Quote:
Originally Posted by Jareb
Ok Govert...so you are saying that the pump bearings are indeed an issue with the 61X engines and are not isolated to the 60X? Then, with 312K miles on my 617; I'm living on borrowed time?
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The early 300Ds had the same plastic bearing cage issue but the OPs is an 85 so you would not expect his to have an issue unless some one swapped an older Vac Pump.
But, there is other issues that can ruin a Vacuum Pump:
New Vacuum Pump Ruined due to too much Timer/Intermediate Shaft End Play (the title from my notes).
http://www.peachparts.com/shopforum/showthread.php?t=258062&highlight=vacuum
Also speculation from another thread has that your Vacuum Pump has to work harder/more often if you have abnormal vacuum leaks wearing the Pump parts out sooner.