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A/C Compressor Clutch: Installation

WARNING: This page is about a different car, the 2006 Dodge Viper. However, it is still accessible from the selected car via links, so may be relevant.
  1. Align the dowel pin on the back of the compressor clutch field coil with the hole in the front of the A/C compressor and position the field coil onto the compressor. Be certain that the compressor clutch field coil wire lead is properly routed so that it is not pinched between the A/C compressor and the field coil.
    CAUTION: The snap ring must be fully and properly seated in the groove or it will vibrate out, resulting in a clutch failure and severe damage to the A/C compressor.
    NOTE: A new snap ring must be used to secure the compressor clutch field coil to the A/C compressor. The bevel side of the snap ring must face outward and both snap ring eyelets must be oriented to the right or to the left of the field coil dowel pin location on the A/C compressor.
  2. Using snap ring pliers (Special Tool C-4574 or equivalent), install the nap ring that secures the compressor clutch field coil to the front of the A/C compressor. Be certain that the snap ring is fully and properly seated in the groove and oriented correctly.
    CAUTION: Be certain to position the compressor clutch field coil wire lead so that it is not damaged during A/C compressor pulley and bearing installation.
    CAUTION: When installing the pulley and bearing assembly, DO NOT mar the friction surfaces of the pulley or premature failure of the clutch will result.
  3. Install the pulley and bearing assembly onto the front of the A/C compressor. If necessary, tap the pulley gently with a block of wood placed on the pulley friction surface. See Fig 1.
    Fig 1: Installing Pulley & Bearing Assembly
    GC0001402Courtesy of DAIMLERCHRYSLER CORP.
    1 - PULLEY AND BEARING
    2 - WOOD BLOCK
    NOTE: A new snap ring must be used to secure the clutch pulley to the compressor. The bevel side of the snap ring must face outward.
    CAUTION: The snap ring must be fully and properly seated in the groove or it will vibrate out, resulting in a clutch failure and severe damage to the A/C compressor.
    NOTE: A new snap ring must be used to secure the pulley and bearing assembly to the A/C compressor. The bevel side of the snap ring must face outward.
  4. Using snap ring pliers, install the snap ring that secures the pulley and bearing assembly to the front of the A/C compressor. Be certain that the snap ring is fully and properly seated in the groove.
  5. If the original clutch plate and pulley and bearing assembly are to be reused, reinstall the original shim(s) onto the compressor shaft. If a new clutch plate and pulley and bearing assembly are being used, install a trial stack of shims 2.54 mm (0.010 in.) thick onto the compressor shaft.
  6. Install the clutch plate onto the front of the A/C compressor.
  7. Install the compressor shaft bolt. Tighten the bolt to 19 N.m (168 in. lbs.).
    NOTE: The shims may compress after tightening the shaft bolt. Check the air gap in four or more places to verify the air gap is correct. Spin the pulley before performing a final check of the air gap.
  8. With the clutch plate assembly tight against the shim(s), measure the air gap between the clutch plate and the pulley face with a feeler gauge. The air gap should be between 0.35 - 0.60 mm (0.014 - 0.024 in.). If the air gap is not between specifications, add or subtract shims as needed until the correct air gap is obtained.
  9. Install the compressor shaft bolt. Tighten the bolt to 17.5 N.m (155 in. lbs.).
    CAUTION: Be certain that the compressor clutch field coil wire lead is routed so that it is not pinched between the A/C compressor and the field coil connector bracket.
  10. Carefully route the compressor clutch field coil wire lead behind the connector bracket.
  11. Install the compressor clutch field coil connector onto the connector bracket.
  12. Reposition the A/C compressor to the engine and install the retaining bolts. Tighten the bolts to 23 N.m (17 ft. lbs.).
  13. Connect the engine wire harness to the compressor clutch field coil connector.
  14. Install the accessory drive belt (Refer to COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION) .
  15. Lower the vehicle.
  16. Reconnect the negative battery cable.
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