Operation CHARM
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GMC Truck
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1989
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R 2500 P/U 2WD L6-292 4.8L
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Repair and Diagnosis
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Heating and Air Conditioning
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Compressor HVAC
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Specifications
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Tightening Specifications
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With A-6 Compressor
With A-6 Compressor
Rear Head to Shell Stud Nuts
34 N.m (25 ft. lbs.)
Shaft Mounting Nut
27 N.m (20 ft. lbs.)
Pressure Relief Valve
19 N.m (14 ft. lbs.)
Oil Drain Screw
20 N.m (15 ft. lbs.)