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R  releases). 
R  (q) Remove the assembly from the crimping tool. 
R  (r) Do the same operation for the other end of the sleeve from step 
R  (m). 
R  (s) Do a check to make sure that the sleeves are in the correct 
R  position. 
R  (t) Do the same operation for the other wires of the cable from step 
R  (f) (the splices must be staggered). 
R  (u) Turn the solder sleeve when you engage it on the screened sleeve 
R  so that it does not catch on the strands. 
R  (v) Center the solder on the screened sleeve and shield. 
R  (w) Heat the center of the sleeve (do not turn the assembly when you 
R  do this) until the sleeve shrinks (the solder ring melts and 
R  flows into the strands of the screened sleeve and shield). 
R  (x) Let cool for a few seconds. 
R  (y) Do the operation again for the other side from step (u). 
R  (z) Install the heat-shrink sleeve. 
R  (aa) Shrink the sleeve.
R  ____NOTE : PTFE requires a minimum temperature of 327 deg.C (620.60 
R  deg.F) for the shrinking. At level of the two solder 
R  sleeves, it is necessary to prevent overheat of the 
R  solder.

 

R 
R  B. Allocation Table of Heat-Shrink Repair Sleeves 
R  (Ref. Fig. 009, 010, 011)
 The table that follows gives the different types of sleeves that you can
 use for repair, in relation to the type and gauge of the cable (Refer to
 chapter 20-42-12 for SLEEVE SHRINKING PROCEDURE).
 ____NOTE : Make sure you use the correct sleeve for the aircraft temperature
 zone. 
R 
R  C. Allocation Table of Solder Repair Sleeves 
R  (Ref. Fig. 012, 013) 
R  The tables that follows gives the size of solder sleeves that you can use 
R  for repair, in relation to the type and gauge of the cable (Refer to 
R  chapter 20-42-12X for SLEEVE SHRINKING PROCEDURE).
 ____NOTE : Make sure you use the correct sleeve for the aircraft temperature
 zone. 
R  D. Allocation Table of Repair Splices 
R  (Ref. Fig. 014) 
R  The table that follows gives the different types of splices you can use 
R  for repair, in relation to the type and gauge of the cable (Refer to 
R  chapter 20-43-1X for SPLICE CRIMPING PROCEDURE).
R  ____NOTE : Make sure you use the correct sleeve for the aircraft temperature 
R  zone.
R  ____NOTE : For more data, refer to 20-53-29 GENERAL REPAIR PROCEDURE.

 

R Repair Sleeves for Unscreened Low-Temp Cables - Allocation Table R Method 4B only R Figure 009

20-53-25 Page 17

R Repair Splices - Allocation Table R Method 2B only R Figure 010

20-53-25 Page 18

R Repair Sleeves for Aluminum Feeder Cables - Allocation Table Method 4B only
R Figure 011

20-53-25 Page 19

R Solder Repair Sleeves - Allocation Table R Methods 2C/2E Only R Figure 012

20-53-25 Page 20

R Solder Repair Sleeves - Allocation Table R Methods 2C/2E Only R Figure 013

20-53-25 Page 21

R Repair Splices - Allocation Table R AD, QP, YU and YV R Figure 014

20-53-25 Page 22

 ___________________________________________________________
REPAIR OF FIRE-RESISTANT CABLES - DESCRIPTION AND OPERATION
 _______
1. General This chapter gives the technical requirements for repair of the cables:
 -
Fire-Resistant Cable with Glass Fiber Braid External Insulation This cable installed on aircraft has P/N: NSA935132 DJ

 -
Fire-Resistant Cable with PTFE Tape External Insulation
 These cables installed on aircraft have P/Ns:
 ABS0053 PL

 

R E0437 or EN2346-003A DL
 ______________________2. Damage Check Procedure
 A. Fire-Resistant Cable with Glass Fiber Braid External Insulation
 (1)
 Cable layout
 (Ref. Fig. 001)

 (2)
 Table for damage assessment
 (Ref. Fig. 001)

 

 B. Fire-Resistant Cable with PTFE Tape External Insulation
 (1)
 Cable layout
 (Ref. Fig. 002)

 (2)
 Table for damage assessment
 (Ref. Fig. 002)

 

 ________________3. Repair Procedure
 A. Procedure (Ref. Fig. 003, 004) This paragraph gives the general description and conditions of application for each repair type.
　
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