t
| Use only O-rings that are resistant to refrigerant R134a and related refrigerant oils. O-rings are no longer colour-coded. Coloured and black O-rings are used. |
t
| Check that the O-rings used have the correct internal diameters. |
t
| Before fitting a seal, coat it lightly with refrigerant oil (PAG oil). |
Note t
| When purging components with compressed air and nitrogen, always collect the gas mixture exiting the component with suitable exhaust gas extraction equipment (workshop fume extractor). |
t
| After completing repair work, screw sealing caps (with seals) onto valve and service connections. |
Before operating the air conditioning system. Check the vehicle-specific charge quantities → Rep. gr.87. |
Do not top up a charged refrigerant circuit; discharge refrigerant present and recharge system. |
|
|
|