• The CAU range, if more than one wire is to be terminated.
NOTE: Refer to Subject 20-30-22 if more than one wire is to be terminated.
(2) Make a selection of a crimp tool from Table 53 or Table 54.
(3) If the crimp tool basic unit is a power pump, adjust the pressure to make it satisfactory for the
crimp tool head. Refer to Table 41.
WARNING
IF THE PRESSURE OF THE POWER PUMP IS MORE THAN THE
MAXIMUM PRESSURE PERMITTED FOR THE CRIMP TOOL HEAD, AN
INJURY TO PERSONNEL CAN OCCUR.
CAUTION
IF THE PRESSURE OF THE POWER PUMP IS MORE THAN THE
MAXIMUM PRESSURE PERMITTED FOR THE CRIMP TOOL HEAD,
DAMAGE TO THE CRIMP TOOL HEAD CAN OCCUR.
(4) Remove the necessary length of the insulation from the end of the wire.
Refer to Subject 20-00-15 for the insulation removal procedures.
To attach one AWG 24 wire to a terminal lug with a 22-18 size crimp barrel, remove twice the
length of insulation and fold back the conductor.
Make sure that:
• When the wire is in the terminal lug, and the end of the wire insulation is in the insulation
grip of the terminal lug, the end of the conductor extends farther than the end of the crimp
barrel
• The clearance from the end of the conductor is sufficent for the installation of the washer
and the nut
• The conductor does not have nicked or cut strands
• If the insulation is removed by the application of heat, the conductor has not moved from the
center of the wire
• If the insulation is removed by the application of heat, the remaining insulation does not
have blisters or evidence of overheating
• The remaining insulation is not frayed.
(5) Put the conductor of the wire in the crimp barrel of the terminal lug.
Make sure that:
• All of the strands of the conductor are in the crimp barrel
• The end of the conductor extends farther than the end of the crimp barrel
• If the terminal lug has an insulation grip, the end of the wire insulation is in the insulation
grip of the terminal lug
• If the terminal lug does not have an insulation grip, the maximum distance from the end of
the wire insulation of a single wire to the end of the crimp barrel is 0.12 inch for AWG 10 and
smaller, and 0.25 inch for AWG 8 and larger
• The clearance from the end of the conductor is sufficent for the installation of the washer
and the nut.
ASSEMBLY OF INSULATED AND UNINSULATED TERMINAL LUGS
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-11
Page 59
Oct 15/2017D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details
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