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A
737-300/400/500MAINTENANCE MANUAL
RECOMMENDED AIR PRESSURE (PSI) TUBE WALL
ALUMINUM STEELTOOL NO.
SIZE THICKNESS 6061-T6 AISI 304-1/8 HARD
3/16  0.020-0.035  ST878D-3-035 ST878D-3-020  22.5  30.0 
1/4  0.020-0.035  ST878D-4-020 ST878D-4-035  27.5  40.0 
5/16  0.020-0.035  ST878D-5-020 ST878D-5-035  30.0  40.0 
3/8  0.020-0.035  ST878D-6-020 ST878D-6-035  30.0  52.5 
1/2  0.028-0.035  ST878D-8-028 ST878D-8-035  42.5  75.0 
5/8  0.028-0.083  ST878D-10-028 ST878D-10-083  50.0  80.0 
3/4  0.020-0.049  ST878D-12-020 ST878D-12-049  52.5  85.0 

NOTE: ALL DIMENSIONS ARE IN INCHES.
Preset Pressures (PSI) for the Cherry G-85 Lockbolt Gun
with ST878D Presetting Tool Assembly (BACS13AP Sleeves)
Figure 818 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

AFTER PRESET BY HAND

Preset by Hand with Preset Tool ST879A
Figure 819

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L10596
A 737-300/400/500MAINTENANCE MANUAL
SLEEVE BOW

TUBE END DEFORMATION
MAKE SURE THE ID DOES NOT DECREASE MORE THAN 0.005 INCH AFTER PRESET OR 0.015 INCH AFTER YOU TIGHTEN MANY TIMES.
Properties of Preset BACS13AP Flareless Sleeve/Tube End Figure 820

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

737-300/400/500
MAINTENANCE MANUAL

NOTE: ALL DIMENSIONS ARE IN INCHES.
HAND PRESETTING FLARELESS FITTINGS - NO MANDREL
(STEEL TUBING)
TABLE A

 

NOTE: ALL DIMENSIONS ARE IN INCHES.

Displacement Turns and Torque Values for Hand Preset of Flareless Sleeves
Figure 821

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L10608
A
737-300/400/500MAINTENANCE MANUAL
NUT
POSITIONING TAPE
POSITIONING TAPE COUPLING
TUBING
SLEEVE
UNION
POSITIONING
H-COUPLING
TAPE (BEFORE INSTALLATION) NUT
CLEARANCE BETWEEN SLEEVE AND COUPLING IS 0.015 INCH MAXIMUM
COUPLING
TUBING
SLEEVE
UNION  NUT SIDE COUPLING SIDE
+0.000
0.90
A POSITIONING -0.030
TAPE 0.23
INDEX LINE
H-COUPLING
MAXIMUM
(INSTALLED, TIGHTENED)
CLEARANCE
0.56
0.56
TAPE MIN
TAPE
MIN
TUBE SIZE DIMENSION A
1.440
04 THRU 10 0.375
1.740 (MAXIMUM 12 THRU 16
MARKING
MARKING
DAMAGE
DOT
DOT
AREA)
0.675 MAXIMUM
NOTE: USE THESE DIMENSIONS TO FIND DIMENSION C.C
ALL DIMENSIONS ARE IN INCHES.
(REF)
H-Coupling Installation
Figure 822

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