(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 74-21-30-865-058
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------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
Subtask 74-21-30-010-056
C. Get Access
(1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
F 『 EEFF : ALL E Page 60274-21-30
E E Feb 01/98 E E ECES E Subtask 74-21-30-040-053
F 『
E C F M E
E E
E 56-5B E
E E
D. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 74-21-30-010-057
E. Open the thrust reverser doors: (Ref. TASK 78-36-00-010-040)
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR
Subtask 74-21-30-020-053
F. Remove the spark igniter (Ref. TASK 74-21-30-000-002)
4. Procedure
_________
(Ref. Fig. 601/TASK 74-21-30-991-302) Subtask 74-21-30-210-052
A. Do the inspection of Spark Igniter.
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Body for :
- Wear from contact Any amount, 0.030 in.
with the combustion (0.76 mm) deep. No wear
chamber. completely through the
shell is permitted.
- Wear through the No wear is through the
body from internal body is permitted.
arcing.
2. Tip for :
- Distortion. Not serviceable.
Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
Replace the spark igniter (Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
F 『 EEFF : ALL E Page 60374-21-30
E E Feb 01/98 E E ECES E F 『 E C F M E E E E 56-5B E
Inspection of the spark igniter
Figure 601/TASK 74-21-30-991-302
F 『 EEFF : ALL E Page 60474-21-30
E E Feb 01/98 E E ECES E
F 『
E C F M E
E E
E 56-5B E
E E
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
- Electrode loose or missing. Not serviceable. Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
- Tip electrode height in relation to the shell tip. 0.25 in. (6.35) max depth below the tip. Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
- Ceramic material cracked or is missing pieces. Not serviceable. Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
3. Threaded connector end for:
NOTE : Do a borescope inspection of the high pressure turbine rotor when the
____
pin electrodes have missing pieces (Ref. TASK 72-52-00-290-001).
-Dirt/grease in terminal well Not serviceable Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
-Ceramic-cracked or missing pieces. Not serviceable Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002).
-Arcing or erosion on button contact Not serviceable Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002)
-Carbon track on ceramics Not serviceable Replace the spark igniter(Ref. TASK 74-21-30-000-002) and (Ref. TASK 74-21-30-400-002)
F 『 EEFF : ALL E Page 60574-21-30
E E Feb 01/98 E E ECES E
F 『
E C F M E
E E
E 56-5B E
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM IGNITION 点火(39)
