Charging the System

Refer to the Data Table in the A/C System Specifications section for refrigerant and refrigerant oil capacities.

J-23500-01 CHARGING STATION METHOD

CAUTION:
Use of these procedures will prevent charging station from being accidentally exposed to high-side system pressure.

Use instructions provided with charging station with the following exceptions:
1. Do not connect high pressure line to A/C system.
2. Always keep high pressure valve closed on charging station.
3. Perform all evacuation and charging through low-side pressure service fitting.
4. After system recharge, start engine with compressor shut OFF then wait until idle speed has stabilized.

Fig. 3 A/C system charging, with C.C.O.T. system:

DISPOSABLE CAN OR REFRIGERANT DRUM METHOD.

If R-12 drum is used, place on scale and note total weight before charging. During charging, watch scale to determine amount of R-12 used. If 14 ounce R-12 cans are used, close tapping valve, then attach cans following instructions included with manifold adapter.

1. Start engine and allow to warm up (normal idle). Set A/C control to OFF.
2. With R-12 drum or cans inverted, open R-12 supply valve and allow approximately 1 lb. or 39 liquid oz. of R-12 to flow into system through low-side service fitting, see Image.
3. When 1 lb. or 39 liquid oz. of refrigerant has entered system, engage compressor by setting A/C mode to AUTO and blower switch to HI to draw in remainder of charge. Cooling the condenser with a large fan will speed up charging procedure by maintaining condenser temperature below charging cylinder temperature.
4. Close refrigerant supply valve and run engine for 30 seconds to clear lines and gauges.
5. With engine running, remove charging low-side hose adapter from accumulator service fitting. Unscrew rapidly to avoid excessive refrigerant loss.
6. Replace protective cap on accumulator fitting and turn engine OFF.
7. Check system for leaks.
8. After system recharge, start engine with compressor OFF.
9. Wait until idle speed has stabilized.
10. Switch compressor ON and let engine idle for a minimum of 2 minutes before increasing RPM to allow refrigerant and oil to circulate throughout system.
11. Check for proper system operation.