If you have coolant leaks, fix the leaks. They are not connected with the A/C.
If your A/C is not cooling, ensure that your heater is off. If you cannot turn the heater off (ACC issues?) check the temperature of the refrigerant from the compressor to the condensor, it should be hot. If so, check the refrigerant coming from the evaporator, it should get COLD.
If not, problems with A/C

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Tony from West Oz.
Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine.
Josephine '82 300D 390kkm White/Palamino int.
Elizabeth '81 280E, sporting a '79 300D engine.
Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior


Various parts cars including 280E, 230C & 300D in various states of disassembly.