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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)
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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)
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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)
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