TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
a. Right engine condition lever -LO IDLE.
b. Cabin temperature mode selector switch
- MANUAL COOL.
c. Right engine condition lever -Advance to
increase N1 to 57 to 63%. AIR COND N1
LOW light should extinguish.
d. Air conditioning compressor should turn
on
8
to
12
seconds
after
light
extinguishes, as indicated by sustained
increase in TGT on right engine.
*9. Pneumatic pressure - Check as follows:
a. Condition levers - HIGH 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 fail lights - Check
illuminated.
i. Left bleed air valve switch -OPEN. Check
L BL AIR OFF
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