64 52... Instructions for opening and part replacement in refrigerant circuit

Special tools required: 

• 00 9 030
• 32 1 270

Attention! 

• Always use new O-rings each time A/C connections are opened.

  They must not be coated.

  Use special tool 00 9 030 to install sealing rings without damaging them.

• Open the refrigerant circuit for as short of a period as possible.
• Close all components and lines in the refrigerant circuit and return parts immediately  following the removals at openings with special tool 32 1 270 to prevent penetration of moisture or foreign objects.
• If the refrigerant circuit was closed at the openings with special tool 32 1 270 .
  IMPORTANT: If air conditioning system is opened for more than 24 hours: Replace DESICCANT INSERT  for A/C system.

1. I. Part replacement as preliminary work fur further repair work and part replacement based on gradual leakage. 

   (minor leak, e.g. hairline crack)

   Procedure: 

   • Draw off HEATING AND AIR CONDITIONING SYSTEM , then determine drawn-off amount of refrigerant oil
   • Carry out part replacement
   • Replace removed refrigerant oil and additionally top up with new refrigerant oil according to components replaced:
     • Read and comply with notes on compressor replacement: see NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL NOT KNOWN)  or NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL KNOWN) .
     • Evaporator: 10 ml
     • Capacitor: 20 ml
     • Desiccant insert/dryer flask: 20 ml
     • Each replaced refrigerant line: 10 ml
     • Condenser with integrated dryer flask: 40 ml
     • Safety pressure switch and gasket: no additional refrigerant oil
   • EVACUATE AND FILL  air conditioning system
2. II. Part replacement due to sudden leakage 

   (major leak, e.g. pipe break due to accident)

   Procedure: 

   • Draw off HEATING AND AIR CONDITIONING SYSTEM , then determine drawn-off amount of refrigerant oil
   • Carry out part replacement
   • Replace removed refrigerant oil and additionally top up with new refrigerant oil according to components replaced:
     • Read and comply with notes on compressor replacement: see NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL NOT KNOWN)  or NOTES FOR CHANGING AIR CONDITIONING COMPRESSOR (AMOUNT OF REFRIGERANT OIL KNOWN) .
     • Evaporator: 35 ml
     • Capacitor: 35 ml
     • Desiccant insert/dryer flask: 55 ml
     • Each replaced refrigerant line: 35 ml
     • Condenser with integrated dryer flask: 55 ml
     • Safety pressure switch and gasket: no additional refrigerant oil
   • EVACUATE AND FILL  air conditioning system