Mopar 4648702AC Exhaust Rocker Arm

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Position the number one piston at Top Dead Center and disconnect the cable from the negative battery terminal. Remove the valve cover and mark the front rocker arm shaft as the intake and the rear as the exhaust before loosening the rocker arm shaft bolts a quarter turn at a time until the spring pressure is relieved, ensuring the bolts remain in place to prevent the assembly from falling apart when lifted off the cylinder head. Lift the rocker arms and shaft assemblies from the cylinder head and set them on the workbench, taking care not to intermix the unique intake and exhaust parts. Inspect the rocker arm assemblies and disassemble the rocker arm shaft components, marking all parts for reassembly in their original locations. To maintain order, consider using lengths of wire to hold the parts in the sequence they were removed, marking each wire to indicate the front of the engine. Visually check the rocker arms for wear, including the shaft bore and roller for any score marks, pitting, or signs of overheating, and replace any worn or damaged components. Before installation, ensure each lash adjuster is at least partially full of oil, and when reassembling, return all parts to their original locations. On the intake rocker arm shaft, confirm that the plastic spacers are correctly positioned, and prior to installing the rocker arm shaft, rotate the crankshaft to position the crankshaft timing sprocket at the three notches BTDC. Install the rocker arm assemblies with the notch in each rocker arm shaft facing the timing belt end of the engine and facing up, then tighten the rocker arm bolts in sequence to the specified torque.

Identify each rocker arm and shaft according to its proper location, ensuring not to interchange them to avoid premature wear.

Loosen the rocker arm shaft bolts gradually until the valve spring pressure is relieved, then completely loosen the bolts without removing them to keep the assembly intact.