DETROIT DIESEL 53
1.2.4
VALVE ROCKER COVER
Fig. 1 - Typical Valve Rocker Cover Assembly
The valve rocker cover assembly (Fig. 1) completely encloses the valve and injector rocker arm compartment at the top
of the cylinder head. The top of the cylinder head is sealed against oil leakage by a gasket located in the flanged edge of
the cover.
An option plate is inserted in a retainer (Fig. 1) attached to the cover on each In-Line engine.
The valve rocker cover assembly on certain engines may include a breather assembly or an oil filler, depending upon the
engine application.
Remove and Install Valve Rocker Cover
Clean the valve rocker cover before removing it from the engine to avoid dust or dirt from entering the valve mechanism.
Then remove the valve cover screws and lift the cover straight up from the cylinder head. Use a new gasket when re-
installing the cover.
November, 1973
SEC. 1.2.4
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