Quote:
Originally Posted by Diesel911
I am saying what does not happen based the experience of others. On the Piston Type Vacuum Pump the parts fall into a chamber that at the end of which is a Disc Valve. In actual practice the parts stay inside of the chamber and cause no issues; again that I have read about. So far that is the fact.
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It may be a "fact" that you have not read about something, but that doesn't necessarily form a good basis for drawing conclusions. I can tell you that, when my check valve came apart, the shrapnel would sometimes block the vacuum pump inlet and I would loose essentially all vacuum. The brake booster would stop working and I had to shut the engine down manually. Then I would hit a pothole and the vacuum (and brake boost) would return to normal. And then the process would repeat until I diagnosed the problem and removed the shrapnel.
You might also note that the title of the discussion that I linked earlier was "Intermittent Vacuum Problems." (It is also worth noting that, in that discussion, you agreed with my recommendation to remove the shrapnel.)
Bottom line: if the possibility of sudden and unexpected loss of brake boost is not a problem for you, go ahead and take the easy road and leave the shrapnel behind.