Quote:
Originally Posted by cn90
I replaced the AC compressor on my 1998 E39 528i with 160K back in July 2016. It is an M52 engine, so it is very similar to M54 engine.
I wrote a very detailed DIY here:
DIY: 1998 BMW 528i 160K Replacing AC Compressor
https://www.bimmerfest.com/threads/d...ressor.924320/
Key things:
1. Do NOT trust the amount of oil that comes with it.
Drain it and measure proper amount of oil yourself.
2. E39 AC compressor is Denso.
E53 X5 is Calsonic.
I'd stick to whatever brand the came from the factory.
Avoid aftermarket AC compressor.
3. Do it on a dry non-humid day.
4. If you rent the vacuum machine, check all the O-rings.
They are often damaged by the previous renters.
5. Replace all O-rings. Use only BMW Genuine O-rings.
6. Dryer...up to you.
7. Valves...up to you. |
Thanks for the reply, I had come across your DIY post and it seems ot be the best one around.
Once question I had, how did you come to the conclusion to add 5 oz of oil? One of the articles you linked recommended measuring the oil from the old compressor and using that amount to the new one.
From my understanding, even with compressor replacement, some oil is left in the system.
Also, since I am getting it refilled by a shop, can they add oil when they recharge?