Posted on November 3, 2020 C7 Industrial Engines Disassembly and Assembly – Rocker Arm and Shaft – Install Installation Procedure Apply Tooling (A) to both ends of the pushrods. Lubricate the pushrods with clean engine oil. Install the pushrods and the valve bridges. Position rocker shaft (4) on the cylinder head. Install bolts (1) and tighten the bolts in a numerical sequence. Apply Tooling (A) to each of the bottom faces of the rocker arms. Position rocker arm adjustment screws (2) and tighten nuts (3) . Adjust the valve lash of the rocker arms. Refer to Testing and Adjusting, “Engine Valve Lash – Inspect/Adjust”. End By: Install the valve mechanism cover. Refer to Disassembly and Assembly, “Valve Mechanism Cover – Remove and Install”.