TM 9-2320-260-34-1
3-22. FLYWHEEL HOUSING MAINTENANCE (Contd)
d. Adjustment
NOTE
Flywheel bore must be centered to crankshaft rotation. Follow
steps 1 through 15 using a dial indicator with dial gage
attachment.
1. Attach dial indicator attachment to crankshaft flange (11) and position dial indicator plunger
against flywheel housing bore (12).
2. Mark flywheel housing (2) with chalk at 3, 6, 9, and 12 o'clock positions.
3. Set dial indicator to zero. Position dial indicator plunger at 3 o'clock position by rotating crankshaft
flange (11).
NOTE
The highest reading recorded in steps 4 and 5 determines the up
or down direction the flywheel housing must be moved.
4. Rotate crankshaft flange (11) on flywheel housing (2) clockwise from 3 o'clock to 9 o'clock position.
Record the highest reading.
5. Rotate crankshaft flange (11) on flywheel housing (2) clockwise from 9 o'clock to 3 o'clock position.
Record the highest reading.
6. Rotate crankshaft. flange (11) on flywheel housing (2) and indicator attachment to point on flywheel
housing bore (12) where highest reading was recorded.
7. Set dial indicator to read one-half of total highest reading.
8. Loosen screws (13) slightly on flywheel housing (2). Tap flywheel housing bore (12), using soft-head
hammer, opposite the dial indicator until it reads zero. Finger tighten screws (13).
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