CONSTRUCTION
The valve lash adjuster assemblies, which are located at the fulcrum (pivot point) of the No. 1 valve rocker arm sub-assemblies, each consist primarily of a plunger, plunger spring, check ball, and check ball spring.
Both the engine oil that is supplied by the cylinder head and the built-in spring actuate the valve lash adjuster assembly. The oil pressure and the spring force that act on the plunger push the No. 1 valve rocker arm sub-assembly against the cam, in order to adjust the clearance between the valve stem and the No. 1 valve rocker arm sub-assembly. This prevents the generation of noise during the opening and closing of the valves. As a result, engine noise is reduced.
| *1 | Plunger | *2 | Oil Passage |
| *3 | Check Ball | *4 | Check Ball Spring |
| *5 | Plunger Spring | *6 | No. 1 Valve Rocker Arm Sub-assembly |
| *7 | Cam | *8 | Valve Lash Adjuster Assembly |