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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C Compressor Overhaul >> NIPPONDENSO 10PA20 Shaft Seal R & I >> Installation

NIPPONDENSO 10PA20 Shaft Seal R & I: Installation

  1. Lubricate new shaft seal and seal cavity of front head with refrigerant oil. Press seal into front head and install snap ring.
  2. Lubricate front head "O" ring with refrigerant oil. Install front head "O" ring on cylinder assembly. Install Shaft Protector (J-34614) on compressor shaft. Install front head on cylinder assembly. Ensure dowel pins align.
  3. Install all through bolts with NEW washers. Tighten through bolts to 18 ft. lbs. (24 N.m). Remove shaft protector. Install felt dust seal and dust seal retainer.
  4. Using INCH-pound torque wrench, check compressor shaft rotating torque. Rotating torque should be 26 INCH lbs. (3 N.m). Install clutch assembly. Add amount of refrigerant oil that was drained to compressor. Install compressor. Evacuate and recharge system. Perform leak test.
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