A/C System

When all 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, see below. 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 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).

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).

Front A/C
- Compressor 150 ml (5.0 oz)
- Filter-Drier 30 ml (1.0 oz)
- Condenser 30 ml (1.0 oz)
- Evaporator 60 ml (2.0 oz)

Dual A/C
- Compressor 220 ml (7.4 oz)
- Filter-Drier 30 ml (1.0 oz)
- Condenser 30 ml (1.0 oz)
- Evaporator 60 ml (2.0 oz)
- Rear Evap. 60 ml (2.0 oz)