TM 55-1520-240-T
4-4.4
ENGINE START AND IGNITION SYSTEM OPERATIONAL CHECK
4-4.4
INITIAL SETUP
References:
Applicable Configurations:
TM 55-1520-240-23
Without 74
Equipment Condition:
Tools:
TM 55-1520-240-23:
None
Battery Connected
Materials:
Electrical Power On
None
Hydraulic Power On
Engine Start and Ignition System Visual Check
Personnel Required:Performed (Task 4-4.3)
Medium Helicopter Repairer
Army Rotary Wing Aviator (2) '
TASK
RESULT
1.
Check that ENGINE NO. 1 IGN and START & TEMP
If IGN or START & TEMP circuit breaker (1 or 2) is open,
circuit breakers (1 and 2) are closed.
close it. If IGN circuit breaker opens again, go to task
4-4.5. If START & TEMP circuit breaker opens again, go
to task 4-4.6.
2.
Check that ENGINE NO. 2 IGN and START & TEMP
If IGN or START & TEMP circuit breaker (3 or 4) is open,
circuit breakers (3 and 4) are closed.
close it. If IGN circuit breaker opens again, go to task
4-4.7. If START & TEMP circuit breaker opens again, go
to task 4-4.8.
3.
Press and release ENGINE 1 STARTER ON light (5).
Light (5) shall momentarily come on. If it does not light, go
to task 4-4.9.
4.
Press and release ENGINE 2 STARTER ON light (6).
Light (6) shall momentarily come on. If it does not light, go
to task 4-4.10.
CHECK NO. 1 ENGINE START AND IGNITION SYSTEM
5.
Have pilot motor No. 1 engine.
ENGINE 1 STARTER ON light (5) shall come on. NO. 1
ENGINE gas producer tachometer (7) shall indicate 10 to 15%.
If ENGINE 1 STARTER ON light does not come on, go to task
4-4.9. If NO. 1 ENGINE gas producer tachometer does not
indicate 10 to 15% N1, go to task 4-4.11.
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