737-300 400 500 AMM 飞机维护手册 STANDARD PRACTICES(152)

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TORQUE (POUND-INCHES)  TORQUE (POUND-INCHES) 
USED NUT NEW NUT  MINIMUM LOCKING  LOCKING MAXIMUM 
BREAKAWAY MINIMUM  LOCKING MAXIMUM  1ST CYCLE MINIMUM BREAKAWAY 
4-48  3  - 2-56  0.2  2.5 
6-40  1.0  6  - 4-40  0.5  5
 8-36  1.5  9  - 6-32  1.0  10
 10-32  2.0  13  - 8-32  1.5  15
 1/4-28  3.5  30  7  10-24  2.0  18
 5/16-24  6.5  60  12  1/4-20  4.5  30 
3/8-24  9.5  80  18  5/16-18  7.5  60 
7/16-20  14.0  100  26  3/8-16  12.0  80
 1/2-20  18.0  150  34  7/16-14  16.5  100
 9/16-18  24.0  200  46  1/2-13  24.0  150
 5/8-18  32.0  300  60  9/16-12  30.0  200
 3/4-16  50.0  400  90  5/8-11  40.0  300
 7/8-14  70.0 135  3/4-10  60.0  400
 1-14  90.0  800 180  7/8-9  82.0  600
 1-12  90.0  800  180  1-8 110.0  800
 1-1/8-12 117.0  900 234  1-1/8-7  137.0  900
 1-1/4-12 143.0 1000 285  1-1/4-7 165.0 1000
 1-3/8-12 165.0  1100  330  1-3/8-6 200.0  1200 
1-1/2-12 195.0  1250  386  1-1/2-6 230.0  1400 
1-3/4-12 245.0  1450  490  1-3/4-5 300.0  1800 
2-12 300.0  1700  600  2-4.5 360.0  2200 
2-1/4-4.5  430.0  2600 
2-1/2-4.5  500.0  3000 

THE FOLLOWING CONDITIONS MUST BE USED FOR TORQUES (REF BPS-N-70):
A.  THE MINIMUM-TO-MAXIMUM TORQUE RANGE IS USED TO FIND THE CONDITION OF A USED SELF-LOCKING NUT AND BOLT SET.
B.  ALL NUT THREADS SHALL BE TOGETHER AND THE COMPLETE CHAMFER ON THE END OF THE BOLT SHALL COME OUT PAST THE NUT. UNCHAMFERED BOLTS MUST COME OUT OF AT LEAST 1-1/2 THREADS PAST THE NUT.
C.  THE REMOVAL WILL BE COMPLETE WHEN THE LOCKING DEVICE IS DISENGAGED.
D.  THE MINIMUM BREAKAWAY TORQUE IS THE TORQUE REQUIRED TO TURN A NUT OR BOLT FROM AN INSTALLED POSITION. THIS CONDITION IS FOR BOLT THREADS WITH NO LOAD ON THE BASE OF THE NUT.
E.  THE MAXIMUM LOCKING TORQUE IS THE MAXIMUM TORQUE DURING THE INSTALLATION OR REMOVAL OF NUTS WITH NO LOAD ON THE BASE OF NUT.
Locking Torque Values for Self-Locking Nuts
Figure 203

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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

Torque for Reduced-Head Bolts
Figure 204

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(INCHES) TUBE OD  MAXIMUMMINIMUM TORQUE (POUND-INCHES) NAS591-593 ALUMINUM ALLOY FITTINGS  MAXIMUMMINIMUM TORQUE (POUND-INCHES) NAS594-596 STAINLESS STEEL FITTINGS 
1 4 3 2 2-1/2 1-1/2 1-1/4  1800 1200 900 900 720 1500 900 600 600 480  4802400 1800 1800 900 600 600  7202700 2100 2100 1200 900 900 

Standard Torque Values for Rigid Tube Coupling Connectors
Figure 205

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
K04207
A 737-300/400/500MAINTENANCE MANUAL
(INCHES) SIZE PIPE THREAD  (POUND-INCHES) MAXIMUM TORQUE (POUND-INCHES) WORKING TORQUE STEEL TO STAINLESS STEEL ALL PIPE EXCEPT STAINLESS  MAXIMUMMINIMUM TORQUE (POUND-INCHES) STEEL PIPE FITTINGS STAINLESS STEEL TO STAINLESS 
　
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