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Installation (8.1L with Harrison - 3500 HD, Cab & Chassis, Sierra, Silverado)

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  1. Add the proper amount of PAG oil to the compressor crankcase. See SPECIFICATIONS . Install the A/C compressor drain plug. Tighten to specification. See TORQUE SPECIFICATIONS .
    2. NOTE: Insert the mounting bolt into the lower right mounting bracket before installing the A/C compressor.
  2. Install the A/C compressor to the mounting bracket. See Figure. Install the 3 A/C compressor mounting bolts. Tighten to specification.
  3. Connect the electrical connection. Install the A/C compressor hose assembly to the compressor using new sealing washers. Install the A/C compressor hose assembly bolt to the A/C compressor. Tighten to specification.
  4. Install the right wheel house panel. Install the right front tire and wheel assembly. Lower the vehicle. Install the A/C drive belt. Evacuate and recharge the A/C system. See RECOVERY/EVACUATION & RECHARGING in GENERAL SERVICING PROCEDURES article in GENERAL SERVICING. Leak test the fittings of the component using a Leak Detector.
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