Who here has reseal a ZF Power Steering Pump? - PeachParts Mercedes-Benz Forum

Scott98 · #1 03-08-2009, 10:27 AM

Quote:

Originally Posted by LNGfish

Well mine sprays about an OZ a month so. I may think of rebuilding it to reduce the oil under the hood behind the light. It is a ZF pump.

I have the kit to rebuilt it that I got from Fastlane. He sent me what I need to reseal it. Shaft mechanical seal and a couple of O-ring I believe.

I have been told they are a bear to rebuild if you don't get the vanes back to where they did not come from.

It they are a bear to rebuild and a possible cluster ****, then I will take it to my mechanic who knows MB's and has done some work for me before. I have no special tools to boot. I think you need a special tool just to get the pulley off.

Just curiuos if you all have done this and how hard it can be or should I just pay somebody to do it, if I take it to him.

Any feedback would be appreciated.

Thanks!

Here's an article I did on replacing the rear seal on my ZF pump:

http://www.peachparts.com/Wikka/OM616PSPumpSeal

Scott

LNGfish · #2 03-08-2009, 10:52 AM

Scott,

Great pictures and write up! I learned allot from the pictures. Would you suggest doing the rear O-ring if it is not leaking or letting it go? That belt adjusting bolt was hidden now I see how it works!

Seems like the shaft Mechanical seal is not hard to do, just use impact wrench to get nut off, and a large wheel puller. Neither of them I have but I can get it done at local shop I believe.

Once the pulley is off does the mechanical seal just pop out?

If I'm doing the mechanical seal only I don't have to break open the pump right?

Now I'm wondering if I need to do the big rear O-ring eventhough it is not what is leaking. Any ideas?

Much appreciated