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6.4L Rocker Arms

A look at 6.4L rocker arms. On the left the tip is missing and you can see the wear inside the cup. on the right the tip is still there however it is badly worn and recessed into the rocker. Inspection also showed that the tip no longer freely moved in the cup. During any tear down and inspection this is one area to be sure to inspect and it warrants looking at ALL of them. The rockers are best serviced as an assembly because this type of wear typically will be found at more than one cylinder if not all of them.


© Keith Browning

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General Mechanical Failures

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Photo Information for 6.4L Rocker Arms


  • 6.4 mm
  • 10/600
  • f f/3.8
  • ISO 100
View all photo EXIF information