3208 – Flywheel Runout

Face Runout (Axial Eccentricity) Of The Flywheel:


Checking Face Runout Of The Flywheel

1. Install the dial indicator as shown. Put a force on the flywheel toward the rear.

2. Set the dial indicator to read 0.00 mm (.000 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 0.15 mm (.006 in), which is the maximum permissible face runout (axial eccentricity) of the flywheel.

Bore Runout (Radial Eccentricity) Of The Flywheel:


Checking Flywheel Bore
(1) 7H1945 Holding Rod. (2) 7H1645 Holding Rod. (3) 7H1942 Indicator. (4) 7H1940 Universal Attachment.

1. Install the 7H1942 Indicator (3) and make an adjustment of the 7H1940 Universal Attachment (4) so it makes contact as shown.

2. Set the 7H1942 Indicator (3) to read 0.00 mm (.000 in).

3. Turn the flywheel and read the 7H1942 Indicator (3) 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), which is the maximum permissible bore runout (radial eccentricity) of the flywheel.


Checking Flywheel Clutch Pilot Bearing Bore

5. Runout (eccentricity) of the bore for the pilot bearing for the flywheel clutch, must not exceed 0.13 mm (.005 in).

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