Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
NOTE: A drum which is out of round will cause a pedal pulsation to be felt upon braking.
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The measurement should also be repeated at various depths of the drum to check for a bellmouth condition. If the measurements differ by more
than .010 inches the drum should be resurfaced.
NOTE: 1 inch = 25.4mm, so if your micrometer measures in inches and the specified thickness on the disc is in millimeters, convert millimeters
to inches by dividing the specified number of millimeters by 25.4.
Example: Specification on disc is 17.8 mm.
Dividing 17.8mm by 25.4mm/in = 17.8/25.4 = 0.70 inches.
