Edmunds Answers

Answers

  • MrShift@Edmunds 06/06/11 5:36 pm PST

    REMOVAL

    1. Disconnect and isolate the battery negative cable.
    2. Remove the serpentine drive belt.
    3. Remove the bolt that secures the compressor clutch to the compressor shaft. A band type oil filter wrench may be used to secure the clutch during bolt removal.
    4. Tap the clutch plate with a plastic mallet to release it from the splines on the compressor shaft. Remove the clutch plate and shim(s) from the compressor shaft.
    5. CAUTION: Do not pry between the clutch plate assembly and the pulley to remove it from the compressor shaft. Prying may damage the clutch plate assembly.
    6. Remove the external snap ring that secures the compressor clutch pulley to the nose of the compressor front housing with snap ring pliers (Special Tool C-4574) and slide the pulley assembly off of the compressor.
    7. Remove the screw and retainer from the clutch coil lead wire harness on the compressor front housing.
      1. Remove the external snap ring that secures the compressor clutch coil to the nose of the compressor front housing with snap ring pliers and slide the coil assembly off of the compressor.

      INSPECTION
      Examine the friction surfaces of the clutch pulley and the clutch plate for wear. The pulley and plate should be replaced if there is excessive wear or scoring.

      If the friction surfaces are oily, inspect the shaft and nose area of the compressor for refrigerant oil. Remove the felt wick from around the shaft inside the nose of the compressor front housing. If the felt is saturated with refrigerant oil, the compressor shaft seal is leaking and the compressor must be replaced.

      Check the clutch pulley bearing for roughness or excessive leakage of grease. Replace the bearing, if required.

      INSTALLATION

      1. Align the dowel pin on the back of the clutch field coil with the hole in the compressor front housing and press the field coil into place over the nose of the compressor.
      2. Install the clutch coil lead wire harness retaining clip on the compressor front housing and tighten the retaining screw.
      3. Install the clutch field coil and snap ring with snap ring pliers (Special Tool C-4574). The bevel side of the snap ring must be facing outward. Also, both eyelets of the snap ring must be to the right or left of the pin on the compressor. Press in on the snap ring to be certain that it is properly seated in the groove.

      CAUTION: If the snap ring is not fully seated in the groove it will vibrate out, resulting in a clutch failure and severe damage to the front housing of the compressor.

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