Gun Handle Disassembly - Lincoln Electric POWER MIG SVM170-A Service Manual

D-3
TABLE D.1
Replace Size
ment
Stencilled on
Número de Tamaño Grabado
Line
End of liner
Diámetro de Parte de la en el extremo del
Diameter of
Part
Bushing
Electrodos Utilizados Electrode Used Guía Cilindro de la Guía
Number
.025-.030" Steel KP1934-2 .030 (0.8 mm)
(0.6-0.8 mm)
.035-.045" Steel KP1934-1 .045 (1.2 mm)
(0.9-1.2 mm)
3/64" Aluminum KP1955-1 3/64" (1.2 mm)
(1.2 mm)
LINER REMOVAL, INSTALLATION
AND TRIMMING INSTRUCTIONS FOR
MAGNUM 250L
NOTE: The variation in cable lengths prevents
the
interchangeability of liners between guns. Once
a liner
has been cut for a particular gun, it should not be
installed in another gun unless it can meet the
liner
cutoff length requirement. Liners are shipped
with the
jacket of the liner extended the proper amount.
1. Remove the gas nozzle and nozzle insula-
tor, if used, to locate the set screw in the gas
diffuser which is used to hold the old liner in
place. Loosen the set screw with a 5/64"
(2.0 mm) Allen wrench.
2. Remove the gas diffuser from the gun tube.
3. Lay the gun and cable out straight on a flat
surface. Loosen the set screw located in the
brass connector at the feeder end of the
cable and pull the liner out of the cable.
4. Insert a new untrimmed liner into the con-
nector end of the cable. Be sure the liner
bushing is stencilled appropriately for the
wire size being used.
Note: For liners KP1950-7,
KP1955-1 and KP1599-2
Before fully seating the liner bushing, it will be
necessary to trim the liner's inner tube flush with
the liner bushing using a sharp blade. After trim-
ming, remove any burrs from inner tube and
insure that the opening is fully open.
5. Fully seat the liner bushing into the connec-
tor. tighten the set screw on the brass cable
connector. The gas diffuser, at this time,
should not be installed onto the end of the
gun tube.
MAINTENANCE
6.
Adjustable
No. de Parte
nozzle Gas
Fixed Nozzle No. de Parte del del Difusor de
Diffuser
Gas Diffuser
Difusor de Gas Gas de la
7.
Part No.
Part No. (and
de la Tobera Fija Tobera ajustable
(and
stencil)
Stencil)
(grabado) (grabado)
KP2026-3 KP2026-2
8.
KP2026-3 KP2026-1B1
KP2026-3 KP2026-1B1
This
Overtightening will split or collapse the liner and cause
poor wire feeding.
------------------------------------------------------------

GUN HANDLE DISASSEMBLY

The internal parts of the gun handle may be inspected or
serviced if necessary.
The gun handle consists of two halves that are held together
with a collar on each end. To open up the handle, turn the
collars approximately 60 degrees counterclockwise (the same
direction as removing a right hand thread) until the collar
reaches a stop. Then pull the collar off the gun handle. If the
collars are difficult to turn, position the gun handle against a
corner, place a screwdriver against the tab on the collar and
give the screwdriver a sharp blow to turn the collar past an
internal locking rib.
KP1950-8,
POWER MIG 255C
With the gas diffuser still removed from the gun
tube, be sure the cable is straight, and then trim
the liner to the length shown in Figure D.1.
Remove any burrs from the end of the liner.
Screw the gas diffuser onto the end of the gun
tube and securely tighten. Be sure the gas diffuser
is correct for the liner being used. (See table and
diffuser stencil.)
Tighten the set screw in the side of the gas diffuser
against the cable liner using a 5/64" (2.0 mm) Allen
wrench.
FIGURE D.1
TORNILLO DE FIJACION
SET SCREW
BRASS CABLE CONNECTOR
CONECTOR DE CABLE DE COBRE
TORNILLO DE FIJACION
SET SCREW
DIFUSOR DE GAS
GAS DIFFUSER
AISLADOR DE TOBERA
NOZZLE INSULATOR (IF USED)
(SI SE UTILIZA)
TOBERA DE GAS GAS NOZZLE
WARNING
screw should only
counterclockwise
D-3
1-1/4"
(31.8mm)
1-1/4 (31,8 mm)
LONGITUD DE
LINER TRIM
CORTE
LENGTH
be gently tightened.