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 TM 55-1905-223-24-3
(b)
Put the tip of the dial indicator gauge against the flyw eel housing surface.
h
(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 ensure the needle still points to "0" (zero).
(i)
Determine the Total Indicator Reading (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
( 0.11)
0.004
(j)
The maximum allowable TIR depends on the diameter of the housing bore. Refer to
Table 3-7.
(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 (see Figure 3-66). Tighten the capscrews to 158 ft-lb
(214 N ) torque.
m
(7)
Remove the lifting fixture used to support the engine.
3-122
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