Posted by Don-Wi on October 05, 2014 at 19:04:33 from (75.205.49.6):
Dad's been having some issues with the vacuum pump not maintaining enough suction lately, and so he had a service guy come out. He messed around with it for a little while, tore the pump apart and cleaned the vanes, blah blah blah... (and he took the liberty of rolling off the brand new drive belts Dad just installed shortly before without loosening the motor....)
Still didn't pull enough after that so Dad brought out the pump I rebuilt 2 1/2 years ago (I stamped on the end that it was rebuilt 3/30/2012) and the guy said it wouldn't work because it didn't have some seals on the ends like the other (much newer) pump did. So instead of putting that one on, he tore the pump apart AGAIN and still no better performance.
Today I went out there and Dad wanted me to look at it. I spent a couple hours putting on my pump I rebuilt but it still didn't change the performance much. But that's when I heard the vacuum leak from under the tank. Started it up again, got on my back and felt underneath the tank, and sure enough when I found and covered a hole with my hand the gauge shot up to 15-16 bar of suction. I put the weighted regulator back on (dip stick pulled that off and plugged the hole for that as well...) and as a temporary fix bought a tube of silicone caulk, cut up a plastic jug and patched over the hole. Once I did that, Dad had to adjust the regulator down because there was too much vacuum.
Dad hasn't gotten the bill yet from the other service guy, but he was there for 7 HOURS and there was no improvement in the performance. Gonna be a phone call when it does come....
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