Bleeding Cooling Loop With a Vacuum Pump
 

Here is a VERY crude drawing but you guys get the picture. Has anyone ever used a hand vacuum pump (usually used for bleeding brakes) to bleed their cooling loop? If you have all your lines hooked up and at the fill port line attach the vacuum and pull vac on the system it work right? The drain line would have a valve at the end that's closed and once vac is pulled on the loop have the valve attached or submerged in the coolant then open it, it should fill air free, correct?

Re: Bleeding Cooling Loop With a Vacuum Pump
 

Only thing I can see as an issue is the water may go right through the rez and right to the hand pump bypassing the rest of the loop... Follow the path of least resistance theory..

Re: Bleeding Cooling Loop With a Vacuum Pump
 

If you have a good setup with your res or tline at the top there is no need for a vacuum. I've been sick of bleeding my cooling systems also so I see where this idea is coming from but like JD said it probably wouldn't work well (water going into the vacuum pump).

Re: Bleeding Cooling Loop With a Vacuum Pump
 

You could get the same results more easily with a little extra tubing & gravity. This assumes your loop's not installed on the ISS...

Re: Bleeding Cooling Loop With a Vacuum Pump
 

I see what you're saying. Just for the record too. The picture is not showing it, but the hand pump would be the highest point in the loop so everything else would be below it