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Page Title: AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLI...
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TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
(10) ES-10. AGB GEAR TRAIN TURNS
a. ACCESSORY GEARBOX (AGB) AND
HIGH PRESSURE COMPRESSOR -
UNEVENLY (BINDS) WHEN TURNED BY
CONTINUED
HAND, RUBBING OR BINDING IS
FELT WHEN TUBEAXIAL FAN
BLADES OR LEFT COOLING FAN
BLADES ARE TURNED BY HAND AND
THERE ARE METAL CHIPS IN THE
OIL PUMP TO OIL COOLER FLUID
FILTER. - CONTINUED
CONTINUED FROM STFP 11
12
Check rotation of power turbine
in rear engine subassembly (1)
by turning shouldered shaft (2)
clockwise. Shaft should turn
smoothly and no unusual noises
should be heard.
Does shaft turn smoothly with no
unusual noises?
A. Inspect splined coupling (3)
for evidence of damage. If
damaged, replace number
12 bearing and splined
coupling (page 5-124).
B. Replace number 10 bearing
C. Clean AGB (page 7-46).
D. Replace engine oil pump
(TM 20-1).
E. Replace engine oil cooler
(TM 20-1).
F. Replace engine AC
generator (TM 20-1).
G. Clean cooler and generator
lines (TM 20-1).
H. Verify problem is solved.
A. Replace engine assembly
B. Verify problem is solved.
END OF TASK
Change 6
3-95

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