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testing used brake boosters 200 1986

posted by  darmstrong on  Thu Jan 27 16:44 CST 2005
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last visit: Sat Sep 13 12:21 CST 2014
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Number 9 is on Highway 9, just west of the 400 (it runs west into Orangeville).

$50 including the MC isn't bad if you want the MC, but I wonder how good an MC exposed to air for an unknown period is anyway. I got him down to $35 because it didn't have the check valve, and I didn't want the MC, but I got both anyway.

I tested vacuum by pulling the check valve, and tee-ing a connection between it and the booster off to my vacuum gauge. The results in the cold this morning were not obvious. All 3 units (the current one, the one I pulled off my "parts" car, and the one from the wrecker) seemed to build vacuum about the same. The one from the wreckers however didn't seem to lose it as fas when the plunger was depressed, so I installed that one tonight. I'm hoping tomorrow morning is cold, so I can get a meaningful test of if its better.

For all the hassle, in hindsight, I should have just installed the replacement without testing and hoped for the best. Being methodical is sometimes counter-productive. If the new one's fine though, I'll probably justify all my efforts by convincing myself that my tests pointed me to the right unit.
--
David Armstrong - '86 240(350k km?), '93 940T(270k km), '89 240(parts source for others) near






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