TM
5-3431-203-15
(9) Refer to figure 4-13 and remove
(5) Install the f i l t e r reactor (para 4-
29).
the main transformer.
(6) Install the rectifier assembly (para
b. Installation.
4-23).
(1) Refer to figure 4-13 and install the
main transformer.
(7) Install the control rectifier (para 4-
(2) Install the switching panel (para 4-
22).
28).
(8) Install the control panel (para 4-
transformer
(3) Install the accessory
16).
(9) Install the welding machine top and
(4) Install the tiesla coil (para 4-31).
housing (para 3-26).
Section X. WIRING HARNESS AND HIGH FREQUENCY PANEL
WIRING HARNESS
4-35. General
disconnect each end of the wire from the com-
The welding machine has a wiring harness
ponent or components to which it is con-
separate from the high frequency panel. The
nected. Touch the test probes of a multime-
t w o separate wire groups are connected
ter to each end of the wire. If continuity is
through a quick-disconnect type plug, to com-
not indicated, the wire is defective and must
plete the electrical circuits.
be repaired or replaced (c and d below).
4-36. Wiring and Wiring Harness
c. Repair. Shave the insulation on the
a. Removal.
wire to expose one-half inch of bare wire at
both ends of the break. Twist the bare wire
(1) Remove the welding machine top and
together and solder the connection.
Cover
housing (para 3-26).
the repaired break with electrical tape. Do not
(2) Remove the high frequency panel as-
leave any bare wire exposed. If a terminal lug
sembly (para 3-27).
is damaged, or breaks off a wire, replace it
(3) Remove the harness wires from the
using an exact duplicate terminal lug.
polarity switch (para 4-19).
(4) Remove the wires from the control
d. Replacement. Replace a wire by discon,-
rhelostat (para 4-20).
necting it from the component or components
(5) Remove the wines from the remote
to which it is connected and remove the
receptacle (para 3-38).
wire. Install a new wipe and connect it to the
(6) Remove the thermostatic
switch
component or components. If a broken wire
is part of a wiring harness, disconnect the wire
(7) Remove the wires from the control
at both ends and tape the ends with electrical
rectifier (para 4-22).
tape. Install a new wire and attach it to the'
(8) Remove the harness wires from the
exterior of the wiring harness.
accessory transformer (para 4-32).
e. Installation.
(9) Remove the wires from the contactor
(1) Place the wiring harness in the weld-
ing machine and tape it to the frame.
(10) Remove the red and purple wires
(2) Install the quick-disconnect receptacle
from the switching panel (para 4-
on the control panel (para 4-16).
28).
(11) Remove the quick-disconnect recep-
(3) Connect the red and purple wires to
the switching panel (para 4-28).
tacle from the control panel (para 4-
(4) Connect the wines to the contactor
16).
(12) Remove the tape which secures the
(5) Connect harness wires to the acces-
harness to the frame and remove the
sory transformer (para 4-32).
harness.