8. CYLINDER HEAD/VALVES MXU 550EXi /MXU500i Dowel Pins INSTALLATION Install the dowel pins and new gasket as shown. Gasket Install the cylinder head. Apply engine oil to the cylinder head bolt (9) threads. Install the bolt (9) but do not tighten it. Camshafts Intake Camshaft Holder Install the camshafts, intake camshaft holder and exhaust camshaft holder (refer to the "CAMSHAFT REMOVAL/INSPECTION/ INSTALLATION" section in this chapter). Exhaust Camshaft Holder 8-19