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 TM 55-1510-218-MTF
PROCEDURE TROUBLESHOOTING
REFERENCE
a. Right engine condition Iever -
LO IDLE.
b. Cabin temperature mode selec-
tor switch - MANUAL COOL.
d. Right engine condition lever -
Advance to increase N1 to 57
to 63%. AIR COND N1 L O W
light should extinguish.
e. Air conditioning compressor
should turn on 8 to 12 seconds
after light extinguishes. as indi-
cated by sustained increase in
TGT.
*9. Pneumatic pressure - Check as fol-
lows:
a. Condition Ievers - HlGH
IDLE.
b. Power levers - IDLE.
c. Left bleed air valve switch -
PNEU & ENVIRO OFF.
d Pneumatic pressure - Check 12
to 20 PSI.
e. Left bleed air off light - Check
illuminated.
f. Right bleed air valve switch -
PNEU & ENVIRO OFF.
g. Left and right bleed air off
lights - Check illuminated.
h. Left and right bleed air fall
Iights - Check illuminated.
2-39
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