K 2500 Truck 4WD V8-454 7.4L VIN J SFI (1997)
Camshaft: Testing and Inspection
MEASURING
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Tools Required
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J 7872 Dial Indicator, Or Equivalent
NOTE: Whenever the camshaft needs to be replaced, a new set of valve roller lifters must also be installed.
1. Measure the camshaft journal diameters using a micrometer.
2. Measure the camshaft runout.
(1) Mount the camshaft in V-blocks or between centers.
(2) Use the dial indicator in order to check the intermediate camshaft journal.
(3) The camshaft runout should not exceed 0.051 mm (0.002 inch).
