Can I replace just the turbo wastegate? (1987, OM603)
 

Hi,

I have a 1987 300D, 3.0L, 6-cylinder turbo. It has the "KKK" brand (not Garrett) turbo, model K24, with air recirc valve. The wastegate (boost overpressure valve) appears to be leaking internally. It looks like it's just fastened to the main turbo housing by 3 bolts. Can I just replace this part, and if so, where can I buy it? Otherwise the turbo works fine, I don't want to replace the whole thing...


Help!

gsxr:

Call a local diesel injection/turbocharger service and ask for advise.

I suspect the wastegate servo has to be calibrated, and it is unlikely you will get it right very quickly (I could be wrong!). I don't do turbochargers -- I will tackle anything mechanical I have tools for, but turbochargers and injection pumps need tools I niether have nor can afford.

Shouldn't be too expensive to have the wastegate servo replaced and calibrated it you take the turbo off and deliver/pick up.

Check the pressure hose on the servo, too -- they can fail, and cause trouble. That is, if it isn't internal -- I haven't looked at mine that closely!

Peter