Refrigerant Oil: Service and Repair

Oil in the A/C system

Special tools:

951 1204 REMOVAL TOOL 951 1204 Removal Tool

Addition of lubricating oil

Warning! Oils should not be mixed. Always use the correct type of compressor oil.

Note! Too much lubricating oil will impair cooling. Too little lubricating oil will damage the compressor.

When repairing leaks, or when a component is replaced, lubricating oil must be added. The amount of oil for each component depends on whether the leak happened slowly or quickly.

Slow leak (more than 24 hours)
There is not normally a great risk of oil loss with a slow leak.
The following procedures apply when replacing the components:

Fast leak (hose burst for example)
A fast leak often means that lubricating oil is drawn out with the coolant.




Compressor

Preparatory stage for oil change
- Measure the volume of oil drained from the compressor
- Replace the drained oil volume according to the table below:






Caution! When installing a completely new system:Check that there is oil in the compressor. The other components should contain no oil.

Replacing the receiver

Replace the receiver in the following case:
- When replacing the compressor (compressor breakdown for example).
- For coolant leaks in which nearly 100% has leaked out of the system. (System not under pressure).
- When replacing an A/C component after the warranty period.

Filling the A/C system with oil

Note! Fill with oil before vacuum pumping.

Filling with PAG oil
When replacing pipes or hoses the oil can be filled through the service valve.
When filling with PAG oil (part number 8708581-7) in the vehicle, do the following:
- Remove the needle valve in the service valve using valve tool 951 1204 REMOVAL TOOL 951 1204 Removal Tool




Use the filler sprayer (without plastic hose) which is supplied with the station. The sprayer may need to be cleaned so that different oils are not mixed.
- Check according to the table above and measure how much oil should be filled. After filling with oil, re-install the needle valve.

Note! Use only your thumb and index finger when tightening the service valve using valve needle tool 951 1204 REMOVAL TOOL 951 1204 Removal Tool. This is to prevent damage to the seal on the valve.