TM 10-3930-659-34 5-3. PISTON, CONNECTING ROD, AND CONNECTING ROD BEARING MAINTENANCE (Con’t). NOTE All six pistons and connecting rods are maintained the same way. One piston and connecting rod is illustrated. a. REMOVAL CAUTION DO NOT rotate crankshaft until cylinder liners are secured with washers and screws.  Failure to follow this caution may result In damage to parts. 1. Install seven 1/8 in. thick washers (2) and 1/2 x 13 UNC-2A screws (3) in engine block (1). Torque screws to 50 lb.- ft. (68 N•m). 2. Using flexible carbon scraper, remove carbon ridge from cylinder liner (4). 5-22