TM 5-2420-230-24-2
Flywheel (016-005)
B3.9 and B5.9 Series Engines
Page 16-8
Section 16 - Mounting Adaptations - Group 16
Inspect the flywheel ring gear teeth for cracks and chips.
NOTE: If the ring gear teeth are cracked or broken, the ring
gear must be replaced. Refer to Procedure 016-008.
Measure (016-005-010)
Flywheel Bore Runout
Indicator Gauge, Part No. 3376050
Dial Gauge Attachment, Part No. ST-1325
Use the dial indicator gauge (1), Part No. 3376050, or its
equivalent, and dial gauge attachment (2), Part No. ST-
1325, to inspect the flywheel bore (3) and the surface (4)
runout.
Install the attachment to the flywheel housing.
Install the gauge on the attachment.
Install the contact tip of the indicator against the inside
diameter of the flywheel bore, and set the dial indicator at
zero.
Barring Tool, Part No. 3824591
Use the barring tool, Part No. 3824591, to rotate the crank-
shaft one complete revolution.
NOTE: The total indicator reading (TIR) must not exceed
0.127 mm [0.0050 in].
WARNING
The component weighs 23 kg [51 lb] or more. To avoid
personal injury, use a hoist or get assistance to lift the
component.
NOTE: If the total indicator reading (TIR) is greater than the
specification, do the following:
Remove the flywheel.
L-1336