Check the gap at the 12 o'clock position of the adapter. ' it is still within the acceptable limit of O to 0.015
inch (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 loading plate corner to a flat side of each screw. After installing at least two
hexagon head capscrews and one locking plate, remove the guide pins that were used to pilot the
generator to the engine.
Install cover and screen assembly (3, Figure 2-3) with nuts (1) and screws (2).
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. I 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 (22), above.
Make electrical connections to strip heaters H109 and H110. Refer to paragraph 5-4 and dry the generator
set as required.
Utility power must be available to dry the generator when installed in the generator set.
Reinstall air cleaner assembly in accordance with paragraph 4-74 of the Operator and Organizational
Reinstall the roof panels and ac and dc lights and conduit above the engine and generator in accordance
with paragraphs 4-13 and 4-35 of the Operator and Organizational Maintenance Manual.
Reinstall the battery charger in accordance with paragraph 4-20 of the Operator and Organizational
Reconnect the ac wiring harness (1, Figure 2-8) to the terminal board (2) and the two transformers (3).
Refer to Figure 2-14. Feed the generator leads through the conduit that runs between cabinet B and the
conduit box assembly.
Reconnect the generator ground leads (3, Figure 2-13) to the insulated standoff (4).
Reconnect the generator power leads (1) to terminal posts (2) on the back of the load circuit breaker CB1
See Figure 2-12 and paragraph 4-18 of the Operator and Organizational Maintenance Manual. Reinstall
the cover on the rear of cabinet B.
See Figure 2-8 and install generator cable exit enclosure (4) to generator cabinet with capscrews (5) and
See Figure 2-7 and reinstall the conduit box cover assembly.
Reinstall batteries in accordance with paragraph 39 of the Operator and Organizational Maintenance
Refer to Chapter 13 and perform applicable set tests and inspections after repair or overhaul.