Bump for a great thread.
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I wonder if you were to remove some of the components on the side of the unit, like the resistor and one other square looking thing with four screws, if that would allow just enough access to stick a vacuum hose in there? I think someone just did this recently and had a decent amount of success.
Wow! Not long at all, my ac guy said he'd have to take all the dash a part? Mine's a right hand drive, but looks like the mirror version of the left. Hmmmm.
Some pics of the manifold gauge set hookup and the Robinair vacuum.
Your gauge set looks similar to mine. Do you have the vacuum pump connected to the same line that you connect the R134a can to? The instructions for my gauges do not describe how to connect a vacuum pump, only that you connect a refrigerant can to the yellow line. I've never evacuated a system myself before, so I'm trying to figure out how to plumb the lines.
Thanks,
Chris
Great write up. I'm curious as to why you used nitrogen when you were going to replace the drier and vacuum the system anyway. Also, you were successful in finding your leaks, but sometimes you need more psi to find leaks, say at least 100 psi. Those pesky schrader valves can seal at 40psi, but leak at 100. Good job! AC work is easy.
Yes, after you're done evacuating the system, close the valves (obviously), remove the vacuum pump from the end of the yellow hose, then plug in the 12 oz can of R134a. Next, puncture the can, bleed the air out of the yellow line by cracking the fitting at the manifold gauge a little bit. My gauge set has a schrader valve that is used to bleed the yellow line of any air but you can crack the fittings and achieve the same thing.
HTH.
alia176: I have a couple of small questions. Any pointers on getting the drain hose hooked back up properly? Seems like it is a blind procedure when putting the box back in? Is there a nipple that sticks out into the engine bay for the drain? Could you pop the drain line off from the engine bay side before removing the box?? Also, if the foam is damaged or deteriorated, what might be a good replacement, some generic AC/window foam strips from Lowes?