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 TM 55-1905-223-24-3
(5) If the TIR is greater than the specification, perform the following:
(a) Remove the flywheel.
(b) Inspect the flywheel mounting surface for dirt or damage.
(c) Inspect the crankshaft for dirt or damage.
(d) Install the flywheel, and inspect the bore runout again.
(e) Replace the flywheel if the runout does not meet specifications.
e. Measure the flywheel face runout (Figure 3-80) as follows:
(1) Install the contact tip of the indicator against the flywheel face, as close to the outside diameter as
possible.
(2) Push the flywheel forward to remove the crankshaft end clearance. Adjust the dial on the indicator
until the needle points to "O" (zero).
(3) Use the accessory drive shaft to rotate the crankshaft one complete revolution. Measure the
flywheel runout at four equal points on the flywheel.
NOTE
The flywheel must be pushed toward the front of the engine to remove the
crankshaft end clearance each time a point is measured.
FIGURE 3-80. Checking Flywheel Face
3-128
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