TM 10-3950-672-24-2
Occasional failure of a starter to engage can be caused
by damaged teeth on the ring gear. Service ring gears
are available for repairing flywheels (refer to page 5-
215).
When troubleshooting a transmission vibration problem,
it may be necessary to measure the concentricity of
flywheel housing-to-crankshaft.
Note: The following procedure is for
use with an indicator whose needle
rotates clockwise as the top is
depressed.
Flywheel Housing Concentricity Check
Attach a dial indicator to the crankshaft as illustrated.
Note: The extension bar for the
indicator must be rigid for an
accurate reading. It must not sag
Position the indicator at the 12 o'clock position. Adjust
the dial until the needle points to zero.
Slowly rotate the crankshaft. Record the readings
obtained at the 3 o'clock, 6 o'clock and 9 o'clock
position.
5-181