(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 358-307
(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.
(g)
Unclamp the nut. Remove the tube and die from the holder. Open the die to show the preset sleeve.
S 358-308
(2) To preset the sleeve by hand do the following:
(a)
Use the correct mandrel for the preset tool ST879A (Fig. 819).
(b)
Lubricate the threads, sleeve shoulder, and conical seal area of the fitting. Do not lubricate the tube.
(c)
Assemble the sleeve on the tube. Insert the tube into the tool ST879A union. Tighten the nut as shown in Fig. 821.
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747-400 MAINTENANCE MANUAL
(d) If the ST879A preset tool is not available, you can preset the sleeves with a carbon steel union and nut as shown in procedure A or B of Fig. 821.
S 228-309
(3) After you preset, make sure the BACS13AP sleeve and tube joint have the following properties (Fig. 820):
(a)
Corrosion resistant steel tubing (MIL-T-6845):
Make sure the sleeves have a maximum of 0.005 inch longitudinal end play. Make sure the sleeves do not turn freely on the tube under finger pressure (without the use of force).
(b)
Annealed corrosion resistant tubing (MIL-T-8504 and MIL-T-8808) and aluminum alloy tubing (MIL-T-7081 or WW-T-700/6):
Sleeves can have 0.015 inch maximum longitudinal end play and turn on the tube under finger pressure.
(c)
These conditions apply to all tubing materials: 1) Make sure the tube inner diameter does not decrease more than 0.005 inch (Fig. 820). 2) Make sure the sealing surface of the sleeve bow is free of scratches, marks, or other defects.
3) The tube end is permitted to flare if the flare diameter does not prevent entrance of the MS21902 or MS21924 union into the MS flareless fitting end.
TASK 20-11-05-408-310
7. Install the CRYOLIVE Flareless Sleeve Assembly (Fig.______________________________________________832)
A. General
WARNING: DO NOT USE CRYOLIVE FLARELESS SLEEVE ASSEMBLIES ON ANY OXYGEN
_______ LINES OR ON FLUID LINES INSIDE THE FIRE ZONES ON ENGINES OR APU'S. DAMAGE TO EQUIPMENT OR INJURY TO PERSONS CAN OCCUR. THE CRYOLIVE FLARELESS SLEEVE ASSEMBLY IS NOT QUALIFIED FOR THESE APPLICATIONS.
WARNING:_______USE EXTREME CAUTION WHEN USING LIQUID NITROGEN. THE TEMPERATURE OF LIQUID NITROGEN IS 320 DEGREES BELOW ZERO. PROVIDE PROPER VENTILATION AS LIQUID NITROGEN VAPORS CAN DISPLACE OXYGEN IN CONFINED AREAS. USE SAFETY GLASSES, A FACE SHIELD, AND INSULATED GLOVES WHEN USING LIQUID NITROGEN. MISSUSE OF LIQUID NITROGEN CAN CAUSE INJURY TO PERSONS.##
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A
747-400
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