North American Clutch & Driveline
Rockford, Illinois
Phone: (800) 383-9204
(815) 282-7960
Fax (815) 282-9160
www.naclutch.com
2.7.1 Flywheel Housing Face Runout Deviation Check
Mount the indicator base on the face of the flywheel and position
the dial indicator tip perpendicular to the flywheel housing
mounting flange face. Rotate the flywheel through 360 degrees.
Note: The flywheel and crankshaft of the engine must be held
against either the front or rear of the crankshaft thrust bearing while
the total indicator sweep (TIR) measurement is being made.
The total indicator reading should not exceed:
SAE #0 Housing .010” (.254 mm.)
SAE #1 Housing .008” (.203mm.)
Note: Identify SAE Housings. See 2.1 for
identification of SAE Housings.
2.7.2 Flywheel Housing Bore Runout Deviation Check
Mount the indicator base on the face of the flywheel and position
the dial indicator tip so its movement is perpendicular to the pilot
bore surface of the flywheel housing. Rotate the flywheel through
360 degrees.
The total indicator reading should not exceed:
SAE #0 Housing .10” (.254 mm.)
SAE #1 Housing .008” (.203 mm.)
2.7.3 Flywheel Face Runout Deviation Check
Mount the indicator base on the flywheel housing and position the
dial indicator tip so its movement is perpendicular to the face of
the flywheel. The indicator tip should be positioned near the drive
ring mounting bolt circle diameter. Rotate the flywheel through 360
degrees.
Note: The flywheel and crankshaft of the engine must be held
against either the front or rear of the crankshaft thrust bearing while
the total indicator sweep (TIR) measurement is being made.
Measure the diameter of the drive ring bore in the flywheel.
If bore = 18.375” (466.7 mm.) TIR = .009” (.229 mm.) max.
6