Hi guys, Just keeping the trend going on this forum for the spring/summer season.

89 300e, I replaced the compressor, condenser, and have a receiver/dryer (new) on hand.

I want to "blow out the old lines to remove any old oil. From what I gather, I would disconnect the lines and pump compressed air along with some mineral oil until it comes out clean? Removing the lines is not an option at this point.

I will replace various O rings under the hood while im there.

My next step would be to add oil. Does anybody know how much specifically?

I read somewhere about depositing small amounts throughout the system. Is that true? If so, whats the procedure?

I want to fill my system with nitrogen once or twice to remove any moisture that remains, then charge with r12. I believe the spec is 2.2 lbs. can someone confirm?

Lastly, what kind of pressures should I be seeing on my gauges?

I have spent a small fortune on this a/c so far, furthermore, I havent had air in a car for years now... Id really like to do it right this time

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2

Anybody?

__________________
Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2

You may want to read through my evaporator thread on this page as it answers some of those questions.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

Which of your cars are you talking about?

I have been following your thread closely, My ac system is ready for charge at this point.


Larry, this is for my 89 300e.

__________________
Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2