Figure 50.
o
Test 18. This is the final test that applies to troubleshooting
the APU engine starting system when the engine fails to crank
during operation of the starting switch. This test requires that
the ground leads of the starter/generator are secure (Figure 51).
If the ground leads are secure and the APU still does not crank,
replace the starter/generator as outlined in TM 9-2350-267-20.
Figure 51.
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OD1702