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a/c compressor leaking at line connections

I am having trouble with the A/C compressor on my 1984 300D.
It appears that there were several hose-block connections and compressor connection configurations.
I ordered a new compressor (for a different car). It came with the adapters and instructions. Unfortunelty, I'm having trouble understanding them.
I can't get the compressor to stop leaking at the hose connections in the rear.

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1985 300d diagnosing transmission leaks ??

I have developed a transmission leak, originally i thought it was the pan gasket so i replaced the filter and put on a new gasket. that didnt work it is still leaking. i think it is comming from where the dipstick tube goes into the transmission, or maybe the transmission cooler line, i have tightened the cooler line and it still seems to be leaking. if anyone has any sugestions i would be most greatfull.

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85 300CD no charge to battery

I'm not getting charging to the battery. I have replaced the voltage regulator on the alternator (the old regulator brushes where about worn out), but did not get any change in the charge to the battery. At idle, voltage to battery shows 11.9v and dropping. When rpm increased, voltage will increase to 12.35v max, than right down below 12v when back to idle. What am I missing?

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