TM 55-1520-240-23-3
4-13
INSTALL POWERPLANT
(Continued)
4-13
FOLLOW-ON MAINTENANCE:
Install engine transmission (if not already installed)
(Task 6-107).
Install engine drive shaft (Task 6-32).
Install engine transmission fairing (Task 4-73).
Install engine air inlet screens (Task 4-76).
Perform operational check of gas producer control
system (TM 55-1520-240-T, without 74 ).
Perform operational check of power turbine control
system (TM 55-1520-240-T, without 74 ).
Close engine side and lower access covers (Task
4-50).
Close engine work platform (Task 2-2).
Perform initial run-up (Task 4-4).
Check powerplant plumbing for leaks.
Perform operational check of engine oil low level
warning system (TM 55-1520-240-T).
Retorque exhaust cone coupling nuts after initial
ground run (Task 4-90).
Perform operational check of engine torquemeter
indicating system (TM 55-1520-240-T).
Perform operational check of PTIT indicating system
and resistance check of the harness assembly (TM
55-1520-240-T, TM 55-2840-254-23 without 74 ,
TM 1-2840-265-23 with 74 , and Task 4-24).
Check forward engine mounts for proper clearance.
Do not exceed 4 flight hours. Torque forward
engine mount adapter bolts (Task 4-35).
Adjust engine droop eliminator variable resistors
(Task 4-118, without 74 ).
Install and rig power turbine control linkage (Task
4-140, without 74 ).
Rig thrust control position transducer assembly (Task
4-154, with 74 ).
Upload DECU with new engine data (Task 4-149,
with 74 ).
Perform operational check of FADEC system (TM
55-1520-240-T, with 74 ).
Depreserve the powerplant (Task 4-159, with 74 ).
Perform P3 leak check (Task 4-159, with 74 ).
Perform operational check of fire sensing indication
system (TM 55-1520-240-T).
END OF TASK
4-117
