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 TM 9-2815-226-34-2
CAUTION
SQUARENESS OF THE FACE OF THE FLYWHEEL HOUSING AND ITS RELATIVE
POSITION (CONCENTRICITY) TO CENTERLINE OF CRANKSHAFT MUST BE
WITHIN SPECIFICATIONS TO ENSURE PROLONGED ENGINE LIFE.
(c)
Secure ST-1325 dial gage attachment to end of crankshaft.
(d)
Slide dial indicator on attachment and position indicator contact pin against inside surface
of flywheel housing at 9 o'clock position. Secure and zero indicator.
(e)
Draw chalk lines at 3, 6, 9, and 12 o'clock positions on rear bolt circle flange of housing.
(f)
Rotate crankshaft and observe run-out at 3 and 9 o'clock positions. Record reading.
(g)
Observe run-out at 6 and 12 o'clock positions. Record readings.
NOTE
Dowel pins are removed so that block can be redoweled once concentricity is
established.
(h)
If 0.006 in. (0.152 mm) run-out is exceeded in either recorded position, remove housing
and dowel alinement pins in block.
(i)
Reinstall housing and recheck run-out.
3-446
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