Lincoln Electric MAGNUM PCT125M - Manual (Page 14)

C-3 MAINTENANCE C-3
9. Untape and remove the insulation.
10. Separate the torch head from the cable using two
5/8" open end wrenches.
11. Replace the torch head or cable assembly as fol-
lows:
a. To replace the torch head, remove the fitting
from the old torch head by using a 5/8" open
end wrench and a 7/16" open end wrench.
Discard the old torch head and obtain a new
torch head. Place the fitting on the new torch
head and tighten with the wrenches.
b. For replacing the cable assembly, slide the
insulating tube, barrel, strain relief and boot off
of the old cable. Obtain a new cable and dis-
card the old cable. If the boot becomes sepa-
rated from the strain relief, insert the boot under
the fingers of the strain relief before sliding the
parts onto the new cable. Slide the following
parts on to the new cable in this order: Boot and
strain relief, barrel, insulating tube.
12. Assembly the torch head to the cable and tighten
the fittings using two 5/8" open end wrenches.
13. Attach the insulation sheet as follows:
a. Use a piece of electrical tape to attach the insu-
lation to the fitting. Center the insulation so that
all of the fittings and the hose clamp will be
completely covered.
b. Tightly wrap the insulation sheet around the fit-
tings and underneath the stem for the pilot con-
nection of the torch head. Secure the insulation
in place with two pieces of electrical tape.
14. Assemble the leads from the cable to the torch
head per the following diagram. It is not important
which side of the torch head the red and the white
lead mount.
PLASMA TORCH