1.2.4
DETROIT DIESEL 53
VALVE ROCKER COVER
The valve rocker cover assembly (Fig. 1) completely
encloses the valve and injector rocker arm compart-
ment 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.
Fig. 1 - Typical Valve Rocker Cover Assembly
Use a new gasket when re-installing the cover.
SEC. 1.2.4 Page 1
November, 1973