A/C - Refrigerant Circuit Cleaning Procedure: Overview

87 Cleaning of the air conditioning refrigerant circuit

87 11 23

2018162/3

September 20, 2011.

Supersedes Technical Service Bulletin Group 87 number 08 - 13 dated December 5, 2008 for reasons listed below.





Affected Vehicles





Condition
Repeat repairs of air conditioning system. Debris was dispersed throughout the refrigerant circuit after air conditioning component damage. During the first repair, the refrigerant circuit was not thoroughly cleaned. The debris has contaminated the new components.

Technical Background

In cases where an air conditioning system component (such as a compressor or other system component) has failed and debris from the compressor or component is circulated throughout the refrigerant circuit, the refrigerant circuit must be cleaned of any and all debris or damage to the replacement components will result.

The cleaning method until now has been disassembly of each part of the refrigerant circuit, blowing out the debris with compressed air, and drying the components with nitrogen. This was ineffective for this purpose and labor intensive. A more thorough and less time consuming method is flushing the circuit with refrigerant.

Production Solution

Not applicable.





Warranty





Required Parts and Tools

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.