P-8-627-34
T O 35C2-3-442-2
TM-07464A-35 TM 5-6115-457-34
with an approved cleaning solvent and dry
1 0 . Position generator fan on
r e a r of shaft couplings and install
thoroughly.
l o c k i n g plates (6, figre 2-5) and
screws (5). Tighten screws evenly in a
WARNING
c r i s s - c r o s s pattern. Torque screws to
150 foot-pounds. Bend c o r n e r s of lock-
Stay clear of engine during lifting
i n g plates (6) against screws (5) to
operations.
prevent screws from turning.
11. Install screws (9) and was-
6. Position engine in generator set,
hers (10). Tighten screws evenly and to
aligning engine flywheel housing screw
75 foot-pounds torque.
holes with generator frame holes. Install
four screws (9, figure 2-5) and washers
12. Push mounting bolts up
(10), 90 degrees apart.
throught generator mounting holes and
i n s t a l l washer (8) and nuts (7). Hold
7. Raise lifting device so that block
generator mounting b i t s s t a t i o n a r y a n d
tighten nuts (7) to 500-550 foot-pounds
can be removed from under generator.
torque.
Remove block and slowly lower engine in
place so that engine support bolt holes
NOTE
alignment. Secure trunion mount to engine
support with bolts and washers. Make sure
Generator air gap should be 0.125
generator mounting bolts are in alignment
inch for 50/60 hertz generators
with generator mount holes and tighten
and 0.049 inch for 400 hertz gen-
engine mount bolts to 200 foot-pounds
erators.
torque.
13. Check generator air gap using
8. Remove four screws securing
three plastic gauges approximately one foot
generator to engine to permit engine to
long. Equally space gauges and insert
move forward.
gauges through opening between generator
frame and fan. Position gauges between
9. Rotate engine crankshaft using
main stator and main rotor, making sure
suitable engine barring tool on crankshaft
gauges are positioned on high points of
stator pole pieces. Hold gauges stationary
pulley bolt to align flywheel generator shaft
coupling holes with holes in generator shaft
and rotate engine and generator approxi-
couplings. Turn engine crankshaft clock-
mately three revolutions by turning engine
wise (standing in front of engine looking
crankshaft. Remove and inspect gauges.
toward generator). After holes are aligned,
Gauges should not show any signs of
push generator shaft couplings against
interference. If interference is indicated,
engine flywheel, making sure couplings are
generator is defective or engine flywheel is
not concentric.
inside of flywheel recess.
14. Install screen (4) and secure
NOTE
with screws (3), washer (2), and nuts (1).
15. Secure reconnection board as-
Rotate engine crankshaft as re-
quired to gain access to screws.
sembly (20) to skid base and bracket (16)
Change 9
2-15
