F 350 2WD Super Duty V8-6.4L DSL Turbo (2009)
Valve Guide: Service and Repair
Engine System - General Information
Valve Guide Inner Diameter
NOTE: Refer to the Engine system level for the specification.
1. NOTE: Valve guides tend to wear in an hourglass pattern. The ball gauge can be inserted into the combustion chamber side of the valve guide, if
necessary.
Use a ball gauge to determine the inside diameter of the valve guides in 2 directions at the top, middle and bottom of the valve guide.
2. Measure the ball gauge with a micrometer.
3. If the valve guide is not within specifications, install a new cylinder head assembly.