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Page Title:
AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND AND RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT CO... |
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 TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
a.
ACCESSORY GEARBOX (AGB) AND
(2)
ES-2. AGB GEAR TRAIN TURNS
HIGH PRESSURE COMPRESSOR -
UNEVENLY (BINDS) WHEN TURNED BY
CONTINUED
HAND AND RUBBING OR BINDING IS
FELT WHEN TUBEAXIAL FAN BLADES
OR LEFT COOLING FAN BLADES ARE
TURNED BY HAND. - CONTINUED
CONTINUED FROM STEP 7
NO
YES
A. Inspect splined coupling (3)
for evidence of damage. If
damaged, replace number
12 bearing and splined
coupling (page 5- 124).
B. Troubleshoot transmis-
sion (TM 34-1).
C. Install AGB (page 7-22).
D. Verify problem is solved.
8
A. Remove RGB assembly
B. Check rotation of RGB
assembly (1) by putting
splined shaft (2) in RGB
assembly and turning shaft
(2) clockwise. Shaft should
turn smoothly and no unusual
noises should be heard.
Does shaft turn smoothly with no
unusual noises?
NO
YES
A. Inspect splined coupling (3)
for evidence of damage. If
damaged, replace number
12 bearing and splined
coupling (page 5-124).
B. Salvage Gas Turbine Power
Unit (page 6-63).
C. Install AGB (page 7-22).
D. Verify problem is solved.
CONTINUED ON NEXT PAGE
3-26
Change 6
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