A/C System - Flush Procedure if A/C Compressor Seized

84VW1

Applies To Rabbit, Jetta ( Diesel )


All years
Group


87
Subject

A/C Compressor


Part Identifier 8734
Key Points

Flush A/C system if A/C compressor has seized

C
Number

84-04

October 8, 1984
If A/C compressor has seized during operation, the refrigerant system must be flushed to remove contaminants before installing new compressor.


WARNING

Always wear safety goggles when charging or discharging system. Be sure work area is well ventilated. Refrigerant-12 is heavier than air and can accumulate in areas of poor air circulation.

Avoid inhaling fumes when using flame type leak detector. Refrigerant-12 becomes poisonous gas after coming into contact with open flame


CAUTION

Always discharge refrigerant from air conditioner system before loosening connections, hoses, etc.


Work sequence

- discharge A/C refrigerant system
- remove A/C compressor
- remove expansion valve and inspect for contamination


- flush refrigerant system with refrigerant R-11 using 5 times system charge capacity (approx. 165.0 oz)

Note

Refrigerant R-12 may be used for flushing if refrigerant R-11 is not available.

- replace expansion valve if contaminated
- replace receiver/drier
- install compressor
- evacuate and re-charge A/C refrigerant system