20
Systematics, Inc. West Chester, PA. 19380
3/4"
LINER
STICKOUT
GAS SEAL
SET SCREW
3/4"
CONNECTOR
PLUG
The MIG torch liner provided with
the PBE180 is designed for wire
diameters from .035 thru .045. If
smaller wire diameters are to be fed
and or there is a problem (i.e.
clog, kink, etc.), a liner change is
required.
Following is a step by step guide
to aid in liner removal and instal-
lation.
NOTE
When removing the welding wire
from the MIG torch, care
should be taken to avoid the
wire from uncoiling from the
wire spool.
REMOVING OLD LINER
1. Remove torch assembly from the
welding machine.
2. Place torch assembly on a flat
surface, making sure torch is
laying straight as possible.
3. Remove nozzle, bushing insula-
tor, contact tip and gas dif-
fuser from the front end of the
torch assembly.
4. Loosen set screw located on the
connector end of the torch as-
sembly, see FIG. 22.
5. Grip the liner and gas seal
firmly, then pull. The liner
should easily slide from torch
assembly.
INSTALLING NEW LINER
1. Remove the new liner from the
package.
2. Uncoil liner and lay the liner
parallel next to the MIG torch
assembly.
3. Adjust the liner stickout length
to 3/4" as shown in FIG. 21.
M.I.G. TORCH LINER INSTALLATION
(steel only)
4. Install the new liner into the
MIG torch assembly, until gas
seal seats flush with the con-
nector plug.
5. Tighten set screw. (Do not over-
tighten), refer to FIG. 22.
6. Following the diagram in FIG.
23, measure out 1 1/4"+ from the
neck assembly and cut off the
protruding liner.
7. Debur the cutoff end of the liner
to insure unobstructed wire feed.
8. Install the gas diffuser and
contact tip of proper wire size,
tighten with a wrench.
9. Install the bushing insulator
onto the gas diffuser. Spray the
"O" rings with anti-spatter com-
pound for lubrication.
10. Install the TWIST-ON adjustable
nozzle and twist the nozzle
during the installation. Turn to
Page 9 for correct nozzle ad-
justment.
FIG. 21. - LINER STICKOUT
FIG. 22. - TORCH CONNECTOR END
FIG. 23. - TORCH FRONT END
1 1/4+"
PROTRUDING
LINER
NECK
ASSEMBLY
