NOTE: On all engines, the cylinder head must be removed from the vehicle and the camshaft(s) and rockers removed from the head.Valves and components must be reinstalled in their original positions. Develop a system to store and identify parts as they are removed. Identify components by location and application (Example: Cyl. 2 exhaust) to avoid confusion. Keep the work area clean and store small parts immediately.The use of the correct special tools or their equivalents may be required for some procedures.