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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Brakes and Traction Control
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Drum Brake System
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Backing Plate
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Specifications
Backing Plate: Specifications
8.5 inch Ring Gear
47 Nm (35 ft lb)
9.5 inch Ring Gear
142 Nm (105 ft lb)
9.75 - 10.5 inch Ring Gear
142 Nm (105 ft lb)
10.5 inch Ring Gear
142 Nm (105 ft lb)