HEATER AS 4441977 - Caterpillar

Checking Face Runout Of The Flywheel1. Install the dial indicator as shown. Put a force on the flywheel toward the rear.2. Set the dial indicator to read 0.0 mm (.00 in).3. Turn the flywheel and read the indicator every 90 degrees. Put a force on the flywheel to the rear before each reading.4. The difference between the lower and higher measurements taken at all four points must not be more than: 7W1248 and 6N1301 Flywheel Assemblies ... 0.15 mm (.006 in)2W9759 and 4N1070 Flywheel Assemblies ... 0.43 mm (.017 in)All other Flywheel Assemblies ... 0.23 mm (.009 in)This is the maximum permissible face runout (axial eccentricity) of the flywheel.Bore Runout (Radial Eccentricity) Of The Flywheel:
Checking Flywheel Bore1. Install the dial indicator (3) and make an adjustment of the universal attachment (4) so it makes contact as shown.2. Set the dial indicator to read 0.0 mm (.00 in).3. Turn the flywheel and read the indicator every 90 degrees.4. The difference between the lower and higher measurements taken at all four points must not be more than ... 0.15 mm (.006 in)
Checking Flywheel Clutch Pilot Bearing Bore5. Runout (eccentricity) of the bore for the pilot bearing for the flywheel clutch, must not exceed: 7W1248 Flywheel Assembly ... 0.13 mm (.005 in)6N1301 Flywheel Assembly ... 0.12 mm (.005 in)2W9750 and 4N1070 Flywheel Assemblies ... 0.23 mm (.009 in)