Operation CHARM: Car repair manuals for everyone.
Home >> Dodge and Ram >> 1990 >> Shadow L4-135 2.2L SOHC >> Repair and Diagnosis >> Heating and Air Conditioning >> Service and Repair >> Refrigerant System Charge >> A/C System Charge
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A/C System Charge

CAUTION: Review Safety Precautions and Warnings before charging the refrigerant system.

After the refrigerant system has been tested for leaks and evacuated, a refrigerant charge can be injected into the refrigerant system. To charge the refrigerant system,
1. Connect a suitable charging station or manifold gauge set to the service ports.
2. Open the suction and discharge valves. Open the charge valve to allow the heated refrigerant to flow into the system. When the transfer of refrigerant has stopped, close the suction and discharge valve.
3. If all of the refrigerant charge did not transfer from the dispensing device, start the engine and hold idle at 1600 rpm. Set the A/C control to A/C, low blower, and open windows. If the A/C compressor does not engage, test the compressor clutch control circuit and correct any failure.
4. Open the suction valve to allow the remaining refrigerant to transfer to the system.
5. Close all valves and test the A/C system overall performance.
6. Disconnect the charging station or manifold gauge set and install the service port caps.
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