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Check the engine fl ywheel’s radial and face runout by mounting a dial
indicator and measuring the fl ywheel housing to the fl ywheel as shown
in Figure 3. The maximum allowable fl ywheel runout is .0005” per inch
of radius with a maximum of .010”.
NOTICE: TIR = Total indicated runout
NOTICE:
Compensation for engine
thermal growth must be taken into
account on this measurement.
SAE housing
number
6
5
4
3
2
1
0.5
0
00
10.500
12.375
14.250
16.125
17.625
20.125
23.000
25.500
31.000
Housing inside
dia.
Table 1: Maximum allowable
fl ywheel housing runout (inches)
Figure 3: Flywheel check
Shaft
Flywheel
Flywheel housing
Dial indicator pointer
for radial runout
Dial indicator
pointer for face
runou
t
0.002
0.003
0.003
0.004
0.004
0.005
0.005
0.006
0.007
Allowable
runout (TIR)
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