12
The
insulating
washer
is
pertinent
to
have
in
place
as
this
helps
prevent
the
gooseneck
from
getting
electrically
charged.
o
Check
the
gas
holes
on
the
diffuser
and
clean
if
necessary.
o
Check
and
tighten
the
contact
tip.
o
Check
all
electrical
connections
including
the
power
cable
from
the
power
supply,
torch/feeder
connections,
and
control
cables
for
loose
connections.
Tighten
if
necessary.
Loose
connections
can
cause
overheating
of
cables
and/or
loss
of
electrical
power.
MAINTENANCE
LINER
REPLACEMENT
Warnings
–
To
avoid
accidental
injury
ensure
power
supply
and
wire
feed
unit
is
turned
off.
1)
Trim
the
end
of
the
weld
wire
at
contact
tip.
2)
Retract
or
completely
remove
weld
wire
so
torch
can
be
removed
from
the
wire
feeder.
3)
Remove
the
nozzle,
contact
tip
and
diffuser.
4)
Loosen
the
set
screw,
DO
NOT
REMOVE,
at
the
torch
feeder
pin
connection
using
a
5/64
”
Allen
wrench.
If
retaining
nut,
remove
and
set
aside.
5)
Making
sure
the
torch
cable
is
straight,
grasp
the
liner
at
the
rear
of
the
torch
with
a
pair
of
pliers
and
remove.
6)
Carefully
feed
the
new
liner
into
the
torch
using
short
strokes
to
avoid
kinking.
You
may
need
to
twist
the
liner
for
easier
insertion.
7)
Tighten
the
set
screw
or
retaining
nut
to
secure
the
liner
in
the
torch.
8)
Reinstall
the
torch
to
the
wire
feed
unit.
9)
IMPORTANT:
at
the
front
end
of
the
torch
push
the
liner
back
into
the
gun
and
hold
to
trim.
10)
Trim
the
liner
to
9/32” (238CA & 347CA) or 13/32
” (354CA & 407CA)
stick
out
from
the
end
of
the
gooseneck.
11)
Replace
the
diffuser,
contact
tip
and
nozzle.
12)
Feed
welding
wire
into
the
torch
and
tighten
drive
rolls.
WARNING:
WHEN
FEEDING
WELD
WIRE
THROUGH
THE
TORCH
KEEP
THE
FRONT
END
OF
THE
TORCH
POINTED
AWAY
FROM
ANY
PERSON
OR
OBJECT.
DO
NOT
POINT
AT
FACE,
HANDS
ETC.
FAILURE
TO
DO
SO
WILL
RESULT
IN
BODILY
INJURY
AND
POSSIBLY
DEATH.
GOOSENECK
REPLACEMENT
1)
Secure
Gooseneck
in
a
vice.
2)
Remove
the
liner
from
the
torch,
see
liner
replacement.
3)
Unscrew
the
spring
from
the
front
handle
and
slide
back
on
cable.