9-3 Convertible (9400) L4-2.0L Turbo (B205) (2000)
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Refrigerant Oil: Service and Repair
Filling and adjusting compressor oil
The A/C system is filled with 150 ml of compressor oil for the A/C pump (petroleum) and 295 ml for A/C pump (diesel). A certain amount of
compressor oil is always lost in when draining refrigerant and when changing components. This amount must be topped up again so that the system
operation will not be adversely affected.
Filling of compressor oil should be done on the compressor high-pressure side. The compressor oil is supplied in tubes of 20 ml. The tables below
indicate how much compressor oil that is lost in conjunction with various types of service work on the A/C system.
A/C pump, petroleum
Reason for loss of oil
Amount of oil lost
Draining of refrigerant
15 ml
Ruptured A/C hose
30 ml
Replacing hose
15 ml
Replacing condenser
30 ml
Replacing evaporator
30 ml
Replacing receiver
30 ml
Replacing expansion valve
15 ml
Replacing compressor*
50 ml*
* Note that the new compressor contains 150 ml of oil when delivered. In order to avoid getting too much oil in the A/C system, and thereby reducing
cooling performance, the oil must be drained before the compressor is fitted. How much needs to be drained depends on how much oil that has been lost
in conjunction with any eventual other component replacements. The A/C system must always contain 150 ml of compressor oil.
If only the compressor is to be replaced, 85 ml of oil should be drained from the new compressor (150 - 50 - 15 = 85). If the receiver is also replaced,
only 55 ml should be drained from the compressor, according to the following calculation:
150 ml
(in new compressor)
- 15 ml
(lost when draining)
- 30 ml
(lost when replacing receiver)
- 50 ml
(lost when replacing compressor)
55 ml
(drained from the new compressor)
A/C pump, diesel
Reason for loss of oil
Amount of oil lost
Draining of refrigerant
30 ml
Ruptured A/C hose
60 ml
Replacing hose
30 ml
Replacing condenser
60 ml
Replacing evaporator
60 ml
Replacing receiver
60 ml
Replacing expansion valve
30 ml
Replacing compressor*
100 ml*
* Note that the new compressor contains 295 ml of oil when delivered. In order to avoid getting too much oil in the A/C system, and thereby reducing
