TSB 9221: A/C - Use of Refrigerant R-134A

Details

November 3, 1992 Model All Group 8 Part Identifier 8700 Number 9206 Subject: Refrigerant R-134a ATTENTION: Service Manager/Service Technician Models Affected: All models from 1993 on Concern: Use of R-134a air conditioning refrigerant . General Information: Beginning with model year 1993, Porsche vehicles will use CFC free refrigerant (R-134a) in the air conditioning systems of most 1993 models. R-134a is used in: All 1993 968's All 1993 Carrera 2's All 1993 Carrera 4's 1993 928's from WP0 AA 2929 PS 82 0061 1993 RS's from WP0 AB 2969 PS 41 9061 Refrigerant R-134a and refrigerant R-12 ARE NOT compatible with each other. Care must be taken to identify the refrigerant type before servicing or making any repairs. Many of the components in the R-134a system are different from those used in A/C systems using R-12. Always consult the latest Porsche parts microfiche before ordering or replacing parts. This will help prevent any possibility of damaging the A/C system. The refrigerant oil which is used in R-134a A/C systems is also different It is a synthetic oil marketed by Nippondenso and is the only refrigerant oil currently approved for use in Porsche A/C systems using R-134a. See Warranty Bulletin Number 9221, dated August 13, 1992 which outlines the Warranty Part Numbers to be used for Warranty Claim Reimbursement. All A/C systems and components charged with R-134a have been marked accordingly. When servicing A/C systems using R-134a refrigerant use of specialized recycling equipment is required. Porsche Cars N.A. currently recommends the Sun MRC 450. Refer to Equipment Bulletin Number 9202.