Compressor Leak Testing (CVC7)

Tools Required

• J 39400-A  Halogen Leak Detector. See Special Tools .
• J 43600  ACR 2000 Air Conditioning Service Center. See Special Tools .
• J 39893  Pressure Test Adapter. See Special Tools .

Fig 1: Installing J 39893 Onto Rear Head Of Compressor (CVC7)
Courtesy of GENERAL MOTORS CORP.
1. With the sealing washers in place, install the J 39893  on the rear head of the compressor. See Special Tools .
2. Connect the gage charging lines and the J 43600  . See Special Tools .
3. Pressurize the suction and the high-side of the compressor with R-134a refrigerant.
4. With the compressor in a horizontal position, rotate by hand the compressor shaft in the operating direction.
5. Rotate the shaft several times.
6. Using the J 39400-A  , check for leaks at the following locations:
   • Pressure relief valve
   • Rear head switch
   • Front head seals
   • Rear head seals
   • Through bolt head gaskets
   • Compressor shaft seal
7. Perform the measures necessary to correct any external leaks found.
8. Recheck for leaks following any repair.
9. Recover the refrigerant.
10. Disconnect the hoses from the J 39893  . See Special Tools .
11. Remove the J 39893  . See Special Tools .