5-5. MARINE GEAR MAINTENANCE INSTRUCTIONS (Continued).
e. Checking Bore of Engine Flywheel Housing.
With the indicator bolted as in Paragraph d
above, adjust the indicator stem so that it
will ride on the bore of the engine fly-
wheel housing. Rotate the engine flywheel
and note the bore eccentricity of the
engine flywheel housing bore. The bore
eccentricity must not exceed .008-inch
maximum total indicator reading.
Checking Driving Ring Surface of Engine
Flywheel. Bolt a thousandths indicator or
gauge to the engine flywheel housing so
that the indicator is perpendicular to the
engine flywheel, and the indicator stem is
riding on the inner face of the flywheel.
The variation of face runout of the surface
to which the driving ring is bolted should
not exceed .0005-inch maximum total
indicator reading per inch of diameter.