E52 Power Steering Pump Leak Issue

Unfortunately, there is a common issue with the power steering pump on the earlier E52 models.  It seems that the pump can leak power steering fluid due to issues with the sealing of the pump itself. In Japan some people have replaced the pump with a newer type model, but also a few outlets in Japan supply replacement o-rings to repair the pump yourself.

Although this issue doesn't affect my Elgrand, it seems to be common enough to write about and hopefully help our my fellow E52 drivers. The older and newer style pumps are pictured below and I believe that the new one should not have the leak issue


If you do have the leak and can source the o-rings (we have some on eBay here) then there is a handy video on youtube showing a Japanese mechanic taking a pump apart to replace them.



When you remove the pump from your car often the body of the pump which is the yellow plastic and silver aluminium parts, are oily from the leaking EPSF.  You will need to remove the four bolts and then you can lever apart the three parts.  Between each section is an o-ring which can be replaced and should resolve the leak!

Links:

Japanese driver who replaced pump - https://re-autoguard.co.jp/mechanic/?p=5628

Youtube video - https://youtu.be/44QuAJtDYIk


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