20-50-11
 ALL  ú ú 02 Page 202 ú Mar 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

737-300/400/500
MAINTENANCE MANUAL

USE THE HANDLE EXTENSION ONLY. NO CORRECTION IS NECESSARY.

METHOD II
USE THE ADAPTER WITH THE EXTENSION BETWEEN
THE ADAPTER AND THE WRENCH BOTH IN LINE WITH THE WRENCH. SHOWN TORQUE T :
1
TA
T =

1
A+B
METHOD III
USE BOTH THE HANDLE EXTENSION AND THE ADAPTER, SHOWN TORQUE T :

METHOD IV
METHODS V AND VI ARE NOT RECOMMENDED. IF YOU MUST USE EITHER OF THESE METHODS, OBEY THE FOLLOWING RESRICTIONS THAT FOLLOW:
1.
 THE ADAPTER LENGTH PLUS ANY EXTENSIONS USED BETWEEN THE WRENCH AND THE ADAPTER MUST  BE LESS THAN THE LENGTH OF THE WRENCH.

2.
 WHEN A FORCE IS APPLIED AT 90 |3 DEGREES TO THE HANDLE OF THE WRENCH, IT IS RECOMMENDED THAT YOU USE A STIRRUP-TYPE HANDLE WITH A POINTER (WHICH INDICATES THE ANGLE OF LOAD) TO MAKE SURE THE WRENCH INSTALLS THE NUT AT THE CORRECT ANGLE.

90`. SHOWN TORQUE T :
1
TA

T =  USE THE ADAPTER AT A RIGHT ANGLE TO THE
1
A+B WRENCH. NO CORRECTION IS NECESSARY.
METHOD V  METHOD VI
Torque Wrench Adapter Figure 201 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 20-50-11
 ALL  ú ú 01 Page 203 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 20-50-11
 ALL  ú ú 01 Page 204 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.

WHEN YOU MUST TURN THE HEAD TO INSTALL A BOLT INTO PLATE-NUTS, CLIP-NUTS, BARREL-NUTS, INSERTS, OR TAPPED HOLES, USE THE MAXIMUM TORQUE INDICATED IN THE TABLE FOR THE NUT |10%.
WHEN YOU INSTALL B30LE OR PN BOLTS WITH N10HR NUTS, USE THE INSTALLATION TORQUE SHOWN FOR N10GW NUTS.

BOLTS WITH LUBRICANT INCLUDE DRY-FILM-LUBRICATED (MIL-L-8937) BOLTS AND BOLTS WITH ANTI-FRICTION COMPOUNDS SUCH AS EASE-OFF 990, MIL-C-11796, AND MIL-G-23827 APPLIED TO THE THREADS.WHEN YOU SAFETY FINE CASTELLATED NUTS, TIGHTEN THE NUT TO THE LOW SIDE OF THE TORQUE RANGE SHOWN AND, IF NECESSARY, TIGHTEN THE NUT UNTIL A SLOT ALIGNS WITH THE SAFETY HOLE.
Torque Values for Bolts and Nuts
Figure 202 (Sheet 1)

A 737-300/400/500MAINTENANCE MANUAL
THREAD SIZE  DASH NO. DIAMETER  5 NAS1423 AND NAS509 JAM NUTS  6 ALL OTHER NONSELF-LOCKING JAM NUTS 
TORQUE, INCH-POUNDS  TORQUE, INCH-POUNDS 
MINIMUM TARGET MAXIMUM  MINIMUM TARGET MAXIMUM 
0.1900-32  -3  1 31 0 1 6  1 91 6 22 
0.2500-28  -4  15 18 21  24 27 30 
0.3125-24  -5  30 33 36  46 49 52 
0.3750-24  -6  40 43 46  60 65 70 
0.4375-20  -7  60 65 70  1039893 
0.5000-20  -8  75 80 85  109 116 124 
0.5625-18  -9  85 90 95  128 135 143 
0.6250-18  -10  96 101 106  144 151 159 
0.7500-16  -12  150 158 165  227 237 247 
0.8750-14  -14  210 220 230  315 330 345 
1.0000-12  -16  270 280 290  400 420 440 
1.1250-12  -18  350 365 380  523 548 573 
1.2500-12  -20  430 450 470  705645 675 

JAM NUTS

LOCKWIRED JAM NUTS NON-LOCKWIRED JAM NUTS
Torque Values for Bolts and Nuts
Figure 202 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 20-50-11
 ALL  ú
 ú  02  Page 205
 ú  Nov 12/01 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
M28037
A 737-300/400/500MAINTENANCE MANUAL
TORQUE - SELF-LOCKING NUTS 1 
SIZE  FINE THREADS (REF BPS-N-70)  SIZE  COARSE THREADS (REF MIL-N-25027) 
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：737-300 400 500 AMM 飛機維護手冊 STANDARD PRACTICES(151)