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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 B. Procedure
 S 214-007
 (1)  
Examine the tube ends and fittings for defects or contamination that can have an effect on the seal during installation. Look for rubbed areas and dents on the tube.

 S 644-008

 (2)  
Lubricate the sleeve and fittings.

 S 394-009

 (3)  
Apply the thread compound that is applicable to the system (Table 401). Fully apply the thread compound to the external threads, shoulder, and conical seal surface of the flareless sleeve immediately before installation (Fig. 401).

 NOTE: Do not get thread compound in the internal part of the
____ tube or in the bore of the fitting. Do not apply thread compound when you assemble the dri-lubed B-nuts.
 S 424-010
 (4)  Put the tubing assembly in its position and let the tube clamps stay loose to permit you to align the tube in the fitting.
SLEEVE BOW

CHECK THAT THE REDUCTION OF ID DOES NOT EXCEED 0.015 IN. PRIOR TO INSTALLATION
Maximum Preset Flareless Sleeve Collapse Figure 402
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
OD TUBE DASH NO. TUBING SIZE (INCHES)  USE CARE WHEN YOU SELECT THE CORRECT TORQUE FOR REDUCER FITTINGS. THE BOSS OR BULKHEAD SIZE GIVES THE FITTINGS INSTALLATION TORQUE. NOTE:____ STEEL & TITANIUM TUBES 1 ALUMINUM & ANNEALED CRES TUBES 2 INSTALLATION TORQUE ON FLARELESS TUBING FITTINGS (POUND-INCHES, |5%) 3 4 
3/16 -3  100  80 
1/4 -4  140 110 
5/16 -5  190 140 
3/8 -6  270  170 
1/2 -8  500 280 
5/8 -10  700 360 
3/4 -12  900  450 
1 -16  1200  750 
-201-1/4  1600  900 
-241-1/2  2000  900 
2 -32  2000 ---

TORQUE VALUES APPLICABLE TO THESE TUBE ENDS:
A.21-6-9 CRES AND ALL OTHER CRES TUBE ENDS
WITH BACS13BD, BACS13BX SWAGED SLEEVE AND
21-6-9 CRES TUBE ENDS WITH CRYOLIVE SLEEVE

B.  MIL-T-6845, MIL-T-8504 AND MIL-T-8808 CRES FLARED
TUBE ENDS

C.  MIL-T-6845 CRES WITH PRESET BACS13AP (FLAG NOTE 5) OR CRYOLIVE SLEEVES
D.  HOSE END FITTINGS WITH STEEL INSERTS (NIPPLES)
E.  ALL TITANIUM TUBE ENDS

2 TORQUE VALUES APPLICABLE TO THESE TUBE ENDS:
A.  6061-T6 ALUMINUM WITH BACS13BD OR BACS13BX SWAGED SLEEVES (SIZES 04 THROUGH 16) OR CRYOLIVE SLEEVE ASSEMBLIES (SIZES 04 THROUGH 12)
B.  6061-T6 ALUMINUM WITH PRESET BACS13AP SLEEVES
C.  ANNEALED CRES WITH PRESET BACS13AP SLEEVES

D.  FLARELESS TYPE HOSE END FITTINGS WITH ALUMINUM
INSERTS (NIPPLES)

E.  ALUMINUM FLARED TUBE ENDS
Installation Torque for Flareless Tubing Fittings
Figure 403 (Sheet 1)

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 20-10-51
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 ú  02  Page 407
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

USE CARE WHEN YOU SELECT THE CORRECT TORQUE FOR REDUCER FITTINGS. THE BOSS OR BULKHEAD SIZE GIVES THE FITTING INSTALLATION TORQUE.
TUBE MATERIAL SPECIFICATIONS:
A. 6061-T6 ALUMINUM - MIL-T-7081, WW-T-700/6
B. ANNEALED CRES - MIL-T-8504, MIL-T-8606, MIL-T-8808
C. 1/8 HARD CRES - MIL-T-6845 D 21-6-9 CRES - BMS 7-185
E. TI-3AL-2.5V - BMS 7-234
TORQUE VALUES ARE APPLICABLE TO STANDARD MS FLARELESS TUBE ENDS (BACS13AP SLEEVES) ON MIL-T-6845 (304-1/8 HARD) TUBING WITH A MINIMUM WALL THICKNESS AS GIVEN BELOW:
SIZE  -4  -5  -6  -8  -10  -12 
THICKNESS WALL  0.020  0.020  0.028  0.035  0.049  0.049 

TORQUE FOR SPECIAL THIN WALL MIL-T-6845 (304-1/8h) TUBING IS AS FOLLOWS:

TORQUE VALUES ARE APPLICABLE TO STANDARD MS FLARELESS TUBE ENDS (BACS13AP SLEEVES) OR CRYOLIVE SLEEVES ON 6061-T6 ALUMINUM AND MS FLARELESS TUBE ENDS (BACS13AP SLEEVES) ON ANNEALED CRES TUBING WITH A MINIMUM WALL THICKNESS AS GIVEN BELOW:
　
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