Operation CHARM
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GMC Truck
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1988
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R 1500 P/U 2WD V8-454 7.4L
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Repair and Diagnosis
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Specifications
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Mechanical Specifications
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Compressor HVAC
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Compressor Clutch
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Compressor Clutch Air Gap
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With R-4 Compressor
With R-4 Compressor
Clutch Plate to Rotor Air Gap
0.5-1.0 mm (0.020-0.040 inch)