppose it's possible that the prefilter was removed at some time.
Since I plan to replace the gunked-up filter in the tank, I'd like to have a good prefilter in place to catch whatever I stir up in the process.
- Richard

Chassis Model Number

W201

Forums

Diesel Engine Specific Aid

87 190E 2.3 Engine 102.985 Replacement pump does not match

I have purchased a replacement water pump and when in the process of installing I noticed the pump has what looks like an extra hose fitting in the 6 oclock position. The hose fitting size I.D. looks to be about 10mm. The original pump does not have this hose fitting.

I reviewed several parts sites concerning this year, model and engine and they all show pictures with this hose fitting in the 6 oclock position. I have pictures to show if necessary.

Do I have the correct water pump?

What is the fitting for?

I thank you in advance for your help.

Bryan

Chassis Model Number

W201

Forums

Gas Engine Specific Aid

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