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R 
R  (Ref. Fig. 005, 006, 007, 008, 009, 010, 011, 012, 013, 014, 015, 016, 017, 
R  018, 019) 
R 
R  - Move the selected sleeve horizontally along the coaxial wire and bonding 
R  wire assembly. 
R 
R  - Turn the sleeve as it moves along the bonding wire to make sure that it 
R  does not catch on the strands. 
R 
R  - Center the solder preform on the stripped part of the bonding wire and 
R  shield. 
R 
R  - Install the assembly in the applicable tool but do not turn it. 
R 
R  - Heat the center of the sleeve until the sleeve shrinks :
 the solder ring melts and flows into the strands of the bonding wire and
 shield and the sealing rings melt and flow.
 The collapse of the solder ring does not show solder flow. Continue to
 apply heat until the solder flows into the strands. 
R 
R  - Let it become cool for a few seconds before you handle it. 
R 
R  - Make sure that the solder sleeve is correctly shrunk (Ref. Fig. "Defects
 representation"). 
R 
R  - Do a check : 
R  .that there are no balls of solder, 
R  . correct shrinkage of the sleeve (no flaring), 
R  .that there is no overheating, 
R  .that there is no solder rejection (cable SJ and ST ...). 
R 
R  - Insulation procedure (for wires HG and WC only). 
R 
R  For wire HG (Method F)
 Install the shrinkable sleeve (detail F6).
 Retract the sleeve. 
R 
R  For wire WC (Method G)
 Strip the triaxial wire conductor.
 Install the three shrinkable sleeves (1), (2) and (3).
 Retract the sleeves (1), (2) and (3) (detail G3).
 Attach the two bonding wires with the cable tie (detail G2).
 Install the shrinkable sleeve (4) on the two ferrules.
 Retract the sleeve (4) (detail G4).

 

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 Solder Sleeves - Method "A" : Stripping Characteristics E0160 and NSA937790 R Figure 005

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 Solder Sleeves - Method "A" : Installation E0160 and NSA937790 R Figure 006

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 Solder Sleeves - Method "B" : Stripping Characteristics E0160 R Figure 007

20-42-21 Page 13

 Solder Sleeves - Method "C" : Stripping Characteristics E0160 R Figure 008

20-42-21 Page 14

 Solder Sleeves - Method "B" and "C" : Installation E0160 R Figure 009

20-42-21 Page 15

 Solder Sleeves - Method "D" - Stripping Characteristics E0160 and NSA937790 R Figure 010

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 Solder Sleeves - Method "D" : Installation E0160 and NSA937790 R Figure 011

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 Solder Sleeves - Method "E" : Stripping Characteristics ABS0237 and E0160 R Figure 012

20-42-21 Page 18

 Solder Sleeves - Method "E" : Installation ABS0237, E0160 and NSA937790 R Figure 013

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 Solder Sleeves - Method "F" : Stripping Characteristics E0160 R Figure 014

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 Solder Sleeves - Method "F" : Installation E0160 R Figure 015

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 Solder Sleeves - Method "G" : Stripping Characteristics and Installation E0160 R Figure 016

20-42-21 Page 22

 Solder Sleeves - Method "G" : Insulation E0160 R Figure 017

20-42-21 Page 23

 Solder Sleeves - Defects Representation R Figure 018

20-42-21 Page 24

 Solder Sleeves - Defects Representation R Figure 019

20-42-21 Page 25

 ___________________________________________________
CRIMP SLEEVES, FERRULES - DESCRIPTION AND OPERATION
 _______
1. General
R  Crimp sleeves and ferrules installed on aircraft have the codes that follow: NSA937503 Crimp Sleeve, High Temperature NSA937505 Crimp Sleeve, Low Temperature NSA937504 Ferrule
 _____________2. Crimp Sleeves
 A. NSA937503
 (1)
 P/N identification

 NSA937503 - FB 11 16 | | | |-------------- Maximum diameter | | |----------------- Minimum diameter | |-------------------- Ferrule code |----------------------------- Standard P/N

 (2)
 P/N Characteristics

 (a)
 Temperature Maximum operating temperature is 260 deg. C (500 deg. F).
　
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本文鏈接地址：A320 ESPM Electrical Standard Practices Manual 2(93)