S 218-236
(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 228-237
(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 20-10-09-308-238
4. Swage the BACS13BX Flareless Sleeves with the 6633K01 Harrison Roller Swaging_____________________________________________________________________________ Kit___
A. Equipment
(1) Harrison Roller Swage Tube Repair Kit - 6633K01
(Sierracin Harrison)
B. Procedure
S 948-239
(1)
Get the necessary tools as listed in the operating instruction manual supplied with the Harrison Roller Swage Tube Repair Kit.
S 358-240
(2)
Apply the specified torque to the expander mandrel (Fig. 817).
S 228-241
(3)
After you swage, make sure the BACS13BX sleeve and tube agree with the specifications of Fig. 817.
NOTE:____Do not trim the tube after you roller swage. If it is necessary, remove burrs with an approved deburring tool.
S 218-242
(4)
Make sure the seal areas of the sleeves are not scratched or damaged during fabrication. Make sure each seal area keeps the 63 RHR (no annular tool marks) finish specifications of its standard.
S 228-243
(5)
Make sure the die marks on the external skirt and shoulder areas of the sleeves are not more than 0.002 inch in height. Also, make sure the die marks to not touch the nut.
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20-10-09
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 218-244
(6) Make sure the tube inner surfaces at the swage area do not have scratches or marks caused by defective rollers.
TASK 20-10-09-308-245
5. Preset the BACS13AP Flareless Sleeves_____________________________________
A. General
(1) We recommend you pressure preset and do not preset by hand. If you must preset by hand, we recommend you preset some samples first. Then you can preset the section to repair. On samples, cut away the sleeve to make sure the ring cut on the tube makes a circle around the tube circumference and has a depth of 0.002 inch.
B. Equipment
(1)
Cherry Lockbolt Gun used with hand presetting
tool - Model G87D is the preferred tool and
Model G85D is optional (Textron Aerospace
Fasteners, Cherry Div., 1224 East Warner Ave,
Box 2157, Santa Ana, California 92707)
(2)
Presetting tool used with Cherry Lockbolt gun -ST878D
(3)
Hand Presetting tool and holding fixture -ST879A and ST879AF
C. Consumable Materials
(1) D00324 Lubricant - Extreme Pressure,
Anti-Scoring No. 3
D. Procedure
S 358-246
(1) To do the pressure preset with the Cherry, Lockbolt Gun G85:
(a)
Attach the thrust sleeve and die holder to the Cherry Lockbolt Gun.
(b)
Install the mandrel and the preset die (see Fig. 818) in the Cherry Lockbolt Gun.
(c)
Connect the air pressure line and use the correct pressure (Fig. 818). Do several cycles of the Cherry Lockbolt Gun and make sure the pressure is set correctly.
(d)
Assemble the split-clamp die, the clamp nut, and the sleeve. Put the assembly into the die holder.
(e)
Put the B-nut on the tube and make the tube end touch the bottom of the die holder.
(f)
Start the Cherry Lockbolt Gun. Hold the tube in its position while the die installs the sleeve on the tube. Maintain the pressure while you preset the sleeve on the tube.
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