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Page Title:
ENGINE COMPRESSOR SURGES (STALLS) (LOUD POPPING NOISE HEARD FROM ENGINE)-continued |
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 TM9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
d . E N G I N E - CONTINUED
(2) ES-18. ENGINE COMPRESSOR SURGES
(STALLS) (LOUD POPPING NOISE
HEARD FROM ENGINE). - CONTINUED
I
3
CONTINUED FROM STEP
1
4 A. Remove forward engine module
B. Visually inspect turbine
rotor blades (1) and nozzle
vanes (2) for damage as
l i s t e d below:
NOTE
Measurements in this
step
are
approximate.
Burnt or broken blades
(1).
Z Melted metal deposits on
blades (1).
Z No more than four vanes
(2) shall have burns or
breaks on edge (3) wider
than l/4-inch and deeper
than 1/8-inch.
Z Check for cracks (4)
longer than 7/16-inch
where vanes (2) connect to
shrouds (5, 6).
Are blades and vanes OK?
I
A.
Replace forward engine
module (page 5-18).
B. Verify problem is
solved.
CONTINUED ON NEXT PAGE
3-146
Change 5
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