Compressor
^ If A/C compressor is replaced new due to external compressor damage:- discharge A/C system
- remove A/C compressor and plug all open line connections
- 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.
- remove oil drain plug from new compressor
Note
Replacement A/C compressors supplied by the Parts Department are filled with 250 cc +/- 20 cc (8.5 fl oz +/- 0.7 fl oz) of refrigerant oil. This is the total system oil capacity.
- drain fresh oil from new compressor and save (keep oil in an enclosed container to prevent moisture and dirt contamination)
CAUTION
In order to ensure lubrication during initial start-up, add minimum of 80 cc (2.7 oz) of fresh refrigerant (PAG) oil to A/C compressor.
- refill new 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)
- install new A/C compressor
- evacuate and recharge A/C system
- manually rotate A/C compressor 10 rotations before operating system to prevent compressor damage
^ If A/C compressor is replaced new as the result of leakage or internal damage (for example noises or no output),
- discharge A/C refrigerant system
- remove A/C compressor
If A/C compressor has internal damage,
- check refrigerant lines and hoses for contamination (metal chips); if present, replace lines/hoses as necessary, accumulator and restrictor
Note
If lines/hoses are replaced, measure and add appropriate amount of PAG oil before installing. If accumulator is replaced, measure and add appropriate amount of PAG oil before installing
- 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.
- remove oil drain plug from new compressor
Note
Replacement A/C compressors supplied by the Parts Department are filled with 250 cc +/- 20 cc (8.5 fl oz +/- 0.7 fl oz) of refrigerant oil. This is The total system oil capacity.
- drain fresh oil from new compressor and save (keep oil in an enclosed container to prevent moisture and dirt contamination)
CAUTION
In order to ensure lubrication during initial start-up add a minimum of 80 cc (2.7oz) of fresh refrigerant (PAG) oil to A/C compressor.
- refill new 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)
= equals =
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 new A/C compressor
- evacuate and recharge A/C system
- manually rotate A/C compressor 10 rotations before operating system to prevent compressor damage