The local MB dealer parts guy helped me out on this one. It is best to replace the O' ring on the low pressure and the seal ring on the high pressure lines and the reservoir bottom "seal" alongwith the low pressure hose so that one does not have take it apart again if these go. In my case, I had leakage from the bottom of the reservoir as well as the flex hose...nice mess on the starter motor and on thegarage floor every night...

I have all the parts in this week and should tackle it this weekend. I got as far as draining the reservoir, taking the filter out. But then to get the reservoir off one will need an "external" torx driver amd my friend and I had to sew it back up as we did not have the right Torx contraption.

I found that at Sears. And to make it easier it would help no end to take the distributor cap off carefully and remove the upper portion of the fan shroud to get some more working room! Then get the dcap and the plug cables out of the way carefully! (do not have to remove the cables from the dcap). It looks like a few hours working at my slow pace.

Good luck to those that try this as it is tight in there!...and check that vaccum line that is routed below the distributor cap mine was broken and came apart as I touched it.

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Matt
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92 400E 128K
99 GMC YUKON 88K