This service manual from Cummins provides detailed instructions for the cylinder head capscrew torque procedure on B Series engines (including 4B, B3.9, 6B, ISB, QSB5.9, and B5.9). It outlines the “Torque Plus Angle” method used to ensure proper tightening of the cylinder head bolts, improving sealing and preventing gasket failure. The manual includes torque specifications, tightening sequences, inspection and reuse criteria for capscrews, required tools, and an addendum covering pre-1991 and post-1991 bolts.