Cabriolet V6-2.8L (AFC) (1995)
Accumulator HVAC: Service and Repair
NOTE: Replace accumulator and restrictor whenever moisture or contamination (blockage) have entered refrigerant system.
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Discharge A/C system.
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Remove A/C compressor and plug all refrigerant line connections.
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Remove compressor oil drain plug, drain old refrigerant oil from compressor and measure amount.
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Rotate compressor by hand to speed up oil draining process.
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Dispose of used refrigerant oil following laws governing hazardous waste disposal.
CAUTION: To ensure lubrication during initial start-up, add at least 80 cc (2.7 oz) of fresh refrigerant (PAG) oil to A/C compressor.
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Refill compressor with 80 cc (2.7 oz) of fresh refrigerant oil.
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Install oil drain plug.
If total amount of refrigerant oil drained from old compressor was greater than 80 cc (2.7 oz):
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Subtract 80 cc (2.7 oz) (amount of new oil that was added to compressor) from total amount.
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Add resulting amount of fresh refrigerant oil to evaporator.
Example:
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100 cc (Amount of oil drained from old compressor)
-80 cc (Amount of fresh oil added to new compressor)
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20 cc (Amount of fresh oil to be added to evaporator or accumulator)
NOTE: Some refrigerant recovery/ recycling/ recharging equipment have 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.
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Replace restrictor. See: Expansion Block/Orifice Tube
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Install A/C compressor.
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Remove accumulator and plug all open line connections.
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Blow compressed air through component and collect oil that runs out.
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Add same amount of new refrigerant (PAG) oil to new accumulator plus 30 cc (1.0 fl oz).
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Install new accumulator.
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Evacuate and recharge A/C system.
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Manually rotate A/C compressor 10 rotations before operating system to prevent compressor damage.
NOTE:
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Install new accumulator immediately after opening to prevent moisture contamination of desiccant.
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Only use new O-rings specified for use with R-134a.
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O-ring and torque specifications also apply to threaded connections in the A/C lines.
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Make sure that A/C refrigerant lines are properly insulated from exhaust system heat.