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4.3.
DrIve
Assembly
Maintenance
i~~J .r#~E~-jlft
READ SAFETY
BLOCKS
at start
of
LtT~
~
Section
4
before
proceeding
Turn OFF
and
unplug
unit.
1
Wire
Spool
2
Gun Contact Tube
Cut
welding
wire
off
at contact
tube.
Retract
wire onto
spool
and
secure.
3
Pressure Roll
Arm
4
Cotter Pin
5
Pin
6
Screw
7
Bearing
Remove
bearing
as
shown. Install
new
bearing
and
secure
with
screw,
Reinstall
arm
onto
pin
and
secure
with cotter
pin.
2
8
Screw
9
Drive Roll
Remove drive roll
as
shown.
Use
a
wire brush
to
clean drive roll.
Push drive roll
onto shaft
and
rein
stall
screw
and washers.
10
Wire Inlet
Guide
Remove
guide by pressing
on
barbed
area
or
cutting
off
one
end
near
housing
and
pulling
it
Out
of
hole. Push
new
guide
into hole from
rear
until it snaps in
place.
Thread
welding
wire
(see
Section
2.6).
Close door.
Ref. ST.tSO 193-C
I
ST-155
579
Figure
4-2.
Drive
Assembly
Maintenance
Tools Needed:
_____
_____
-
OM-154 500
Page
7
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