TM 9-4940-568-34
5-62
5-11. FLYWHEEL RING/GEAR AND FLYWHEEL HOUSING REPLACEMENT (CONT).
(6)
Rotate crankshaft until dial indicator is at 12
o’clock position and zero the gauge.
Do not force the crankshaft
beyond the point where bearing
clearance has been removed. Do
not pry against the flywheel
housing. These actions could
cause cause bearing clearance
readings.
(7)
Using a pry bar, raise rear of crankshaft to
its upper limit. Record the value as (d) in
the concentricity work sheet. This is the
vertical bearing clearance adjustment and
will always be positive.
(8)
Using the concentricity work sheet,
determine the values for the “total vertical”
and “total horizontal” values.
(9)
The “total horizontal” is equal to the 9
o’clock reading, (a), minus the 3 o’clock
reading, (c).
(10)
The “total vertical” is equal to the 12
o’clock reading, (b), plus the bearing
clearance, (d).
Example:
6 o’clock = ref = 0
9 o’clock = ref = 0.004”
12 o’clock = ref = 0.003”
3 o’clock = ref = –0.002
(11)
Using the work sheet and the numbers from
the example:
“total horizontal” value = 0.006”
“total vertical” value = 0.005”.
