Lincoln Electric IM646-A Welding System User Manual


 
D-2
MAINTENANCE
D-2
MAGNUM® 400 DUAL PROCEDURE GUNS
CABLE
CONTROL LEAD
(4 CONTROL LEADS)
CABLE
CONTROL LEADS
(4 CONTROL LEADS)
(41.9mm SKIN)
1/4" (6.4mm) SKIN
Figure E.1
Figure E.2
d) Remove gun tube connector from cable by
unscrewing connector nut from gun tube connec-
tor. If the cable inner tube is difficult to remove
from the connector assembly, carefully slit it length-
wise with a knife up to the brass connector.
e) Uncouple the strain relief by pushing its outer
housing toward the middle of the cable. Move the
strain relief and the cable boot toward the middle of
the cable, past the damaged section.
f) For K574 models
Cut off damaged section of cable and strip off the
outer jacket 2.15 inches back. Be careful not to cut
the insulation on the control wires while stripping
jacket. Pull control leads back and trim the
exposed copper and inner tube back .50 inch.
Strip all four control leads .125 inch back and crimp
a new S8053-169 terminal to each lead. Apply
heat shrink tubing or electrical tape to terminals to
prevent electrical contact with other terminals. (See
Figure E.1).
For K1722 models:
Cut off damaged section of cable and strip off the
outer jacket 1.65 inches back. Be careful not to cut
the insulation on the control wires while stripping jack-
et. Strip all four control leads .25 inch back and crimp
a new S19492-2 terminal to both the black lead and
the white lead. Remove the leads connected to the
red and blue control leads from the cutoff cable and
solder these leads to the blue and red leads of the
newly trimmed cable. Insulate connections with heat
shrink tubing or tape. (See Figure E.2).