Rework Starter/Generator (Fig. 24)
NOTE: Rework to the starter/generator must be per-
formedbyaproperlytrainedtechnicianusingthecorrect
tools and equipment for testing and reworking electrical
motors and generators. It may be more economically
feasible to replace the starter/generator than have it re-
worked.
Detail
Minimum commutator diameter
Commutator concentricity to the shaft
Commutator machining limit per cut
Insulator depth between commutator bars
Armature insulation resistance
Dielectric (insulation strength)
Starter field coil resistance
Specification
1.575 inches (40 mm)
0.0003 inch (0.008 mm)
0.005 inch (0.127 mm)
0.020 inch (0.5 mm)
0.2 Mohm at 500 VDC
500 VDC for one minute with no insulation break down
2.38 to 2.44 ohms at 20
C (68 F)
o o
Generator field coil resistance
o o
0.041 ohm for F1 and 0.043 ohm for F2 at 20 C (68 F)
Electrical System
Page 6 -- 24
Workman MD/MDX
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