Ignition Exciters
Figure 401/TASK 74-11-10-991-300
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(2) Disconnect the ignition lead (140), (130) from the ignition lead connector (40), (120) on the aft side of the ignition exciter (50), (110).
(3) Put blanking caps on the disconnected electrical connectors. Subtask 74-11-10-020-054
B. Remove the nuts (20) and the washers (30) as follows:
(1) Do not let the stud (10) turn in the resilient mount (150). Hold the stud (10) with an open-end wrench. The stud flats (160) are located on the resilient mount (150) and the ignition exciter (50), (110).
(2) Remove the nuts (20) and the washers (30). Hold the stud (10) by the flats (160) and turn the nuts (20).
(3) Remove the ground straps (80) located at the forward end of the ignition exciter (50), (110).
(4) Remove the ignition exciters (50), (110).
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TASK 74-11-10-400-002
Installation of the Ignition Exciter (4000JH1, 4000JH2)
R WARNING : BE SURE EXCITERS ARE DE-ENERGIZED FOR AT LEAST 5 MINUTES BEFORE
_______ R WORKING ON THE IGNITION SYSTEM. VOLTAGE OUTPUT CAN BE DANGEROUS. DO R NOT TOUCH THE ELECTRICAL CONTACTS, EXCITERS MAY CONTAIN AN ELECTRICAL R CHARGE EVEN WHEN THEY ARE NOT ENERGIZED.
R
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific soft-nose pliers
No specific warning notice
No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2101 USA MIL-T-5544
graphite grease (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors
71-13-00-410-040 Closing of the Fan Cowl Doors
74-00-00-710-043 Operational Test of the Ignition System
74-11-10-991-300 Fig. 401
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Subtask 74-11-10-860-051
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2).
Subtask 74-11-10-010-057
B. Make sure that the fan cowl doors are open: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
Subtask 74-11-10-865-058
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU ENGINE/1 AND 2/IGN/SYS A 1JH A03
FOR 1000EM1 121VU ENGINE/IGN/ENG1/SYS B 3JH1 P41 121VU ENGINE/IGN/ENG1/SYS A BAT 2JH1 P39
FOR 1000EM2 121VU ENGINE/IGN/ENG2/SYS B 3JH2 P42 121VU ENGINE/IGN/ENG2/SYS A BAT 2JH2 P40
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