Impreza Brighton Coupe AWD F4-2.2L SOHC (1997)
Refrigerant Oil: Service and Repair
Lubrication
A: ADJUSTMENT
1. SYSTEM OIL STABILIZATION
1. Prior to opening the refrigerant system for repairs (except compressor seizure) the system must be stabilized for correct oil replenishment.
2. Follow these procedures:
1. Engine speed set to 1,500 rpm.
2. A/C "ON".
3. Air source to recirculate
4. Blower 4th or high speed position
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Make sure the air entering the evaporator is above 26.7 °C (80 °F).
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The discharge (high) side pressure must be above 588 kPa (6 kg/sq.cm, 85 psi).
5. Operate the A/C for 10 minutes.
2. SYSTEM DISCHARGE
Slowly, discharge the system starting with the high-pressure side until the pressure drops below 345 kPa (3.52 kg/sq.cm, 50 psi), then open
the low-pressure side.
B: REPLACEMENT
OIL REPLACEMENT
1. After stabilization and discharge, replace the component, adding the appropriate amount of oil (DH-PR) to the new component before installation.
2. If the compressor is replaced (after stabilization):
1. Drain and measure the oil from the original compressor.
2. Drain the oil from the replacement compressor and refill with the same amount that was drained from the original [20 ml (0.7 US fl oz, 0.7
Imp fl oz) minimum]. Always use DH-PR for the replacement oil.
