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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1175 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Compressor Leak Testing (V7 - Direct Mount) >> Tools Required

Tools Required

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the sealing washers in place, install the J 39893  on the rear head of the A/C compressor.
  2. Connect the gage charging lines and the J 43600  .
  3. Pressurize the suction and the high-side of the A/C compressor with R-134a refrigerant.
  4. With the A/C compressor in a horizontal position, rotate by hand the A/C compressor shaft in the operating direction.
  5. Rotate the shaft several times.
  6. Using the J 39400  , check for leaks at the following locations:
    1. 6.1 Pressure relief valve
    2. 6.2 Rear head switch
    3. 6.3 Front head seal
    4. 6.4 Rear head seal
    5. 6.5 Through bolt head gaskets
    6. 6.6 A/C 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  .
  11. Remove the J 39893  .
Fig 1: Installing J 39893 On Rear Head Of A/C Compressor
G01418518Courtesy of GENERAL MOTORS CORP.
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