Syclone V6-262 4.3L Turbo (1991)
accompanying figure).
a. If J 23500-01 is not being used, discharge the system by slowly connecting a gage hose to the low side service fitting on the accumulator and
discharge into a bottle (Refer to accompanying figure).
b. As the hose is SLOWLY tightened down onto the schrader valve, Refrigerant-12 will discharge from the system into the container. If no
discharge occurs, check for missing or defective schrader depressor in the hose fitting.
3. With the low side of the system discharged, check the high side system fitting (on the liquid line or muffler) for remaining pressure.
4. If pressure is found, attempt to discharge the high side using the same procedure as used for the low side. (This condition indicates a restriction on
the high side. Diagnose and correct before evacuating and charging).
5. After discharging, (no vapor escaping with the hose fully tightened down), measure and record the amount. If 0.014 kg (0.5 oz.) or more, add this
amount of new 525 viscosity refrigerant oil plus any quantity in removed parts before evacuation and charging with Refrigerant-12 (refer to
"Refrigerant Oil Distribution" for the quantity of oil normally retained in removed parts).
6. If adding oil is necessary, remove the suction hose at the accumulator outlet pipe connection and pour the correct quantity of refrigerant oil into the
hose or pipe and then reconnect hose or pipe. (Refer to step number 4 and "Refrigerant Oil Distribution" for specific quantity instructions).
