Author Topic: Tips on resealing 6.9 hydraulic pump  (Read 1570 times)


  • W116 Addict
  • ****
  • Posts: 1,425
  • Chrome Bundts & bundts with white walls are a sin!
  • Location: knoxville, tn
Re: Tips on resealing 6.9 hydraulic pump
« Reply #15 on: 16 May 2021, 06:59 PM »
I wish I'd seen this sooner......I have a whole box of these.  :/ 
1966 250se coupe`, black/dark green leather
1970 600 midnight blue/parchment leather
1971 300sel 6.3, papyrus white/dark red leather
1971 280sel Black/black leather
1973 300sel 4.5, silver blue metallic/blue leather
1976 280s astral silver/blue MB Tex


  • Classic
  • **
  • Posts: 128
  • W116 Enthusiast
  • Location: Portland, Oregon
Re: Tips on resealing 6.9 hydraulic pump
« Reply #16 on: 15 June 2021, 02:19 PM »
Sorry to reply to my own thread, but thought I'd put closure on this thread.  SPOB sent a beautifully rebuilt pump to replace the --- and I still can't believe this --- porous original pump.  Wasn't just a problem with my housing leaking through a crack that isn't visible.  When the car is all the way down, the old pump would take a couple minutes to get the car to rise.

Now it's a few seconds.  Martin says my old pump wasn't getting to specified pressure.