Figure 2-10. Generator G1, Torque Sequence of Adapter Ring and Drive Plates (Flexible Discs)
Check the gap at the 12 o'clock position of the adapter. If it is still within the acceptable limit of 0 to 0.015
inches (0.38 mm), loosen the hexagon head capscrews and lockwashers, securing the generator adapter to
engine flywheel housing and torque capscrews to 50 pound-feet (68 newton-meters) in accordance with
See Figure 2-4, detail B. Install hexagon head capscrews and locking plates to secure the generator drive
discs to the engine flywheel. Torque the capscrews to 112 pound-feet (152 newton-meters) in accordance
with Figure 2-10 and bend a locking plate corner to a flat side of each screw. After installing at least two
hexagon head capscrews remove the guide pins that were used to pilot the generator to the engine.
See Figure 2-3. Install and secure cover and screen on generator adapter.
See Figure 2-11 and check the exciter air gap (gap between exciter armature and stator) by inserting a
0.010 inch (0.25 mm) feeler gage in the gap and rotating it around the armature diameter to ensure that a
minimum air gap of 0.010 inch (0.25 mm) is available. If the feeler gage cannot be rotated one full
revolution, then check for a "cocked' exciter stator or loose stator mounting capscrews. Refer to Chapter 5
Using the barring mechanism built into the engine flywheel housing, (see figure 3-2 of the Operator and
Organizational Maintenance Manual), bar the engine-generator assembly through at least one full
revolution to verify engine-generator freedom of rotation. If binding is discovered, then the alignment
procedure was performed incorrectly or the engine or generator or both have been improperly assembled.
Check the exciter air gap again in accordance with step (35), above.
Install generator cable exit enclosure (4, Figure 2-8) with hexagon head capscrews (5) and lockwashers
Install conduit box cover on rear of generator. See Figure 2-7.
Install the air cleaner assemblies in accordance with paragraph 4-74 of the Operator and Organizational