D379, D398, D399 INDUSTRIAL & MARINE ENGINES Caterpillar

Face Runout (axial eccentricity) of the Flywheel Housing:

1. Fasten a dial indicator to the crankshaft flange so the anvil of the indicator will touch the face of the flywheel housing.

2. Put a force on the crankshaft toward the rear before reading the indicator at each point.

3. With dial indicator set at .000 in. (0.0 mm) at location (A), turn the crankshaft and read the indicator at locations (B), (C) and (D).

4. The difference between lower and higher measurements taken at all four points must not be more than .012 in (0.30 mm), which is the maximum permissible face run out (axial eccentricity) of the flywheel housing.