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 TM 55-1905-223-24-5
(b) Put the tip of the dial indicator gauge against the flywheel housing surface.
(c) Use the accessory drive to rotate the crankshaft until the dial indicator is at the 12 o'clock position.
(d) Push the crankshaft toward the front of the engine. Adjust the dial on the indicator until the needle
points to "0" (zero).
NOTE
The crankshaft must be pushed toward the front of the engine to remove the
crankshaft end clearance each time a point is measured.
(e) Use the accessory drive to rotate the crankshaft in the clockwise direction.
(f) Record the indicator reading at three different points: 3 o'clock, 6 o'clock, and 9 o'clock.
(g) Continue rotating the crankshaft until the dial indicator is at the 12 o'clock position.
(h) Check the dial indicator to make sure the needle still points to "0" (zero).
(i) Determine the total indicator run out (TIR) as follows:
mm
in
Example:
12 o'clock
( 0.00)
0.00
3 o'clock
(+ 0.08)
+ 0.003
6 o'clock
(- 0.05)
- 0.002
9 o'clock
(+ 0.08)
+ 0.003
Equals TIR
( 0.13)
0.005
(j) The maximum allowable total indicator reading (TIR) depends on the diameter of the housing bore.
Refer to Table 3-10.
(k) If the alignment is not within specifications, remove the housing. Check for nicks, burrs, or foreign
material between the block and the housing.
(l) Check the alignment again. If the alignment is not within specifications, the block or the housing is
not machined correctly.
(6) Install the two rear engine mounts. Tighten the capscrews to 158 ft-lb torque.
3-132
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