Voyager V6-3.0L VIN 3 (2000)
Refrigerant Oil: Service and Repair
SYSTEM OIL LEVEL
It is important to have the correct amount of oil in the A/C system to ensure proper lubrication of the compressor. Too little oil will result in
damage to the compressor. Too much oil will reduce the cooling capacity of the system and consequently result in higher discharge air
temperatures.
NOTE: The oil used in the compressor is ND8 PAG R134a refrigerant oil. Only refrigerant oil of the same type should be used to service the
system. Do not use any other oil. The oil container should be kept tightly capped until it is ready for use. Tightly cap afterwards to prevent
contamination from dirt and moisture. Refrigerant oil will quickly absorb any moisture it comes in contact with. Special effort must be used to
keep all R-134a system components moisture-free. Moisture in the oil is very difficult to remove and will cause a reliability problem with the
compressor.
It will not be necessary to check oil level in the compressor or to add oil unless there has been an oil loss. Oil loss at a leak point will be evident by
the presence of a wet, shiny surface around the leak.
Refrigerant Oil Level Check
When an air conditioning system is first assembled, all components (except the compressor) are refrigerant oil free. After the system has been
charged with R134a refrigerant and operated, the oil in the compressor is dispersed through the lines and components. The evaporator, condenser,
and filter- drier will retain a significant amount of oil, refer to the Refrigerant Oil Capacities chart. When a component is replaced, the specified
amount of refrigerant oil must be added. When the compressor is replaced, the amount of oil that is retained in the rest of the system must be
drained from the replacement compressor. When a line or component has ruptured and oil has escaped, the compressor should be removed and
drained. The filter-drier must be replaced along with the ruptured part. The oil capacity of the system, minus the amount of oil still in the
remaining components, can be measured and poured into the suction port of the compressor.
Example: On a dual system the front evaporator retains 60 ml (2 oz). The condenser retains 30 ml (1 oz) of oil, and system capacity may be 220
ml (7.40 oz) of oil.
220 ml minus 90 ml = 130 ml (4.40 oz).
Refrigerant Oil Capacities
CAUTION: The refrigerant oil used in a R-134a A/C system is unique. Use only oils which were designed to work with R-134a refrigerant. The
oil designated for this vehicle is ND8 PAG (polyalkalene glycol).
Servicing Refrigerant Oil Level
1. Using a refrigerant recovery machine, remove refrigerant from the A/C system.
2. Remove refrigerant lines from A/C compressor.
3. Remove compressor from vehicle.
NOTE: Refrigerant oil must be added when a accumulator, evaporator coil, or condenser are replaced. See the Refrigerant Oil Capacities
chart. When a compressor is replaced, the refrigerant oil must be drained from the old compressor and measured. Drain all of the refrigerant oil
from the new compressor, then fill the new compressor with the same amount of refrigerant oil that was drained out of the old compressor.
4. From suction port on top of compressor, drain refrigerant oil from compressor.
Refrigerant Oil Capacities
5. Add system capacity minus the capacity of components that have not been replaced through suction port on compressor. Refer to the
