TM 55-1510-222-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
b. Record the time required for
N1 to reach 93.5%.
c. Left power lever - Immediately
retard to IDLE as N1 passes
through 93.5%. Acceleration
time should be 2.5 to 4.0 sec-
onds.
*6. Engine high idle speed - Check 71
to 73% N1.
E2,3,5
*7. Brake deice system - Check as fol-
a. Left bleed air valve switch -
PNEU & ENVIRO OFF.
b. Right bleed air valve switch -
OPEN.
c. Brake deice switch - Turn on
and observe that the BRAKE
DEICE ON light is illuminated.
d. Pneumatic pressure gage -
Check for a momentary pres-
sure decrease.
e. Repeat procedure for opposite
bleed air valve.
*8. N1 speed switch (air conditioning)
- Check as follows:
a. Right engine propeller lever -
FEATHER.
b. Right engine condition lever -
LOW IDLE.
c. Cabin temperature mode selec-
tor switch - MANUAL COOL.
d. Right engine condition lever -
Advance to increase N1 to
above 64%.
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