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Page Title:
ENGINE COMPRESSOR SURGES (STALLS) (LOUD POPPING NOISE HEARD FROM ENGINE)-continued |
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 TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
d. ENGINE - CONTINUED
(2)
ES-18. ENGINE COMPRESSOR SURGES
(STALLS) (LOUD POPPING NOISE HEARD
FROM ENGINE). - CONTINUED
Do not lean or hang anything on
shaft (1). Damage to bearing,
seal, or air seal may result.
Check second turbine nozzle vanes
(2) for damage as listed below:
Check edge of vanes (2) for
cracks (3) longer than 1/4-inch.
Check edges (4) where vanes
(2) connect to shroud (5), for
wear (8) deeper than 3/32-inch.
Check both edges of vanes
(2) for cracks (7) that could
meet and cause loss of material.
Check vanes (2) where they
connect to shrouds (5,8), for
cracks (9) Ionger than 7/16-inch.
Check edge of vanes (2) for
burns (10) that exceed the
limits shown in Table A.
Are second turbine nozzle vanes OK?
A. Replace low pressure
nozzle (page 6-92).
Install forward engine
module (page 5-13).
B. Verify problem is solved.
CONTINUED ON NEXT PAGE
3-152
Change 6
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