(57) A heavy-duty rocker arm construction is provided, particularly for diesel engines.
The rocker arm (20) is stamped and consists of two stamped metal sheets (32, 60) each
having wide portions jointed by a narrow web portion. The wide portions are turned
back around the web portion and are located in continuous relationship to form the
main body portion of the rocker arm (20) and with push rod screws (86) and stem pads
(84) carried by the now-looped web portions. The resulting four layers (34, 36, 62,
64) of metal in the main body portion of the rocker arm (20) provide the desired strength
at the middle portion without resulting in excessive weight in the outer end portions
of the rocker arm.
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