Range Rover HSE (LP) V8-4.6L (1997)
Refrigerant Oil: Service and Repair
NOTE:
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Care must be taken when handling refrigeration system components.
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Check the oil trap for the amount of oil lost. All protective plugs on components must be left in place until immediately prior to connection. The
receiver/drier contains desiccant which absorbs moisture. It must be positively sealed at all times.
Refrigerant oil
Use the approved refrigerant lubricating oil: Sanden SP10, Nippon Denso ND-OIL 8 (Diesel).
CAUTION: Do not use any other type of refrigerant oil.
Refrigerant oil easily absorbs water and must not be stored for long periods. Do not pour unused oil back into the container.
When renewing system components, add the following quantities of refrigerant oil:
Condenser.......................................................................................................................................................................................40 cubic centimeter
Evaporator......................................................................................................................................................................................80 cubic centimeter
Pipe or hose....................................................................................................................................................................................20 cubic centimeter
Receiver/drier.................................................................................................................................................................................20 cubic centimeter
Total quantity of refrigerant oil in system:
Petrol .......................................................................................................................................................................................... 150 cubic centimeter
Diesel ......................................................................................................................................................................................... 140 cubic centimeter
To calculate the quantity of oil to be drained:
1. Remove sealing plugs from the OLD compressor.
2. Invert compressor and gravity drain oil into measuring cylinder. Rotating the compressor clutch plate will assist complete draining.
3. Note the quantity of oil drained (Y cubic centimeter).
4. Calculate the quantity (Q cubic centimeter) of oil to be drained from the NEW compressor using the following formula:
X Cubic Centimeter - (Y Cubic Centimeter + 20 Cubic Centimeter) = Q Cubic Centimeter.
Rapid Refrigerant Discharge
When the air conditioning system is involved in accident damage and the circuit is punctured, the refrigerant is discharged rapidly. The rapid discharge
of refrigerant will also result in the loss of most of the oil from the system. The compressor must be removed and all the remaining oil in the compressor
drained and refilled as follows:
1. Gravity drain all the oil, assist by rotating the clutch plate (not the pulley).
2. Refill the compressor with the following amount of new refrigerant oil:
100 cubic centimeter (Petrol), 90 cubic centimeter (Diesel)
3. Plug the inlet and outlet ports.