Valve Rocker Assembly

5. Valve Rocker Assembly
- The rocker arm has a special surface treatment to improve the resistance to wear which would result from its movement on the rocker shaft.
- The valve side of the rocker arm is provided with a hydraulic lash adjuster to maintain a 'zero" valve clearance, as well as to provide quiet operation and eliminate the need for valve clearance adjustment.
- The exhaust valve rocker arms have a "Y"- letter design, and each arm operates two exhaust valves.
- The rocker shaft has an oil passage in it. One end of each shaft is provided with a built-in relief valve.