VE pump accelerator shaft O ring size - page 1 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• VE pump accelerator shaft O ring size by regcheeseman on 15 Nov, 2010 03:11
• I've searched here, I've googled, I've downloaded manuals and part's suppliers catalogues, I've numerous part numbers....
  
  Bosch 9 461 610 414
  Zexen 146600-0100
  DTP 40-1100
  
  But all i want is the dimensions of the o-ring on the throttle shaft - I had a bag but the number on the bag doesn't help either.
• #1 by Luckypabst on 15 Nov, 2010 08:22
• 6mm x 11mm
  
  
  Durr... 6mm x 10mm
• #2 by regcheeseman on 16 Nov, 2010 15:46
• Quote

  6mm x 11mm

  
  Yep - I found that via google as well. not sure its right? That would mean a 2.5mm cross section.
• #3 by Luckypabst on 16 Nov, 2010 18:35
• It's correct.
• #4 by rabbitman on 16 Nov, 2010 19:22
• Quote from: Luckypabst on 15 Nov, 2010 08:22

  6mm x 11mm
  

  
  Is that supposed to mean the inner measurement is 6mm and the outer 11mm? That sounds about right to me.
• #5 by Luckypabst on 16 Nov, 2010 20:08
• Yes. The question came up before and that's the size of the O-ring in the Bosch kit.
• #6 by regcheeseman on 18 Nov, 2010 01:54
• Thank you very much 
• #7 by regcheeseman on 15 Nov, 2011 06:02
• Ok - I bought a bag of 200 seals (minimum quantity)
  
  They are WAY bigger than what comes out of the pump, the 6 mm bit is fine but the x-section (2.5mm) is massive.
  Try and fit one and it's a huge battle, and normally they tear or nick on the way in and leak even worse.
  
  So, has anyone actually got 6 x 11 x 2.5 orings that they are using successfully and if so, how do you get them in?
  
  Just had a thought- I've not actually measured mine, maybe they are not what is written on the bag...
• #8 by mtrans on 15 Nov, 2011 12:40
• I try hidraulic as well and no problemo.(in a harry)
  
• #9 by Luckypabst on 15 Nov, 2011 17:22
• My stuff is just a little too packed away to 3x check at the moment, maybe I'll dig it out tomorrow if I have a few minutes.
  
  Did you also replace the bushing? I tried a new seal on an old bushing back when I was chasing leaks with no luck because the bushing takes a nasty egg-shaped wear pattern. And if you did replace the bushing, does it have a generous taper on the underside to accept the O-ring as you insert the shaft? (Bosch brand should be OK, but Chinese parts could be questionable).
  
  Chris
  
  For reference:
  
• #10 by mtrans on 16 Nov, 2011 01:12
• In this part we don`t know there is made, Chinese can write any on box and because Bosch in Germany don`t made pumps I don`t belive they made O ring or seal.
• #11 by regcheeseman on 16 Nov, 2011 04:14
• I've tried several different pumps all with original worn bushes.
  
  It's not a case that they leak once fitted, more that they are so tight that the throttle shaft needs to be pressed in with a clamp, and once fitted is very stiff
  
  I measured several used ones and they were all slightly over 6mm I/D with a sub 2mm cross section - typically 1.8 - 1.9 mm allowing for some deformation in use would be around the 2mm.
  
  I've not noticed much lead in taper on any of the bushes, four on the bench last night - all the same.
• #12 by 92EcoDiesel Jetta on 16 Nov, 2011 08:14
• New throttle bushings are available. Go to any Bosch fuel injection shop with your pump p/n and they can order you a new one. If you do that, please post the p/n of your pump, the bushing and how much you pay.
• #13 by Luckypabst on 16 Nov, 2011 09:51
• Damn Damn Damn! (As Florida Evans would say).
  
  I f'd up for sure. The bushing bore is 10mm. Being such an old thread, I'll not attempt to conjecture what I was thinking.
  
  I went out and picked through the leftovers from a few Bosch kits and I have that O-ring, so to make things right, I'll happily send it off to you, if you can manage a week or so downtime. PM your address if interested.
  
  Chris
• #14 by 92EcoDiesel Jetta on 16 Nov, 2011 11:27
• A Bosch fuel injection shop told me a new o-ring will not stop the leak if the bushing is worn.