A/C Refrigerant System Components, Replacing

- All repairs for A/C, heating and ventilation components that DO NOT affect the refrigerant system can be performed as described for R-12 equipped vehicles.
- Replacement A/C compressors, evaporators and condensers supplied by the Parts Dept. are filled with nitrogen. If gas does not escape when component is first opened, the component may be malfunctioning, do not install.
- Install new replacement accumulator immediately after opening to prevent moisture contamination of desiccant.
- Always plug open refrigerant line connections to prevent dirt and moisture contamination.
- Always replace restrictor whenever system is discharged due to a leaking component.
- Dispose of contaminated refrigerant (PAG) oil following laws governing hazardous waste disposal. Do not combine PAG oil with any other old oils such as engine oil or transmission fluid.

A/C refrigerant system components, replacing
If system is discharged as the result of a leaking component (except compressor):
- Remove A/C compressor.
- Remove malfunctioning component.
- Plug all open refrigerant line connections to prevent dirt and moisture contamination.
- Blow through component with compressed air and collect oil that runs out.
- Add same amount of new refrigerant (PAG) oil to new component plus amount listed below:
- Evaporator 20 cc ( 0.7 oz )
- Accumulator 30 cc ( 1.0 oz )
- Condenser 10 cc ( 0.3 oz )
- Refrigerant line/hose 10 cc ( 0.3 oz )

- Install new component.
- Remove compressor oil drain plug, drain refrigerant oil from compressor and measure amount.


NOTE:
- Rotate compressor by hand to speed up oil draining process.
- Dispose of used refrigerant oil following laws governing hazardous waste disposal.


CAUTION!
In order to ensure lubrication during initial start-up, add a minimum of 80 cc (2.7 oz) of fresh refrigerant (PAG) oil to A/C compressor.


- Refill compressor with 80 cc (2.7 oz) of fresh refrigerant oil.
- Install oil drain plug.
If total amount of refrigerant oil drained from old compressor was greater than 80 cc (2.7 oz):
- Subtract 80 cc (2.7 oz) (amount of new oil that was added to compressor) from total amount.
- Add resulting amount of fresh refrigerant oil to either evaporator or accumulator


Example:

100 cc (amount of oil drained from old compressor)
-80 cc (amount of fresh oil added to new compressor)
-----------------------------------------------------------------------
20 cc (amount of fresh oil to be added to evaporator or accumulator)


NOTE: Some refrigerant/recovery/recycling/recharging equipment has provisions for adding refrigerant (PAG) oil during system recharge. If using this method for adding oil, follow all refrigerant/recovery/recycling/recharging equipment manufacturer's instructions.


- Install A/C compressor.
- Evacuate and recharge A/C system.
- Manually rotate A/C compressor 10 rotations before operating system to prevent compressor damage.

If system is leaking as the result of a damaged or malfunctioning part (except compressor), but system is still charged:
- Discharge A/C system.
- Remove malfunctioning component and plug all open line connections.
- Blow through component with compressed air and collect oil that runs out.
- Add same amount of new refrigerant (PAG) oil to new component plus amount listed below:
- Evaporator 20 cc (0.7 oz)
- Accumulator 30 cc (1.0 oz)
- Condenser 10 cc (0.3 oz)
- Refrigerant line/hose 10 cc (0.3 oz)

- Install new component.
- Evacuate and recharge A/C system.