747-400 AMM 飞机维护手册 STANDARD PRACTICES - AIRFRAME(23)

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 9)  If you use Rynglok tube to tube unions for repair, refer to "Rynglok Union Installation".
Install the repair section and tighten the nuts (AMM
 20-11-05/401).
When you use a Cryofit Union or H-Coupling in the repair
 section, install it after you tighten the flareless fittings in
 their positions.
When you use a Permaswage union in the repair section, you must
 make allowance for swage growth. Tighten the repair section in
 position after installation of the Permaswage union.
When you replace a tube bend section, make sure you keep the
 minimum straight length specifications for all fittings
 (Fig. 812).
When you use a CRYOLIVE flareless sleeve/coupling nut in
 conjunction with a permanent Cryofit, H-Coupling or Permaswage
 union, tighten the flareless coupling nut hand tight before
 installing the permanent fitting to minimize axial preload on
 the CRYOLIVE sleeve.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 20-11-05
 ALL  ú ú 03 Page 810 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 TASK 20-11-05-308-290
 3. Swage the BACS13BX Flareless Sleeve with the Harrison Elastomer Swagers 5175,
_____________________________________________________________________________ 5570 and 5720 (Fig. 813)
_____________
 A. Equipment
 (1)  
Harrison Portable Swagers - 5175 and 5720
 Harrison Stationary Swager - 5570
 (Sierracin-Harrison - 3020 Empire Ave. -Burbank, California 91504)

 (2)  
"Tiplar" bore gauge or "Mueller" bore gage or
 equivalent

 (3)  
Regulated air pressure (0 - 100 psi)

 B. Consumable Materials
 (1)  D00324 Lubricant - Extreme Pressure,
 Anti-Scoring No. 3

 C. Procedure
 S 948-291
 WARNING: POINT THE TUBE AWAY FROM PERSONS AND EQUIPMENT WHEN
_______ YOU SWAGE. DRAW-BOLTS CAN BREAK AND COME QUICKLY OUT OF THE TUBE. THE DRAW-BOLTS CAN HIT PERSONS OR EQUIPMENT AND CAUSE INJURY OR DAMAGE.
 (1)  
Get the necessary tools as shown in the instruction manual supplied with the Harrison elastomer swager.

 S 648-292

 (2)  
Apply a light layer of antiscoring lubricant to the outer surfaces of the bushings and expanders of the drawbar assemblies. Make sure the tube and sleeve are clean and dry.

 NOTE: Do not let the lubricant go into the grooves of the sleeve.
____ Lubricant in the grooves will prevent correct swaging.
 S 348-293
 (3)  
Apply the specified swage pressure and hold the pressure for a minimum of two seconds. See Fig. 814 for specified pressure.

 S 228-294

 (4)  
Do a check of the groove depth with a Tiplar or Mueller bore gage. See Fig. 816 for groove dimensions.

 S 228-295

 (5)  
Do a check on the external dimensions of the swaged fitting. See Fig. 815.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 03 Page 811 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 228-296
 (6)  
Make sure the tooling die marks on the tube O.D. do not have a height or depth larger than 10% of the tube wall specified thickness. Other permitted defects include marks or scratches on the outer tube which are less than 0.20 inch in length and 0.002 inch in depth.

 S 218-297

 (7)  
Make sure the seal areas of the sleeves and unions are not scratched or damaged during fabrication. Make sure each seal area keeps the usual finish specifications.

 S 228-298

 (8)  
Make sure the tool and die marks on the external skirt and shoulder areas of the sleeves and unions, are not more than 0.002 inch in height. Also, these marks must not touch the nut.

 TASK 20-11-05-308-299
 4.  Swage the BACS13BX Flareless Sleeves with the 6633K01 Harrison Roller Swaging_____________________________________________________________________________ Kit___
　
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