6. CYLINDER HEAD/VALVES People GT 300i Rocker Arm Remove the rocker arm with bolt as shown. CAMSHAFT INSPECTION Check each cam lobe for wear or damage. Check each camshaft bearing for play or damage. Replace the camshaft assembly with a new one if the bearings are noisy or have excessive play. Rocker Arm If the surface of rocker arm is worn, check each cam lobe for wear or damage. Camshaft CYLINDER HEAD REMOVAL Bolt Remove the muffler. Remove the throttle body. Drain the coolant from the radiator and water hose, then remove the thermostat water hose. Remove the camshaft. Remove the Temp/Map Sensor and intake manifold. Remove the bolt attaching the thermostat housing and the thermostat housing. Remove the cylinder head. Thermostat 6-6