DETROIT DIESEL 53
VALVE ROCKER COVER
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 one of the covers on a v-type engine.
Remove and Install Valve Rocker Cover
Clean the 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 installing the valve rocker cover.
Fig 1. - Typical Valve Rocker Cover Assembly
1970 General Motors Corp
SEC 1.2.4 Page 1