Models Less Cycling Clutch

Compressor oil level need only be checked when there is evidence of major oil loss from the system as in the case of a broken hose or severely leaking fitting, defective compressor seal or collision damage to the system.

OIL CHARGE--COMPONENT REPLACEMENT
If there are no external signs of oil leakage from the A/C system, maintain the proper system oil charge by adding new refrigeration oil during component replacement as follows:
1. Discharge system as outlined, then measure amount of oil collected in discharge container. If more than 1/2 ounce of oil is collected when discharging system, an equal amount of new refrigeration oil must be added to the system.
2. Remove defective components. Drain and measure oil remaining in compressor or accumulator, if removed.
3. Add the proper amount of oil to each replacement component as follows:
a. If accumulator is being replaced, add the same amount of oil that was drained from the defective accumulator plus 1 additional ounce on 1980 models or 2 additional ounces on 1981---87 models.
b. If compressor is replaced, add the same amount of oil that was drained from defective compressor plus 1 additional ounce.
c. If condenser is replaced, add 1 ounce of oil to replacement condenser.
d. If evaporator is replaced, add 3 ounces of oil to replacement evaporator.
e. If receiver/drier is replaced, add 1 ounce of oil to replacement receiver/drier.

OIL LEVEL CHECK--LEAK CONDITION
If external oil leakage is evident, check compressor oil level using the following procedures.
1. Discharge system as outlined, then measure amount of oil collected in discharge container. If more than 1/2 ounce of oil is collected when discharging system, an equal amount of new refrigeration oil must be added to the system.
2. On models with A-6 axial compressor, proceed as follows:
a. Remove compressor and accumulator, drain oil from components into a suitable container and measure amount of oil recovered.
b. If 4 ounces of oil or more are recovered, add the same amount of new refrigeration oil to system.
c. If less than 4 ounces of oil are recovered, add 6 ounces of new refrigeration oil to system.
3. On models with R-4 radial compressor, proceed as follows:
a. Remove accumulator, drain oil remaining in accumulator into a suitable container and measure amount of oil recovered. The R-4 radial compressor does not have an oil sump, therefore it is unnecessary to drain this compressor to check system oil level.
b. If the amount of oil recovered is 2 ounces or more for 1980 models, or 3 ounces or more for 1981---87 models, add the same amount of new refrigeration oil to system.
c. If less than 2 ounces of oil are recovered on 1980 models, add 2 ounces of new refrigeration oil to system.
d. If less than 3 ounces of oil are recovered on 1981---87 models, add 3 ounces of new refrigeration oil to system.
4. On models with DA-6 axial compressors, proceed as follows:
a. Remove accumulator, drain oil into suitable container, then measure amount of oil recovered.
b. If amount of oil recovered is less than 3 ounces, add 3 ounces of new refrigeration oil to system.
c. If amount of oil recovered is more than 3 ounces, add the same amount of new refrigeration oil to system.
5. Add refrigeration oil, as needed, to compressor sump or accumulator, reinstall components, then evacuate and recharge system.