TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
e. Repeat procedure for right propeller.
*5. Engine acceleration - Check as fol-
E2,12
lows:
a. Left power lever - Set 64% N1, then
rapidly move lever to maximum.
b. Record the time required for N1 to reach
93.5%.
c. Left power lever - Immediately
E11
retard to IDLE as N1 passes through
93.5%. Acceleration time should be 2.5
to 4.0 seconds.
*6. Engine high idle speed - Check 70
E1
to 73% N1.
*7. Brake deice system - Check as follows:
a. Power - Set 70% N1.
b. Left bleed air valve switch -PNEU &
ENVIRO OFF.
c. Right bleed air valve switch -OPEN.
d. Brake deice switch - Turn on and
observe that the BRAKE DEICE ON light
is illuminated.
e. Pneumatic pressure gage -Check for
a momentary pressure decrease.
f. Repeat procedure for opposite bleed air
valve.
*8. N1 speed switch (air conditioning) - Check as follows:
2-27
