TM 55-1510-215-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
c.
Test switches - TEST.
d.
Cushions - Check as required
(Section IV).
e.
Power levers - Move AFT until
primary pitch or secondary LOW
Pitch STOP lights illuminate.
f.
RPM - Note rise, 170 to 250 RPM.
g.
Test switch - Release (note RPM
increase).
h.
Condition Levers - LOW IDLE.
*20. Propeller reversing - Check as
E3-5
follows:
a.
Propeller levers - HIGH RPM (full
forward).
b.
Condition levers - Low idle.
c.
Power levers - Slowly pull into full
reverse position.
d.
Turbine
tachometers
-
Read.
Maximum N1 must be 82 to 88%.
e.
Propeller
tachometers
-
Read.
Propeller tachometers should read
within 100 RPM of each other.
2-20