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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1772 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Compressor Clutch Coil Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the mounting surfaces on the A/C clutch field coil and pulley.
    2. Fig 1: A/C Clutch Field Coil
    GM932572Courtesy of GENERAL MOTORS CORP.
  2. Install the A/C clutch field coil.
    3. Fig 2: Field Coil Snap Ring
    GM932565Courtesy of GENERAL MOTORS CORP.
  3. Use SA9149AC-8  to install the field coil snap ring with the bevel side out. See Special Tools .
    4. Fig 3: Thermal Switch Bolt & Hold-Down Bracket
    GM932586Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: It is important to use Saturn Sealant P/N 22681632 as a thermal conductive material. Failure to use this sealant may affect the function of the switch.
  4. Clean the thermal switch pocket if necessary.
  5. Apply thermal switch sealant, approximately the size of a pea, into the switch pocket.
  6. Install the thermal switch by pushing the switch into place and wetting out the sealant, while holding the switch in place. Wipe away any excess sealant.
    7. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  7. Install the thermal switch hold-down bracket and bolt.

    Tighten:  Tighten the bolt to 6 N.m (53 lb in).

    8. Fig 4: Clutch Bearing/Pulley Assembly & Hub
    GM932576Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The A/C clutch bearing and pulley is a slip fit on the compressor. If correctly aligned the pulley should slip on easily. If difficulty is encountered, install using the pulley installer tool.
  8. Use J 45504  to align the clutch bearing/pulley assembly over the hub. See Special Tools . Gently tap on the assembly to install.
    9. Fig 5: Field Coil Snap Ring
    GM932565Courtesy of GENERAL MOTORS CORP.
  9. Use SA9149AC-8  to install the pulley snap ring with the bevel side out. See Special Tools .
    10. Fig 6: Compressor Clutch Assembly & Spacer
    GM932532Courtesy of GENERAL MOTORS CORP.
  10. Install the spacer.
    11. Fig 7: Clutch Nut, Disk & Hub Assembly
    GM932522Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Align the block tooth on the disk and hub assembly with the groove in the shaft.
  11. Install the drive plate and nut. Use the old nut to evaluate the clearances.
    12. Fig 8: Measuring Clearance Between Pulley & Drive Plate Using Feeler Gauge
    GM932582Courtesy of GENERAL MOTORS CORP.
  12. Using a feeler gauge, verify that the clearance is 0.35-0.75 mm (0.014-0.030 in).
  13. If necessary, adjust the clearance by adding or removing clutch hub spacers.
    14. Fig 9: Clutch Nut, Disk & Hub Assembly
    GM932522Courtesy of GENERAL MOTORS CORP.
  14. Once the correct air gap is obtained, install a new clutch nut. Use J 45267  to hold the disk and hub assembly while tightening. See Special Tools .

    Tighten:  Tighten the nut to 19 N.m (14 lb ft).

  15. Install the compressor. Refer to Compressor Replacement .
  16. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  17. Use J 39400-A  to leak test the fittings. See Special Tools .
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