Specifications

1.
Loosen
pressure
adjustment
wing
nut
(item
11,
Figure
2-5) and
pull
downward.
Lift
gear
cover
(2)
up
until it
is
in
an
upright position.
2.
Using
a
1/8
inch
allen
wrench,
remove
shoulder
screw
(3)
and
then
pull
Out
drive
roll
gear
(1).
3.
Insert
replacement
drive
roll
gear
(1)
into
gear
cover
(2)
and
secure
in
place
with
shoulder
screw
(3).
4.
Remove
nylon
hex-nut
(6)
and
drive roll
gear
(7) from
drive shaft
(8).
5. Install
replacement
lower
drive roll
gear
(7)
onto
drive
shaft
(8) and
secure
in
place
with
nylon
hex-nut
(6).
6.
Loosen
securing
screw
(9) and
pull
out
inlet
guide
(10).
7. Install
replacement
inlet
guide
(10)
in
drive roll
assembly
and
secure
with
securing
screw
(9).
3.
Rotate
the
spool
until
the
guide
hole
in it
aligns
with the
guide
pin
on
the
hub (7). Slide
the
spool
onto
the hub (7)
until it
seats
against
the back
side of
the
hub
(7).
4. Place
the
spool
retaining
spring
(6)
on
the
hub
(7)
making
sure
that it
seats
tightly against
the
wire
spool.
2-10.
FOUR
INCH
SPOOL
TYPE
WELDING
WIRE
IN
STALLATION
(70A
Models
Only)
(Figure
2-6)
1.
Remove
bolt
(item
1,
Figure
2-6) from
spool support
shaft (9).
2.
Pull
off
washer
(2).
spring
(3),
collar
assembly
(4),
fiber
washer
(5) and hub (7) from
the
spool
support
shaft
(9).
NOTE
Ensure
that
the fiber
washer
(8)
is left
on
the
~

support
shaft (9).
I

Ensure that
the
inlet
guide
(10)
is
given
approximately
1/16
inch
of clearance
from the
drive
roll
gears
(1
&
7)
and
that the flat
side
of
the inlet
guide
(10)
is
facing

screw
(5).
8.
Loosen
securing
screw
(5)
and
pull
out
outlet
guide
(4).
Insert
proper
size
outlet
guide
(4) into drive
roll
assembly
and
secure
with
securing
screw
(5).
th
at
o
uti the
dr
ive
roll
gea
rs
at
guide
(4) clears
(1
&
7)
by
1/16
inch and that the flat
side
of the
i
outlet
guide
(4)
is
facing
screw
(9).
1.
Remove
the
spooi
retaining spring
(item
6,
Figure
2-6).
2. Slide the
spool
of wire
onto
the hub (7)
so
that
the
wire
will
pay
off
from
the
bottom of
the
spool
in
a
counter
clockwise
direction.
TB-057
361-5
Figure
2-6.
Installation
of
Welding
Wire
Spool
3.
Place
a
four inch
spool
of
welding
wire
Onto
the
spool
support
shaft
(9)
so
that the
wire
will
pay
off from the
bottom of the
spool
in
a
counterclockwise
direction.
4.
Install
fiber
washer
(5),
collar
assembly
(4),
and
spring
(3)
Onto
the
spool
support
shaft
(9).
5. Place
washer (2)
onto
bolt (1) and
turn bolt (1) into
spooi
support
shaft
(9)
until
a
significant
pressure
is felt.
6.
Place the hub (7) and
spool
retaining spring
(6) in
a
con
venient
place.
2-11.
INSTALLATION
OF WELDING
WIRE
EIGHT
INCH
& TWELVE INCH
SPOOL
(80A
Models
Only)
1. Slide
the
spool
of
wire
Onto
the
spindle
assembly
so
that
the
wire
will
pay
off
from the bottom of
the
spool
in
a
counterclockwise
direction.
2. Rotate
the
spool
until
the hole
in
the
Spool
aligns
with
the
pin
in the
spindle
assembly.
Slide
the
spool
Onto
the
spindle
assembly
until it
seats
against
the
back
flange
of
the
spindle.
3. For
eight
inch
spools only:
Slide
the
supplied
spring,
stored beside
the
spindle
assembly,
onto
the
spindle
assembly.
4.
Depress
the
two
spring
loaded
stops
on
the
retaining
ring
and slide
the
retaining
ring
onto
the
spindle.
When
retain
ing ring
is
in
position,
release
the
two
stops.
For 70A
Models
Only:
Rotate
the
adjustment
screw
(item
1,
Figure
2-61
only
until
a
slight drag
is felt
while
turning
spindle.
For 80A
Models
Only:
Rotate
the hex
nut,
located
on
the
end of the
spindle
support
shaft,
only
until
a
slight drag
is
felt
while
turning
spindle.
*Shjpped
With
Gun
Figure
2-5.
Wire
Guide
&
Drive
Roll Installation
TB-057
361-4
2-9.
EIGHT
INCH SPOOL
TYPE
WELDING
WIRE
IN-
2-12.
HUB
TENSION
ADJUSTMENT
STALLATION
(70A
Models
Only)
(Figure
2-6)
OMi
038
Page
3