Parking Brake Shoe Inspection for GMC Truck GMC P42 Commercial Chassis 1999

Replace the brake shoe and lining assemblies whenever the thickness of any lining is worn to within 0.76 mm (0.030 in) of the shoe. For riveted shoe and lining assemblies, replace when the lining is worn to within 0.76 mm (0.030 in) of any rivet head.