A320飞机维护手册 AMM IGNITION 点火(21)

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R R R  - Cracked or chipped ceramic insulator. 
R R  - Thread damage. 
R R R 
R R R 
R 
R  PRE SB 74-002 
R R  - Damage to caged spring assembly. 
R R R  - Damaged or missing white silicone seal. 
R R R R  NOTE: The white and blue silicone seals are not interchangeable. 
R  POST SB 74-002 
R R R  - Damage to captive spring assembly. 
R R  - Damage or missing blue silicone seal. 

Not serviceable.
Less than 30 percent of first thread is damaged.
Less than 10 percent of second thread is damaged.
Damage is more than the above limits.
Not servceable.
Not serviceable.
Not serviceable
Not serviceable.
Repair lead (Ref. TASK 74-21-10-300-006).
Chase the threads.
Chase the threads.
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Repair the lead (Ref. TASK 74-21-10-300-006).
Repair the lead (Ref. TASK 74-21-10-300-006).
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Repair the lead (Ref. TASK 74-21-10-300-006).
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R R R R  NOTE: The white and blue silicone seals are not interchangeable. 
R R R  4. Type 3 and 4 igniter lead braided conduit for: 
R R R  - Chafing along the entire length of the ignition lead. 
R R R R  - Broken strands. 
R R R R 
R R R R 
R R R 
R R R  - Braze joint separation. 
R R  - Sharp bends. 

Not serviceable.
Less than half of the circumference by 25.4 mm (1.0000 in.) in length is permitted.
Less than 25.4 mm (1.0000 in.) in length within any 76.2 mm (3.0000 in.) of lead.
Total damage can not be more than 10 percent of the total length of the lead.
No damage to conduit under the strands.
Not serviceable.
Maximum 152.4 mm (6.0000 in.) bend radius.
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Replace lead (Ref. TASK 74-21-10-000-002) and (Ref. TASK 74-21-10-400-002).
Reposition the lead to eliminate sharp bend.
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R 5. Type 3 and 4 cooling R shroud for :
R A. Obstruction at exit holes.
R 6. Type 3 and 4 ignition R lead chafe guard for
R :
R R - Cuts and/or tears. R R Subtask 74-21-10-420-059
Not serviceable.  Remove the obstruction.
Not serviceable.  Repair lead (Ref. TASK 74-
21-10-300-007). 

R D. Connect the right ignition lead connector (Ref. TASK 74-21-10-400-002).
 5. Close-up
________
 Subtask 74-21-10-410-055
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Close the thrust reverser doors: (Ref. TASK 78-36-00-410-040). FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 Subtask 74-21-10-440-052
 B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
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 C. Close Access
 (1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR

 (2) Remove the warning notice(s).

 Subtask 74-21-10-865-059
 D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1JH FOR 1000EM1 2JH1, 3JH1 FOR 1000EM2 2JH2, 3JH2
　
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