Quote:
Originally Posted by ps2cho
Some vacuum pumps use oil rather quickly. If its pulling a vacuum, then there is no way for it to be pushing oil from the pump into the system. Are you sure the pump didn't simply burn through the oil?
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Yeah, I'm pretty sure. I called Mastercool, who manufactured the pump, and the tech told me that the model I was using, which I got from Autozone, didn't have a valve that would prevent the oil from flowing into the system if the pump was turned off while the system had a vacuum, and the manifold gauges were still open. Yikes!
I never did this before and the instructions that came with the Harbor Freight manifold gauges didn't clearly explain what ON and Off meant on the handles. So, I mistakenly left turned the pump off after I pulled a vacuum and the system was still open.
I recall hearing a gurgling sound, and I saw the oil level going down in the sight glass, but I didn't realize what was happening until it was too late.
Replacing that compressor on this 107 was a real PITA, because it required removing the radiator, the fan, the PS pump, the PS bracket, the crankshaft position sensor. Plus two of the Allen head bolts were so tight that they stripped.
I imagine that taking the compressor out won't be as hard the second time around. But, if there's some way to avoid that, I'd like to know what it is.
So, assuming that I did suck vacuum pump oil into the system, what would be the downside of running it and taking my chances?
Bill