d.Disconnect the trigger lead
e.Disconnect the electrode lead using a 9/16” open- end wrench to remove the
brass adaptor fitting attached to the bulkhead connector.
f.Disconnect the pilot lead by removing the wing nut marked PILOT. Remove only the pilot lead. Do not remove any of the leads below the brass nut.
g.Detach the strain relief clamp wrapped around the trigger lead, electrode lead, and pilot lead from the bolt to which the strain relief clamp is attached. Do not remove the strain relief clamp from around the three leads.
h.Pull the trigger lead, electrode lead, and pilot lead bundled in the strain relief clamp out of the machine through the rubber boot.
4.Move the torch cable assembly to a convenient work area.
5.Remove the three Phillips head screws holding the torch handle together.
6.Unplug the red and white safety leads in the torch head.
7. Remove the tape and insulation carefully. Save the tape and insulation to
during assembly. The
insulation is extremely important because of the high voltages present in the torch head during operation.
8.Loosen and remove the brass compression nut closest to the torch head. Use fi” (13mm ) wrench to loosen the brass compression nut. Support the brass nipple while turning the nut.
9.Install replacement torch head in reverse order of removal.
a.Tighten the brass compres- sion nut to 75 in/lbs.
b.
c.Reconnect the red and white safety circuit leads.
d.Insert the trigger and cable assembly into the torch handle making sure that the hole on each side of the cable strain relief lines up with the tabs in the torch handle sides.
e.Replace the three Phillips screws.