Lincoln Electric K3269-1, Руководство оператора

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MAINTENANCE
D-4
4. Obtain a new replacement gun tube (if need-
ed). Remove locking nut from old gun tube and
install onto new gun tube. Nut should be fully
threaded finger-tight against the insulating
tube.
5. Slide gun tube’s external threads through gun
tube mounting plate and screw the gun tube by
hand into the cable connector until the nut pulls
the mounting plate snug against the connector.
6. Tighten the nut and mounting plate to the con-
nector with Torque Wrench 10 to 12 ft.-lbs.
7. Reassemble gun. Be careful not to pinch any
leads between gun handle halves.
WIRE DRIvE ASSEMBLY REMOvAL AND
INSTALLATION
1. There are no serviceable or maintainable parts
inside of the wire drive.
2. Remove liner assembly (See Maintenance
Section figures D.2 and D.3).
3. Remove left side of handle.
4. Disconnect black and red leads from drive
motor. Use care to prevent damage to motor’s
fast-on electrical tabs.
5. Slide wire drive out of right handle half.
6. When reinstalling wire drive, note the proper
motor lead connection in the figure. Reconnect
red motor lead to positive (+) terminal, marked
with red dot at arrow. Reconnect black lead to
other motor terminal. (See figure D.11)
FIGURE D.11
7. Reassemble gun. Be careful not to pinch any
leads between gun handle halves.
2. Remove liner assembly. (See Maintenance
Section)
3. Remove gun tube assembly. (See Maintenance
Section)
4. Remove wire drive assembly. (See Maintenance
Section)
5. Disconnect trigger. Use adjustable pliers to
remove cable strain relief from right handle half.
(See figure D.13)
FIGURE D.13
6. Pull damaged cable out of the right handle half.
The cable connector will fit through the strain relief
opening. Mark the new cable at a point 4.750 to
4.813 inches from the end of the cable connector.
(See figure D.14)
FIGURE D.14
7. Place the strain relief onto the new cable at the
mark as shown in figure D.15.
TRIGGER ASSEMBLY REPLACEMENT
1. There are no serviceable or maintainable parts
inside of the trigger.
2. Remove spool cover and left side of handle.
3. Slide trigger out of right handle half. Disconnect
both white leads from trigger. Use care to pre-
vent damage to electrical leads and the termi-
nals. (See Figure D.12)
FIGURE D.12
4. Connect both white leads to the new trigger.
Either lead may be connected to either trigger
pin (non-polarized connections).
5. Slide new trigger into place and reassemble the
gun. Be careful not to pinch any leads between
gun handle halves.
WELDING CABLE ASSEMBLY
REPLACEMENT
1. Generally, there are no serviceable or maintain-
able parts, except for both o-rings on the
machine’s power and gas connector; these
seals may be replaced. However, there are
options:
• Damage to the four #22 AWG control leads at
the gun cable’s welding machine end (P6 plug)
may be repairable without
removing or
replacing the entire gun cable. The leads
can be spliced and soldered back togeth-
er, and then reinsulated with heat-shrink
tubing. See Table D.1 in Maintenance
Section for a description of the connec-
tions.
• Otherwise, the damaged gun cable may
be replaced.
MAINTENANCE
D-5
White Leads
Consumable
parts
Periodic
replacement
parts
Tapered contact tip 0.030(0.8mm) S28172-7
Tapered contact tip 0.035(0.9mm) S28172-1
Gas diffuser (S28722)
Gas nozzle (S28728-1)
Gun tube assembly (S28729-1)
Drive roll assembly (S26236-2)
Liner assembly (S26612)
KP2744-030T
KP2744-035T
KP3076-1
KP3075-1-50F
KP3325-1
KP2529-2
KP2632-1
10-pack
10-pack
1-piece
1-piece
1-piece
1-piece
1-piece
TABLE D.2
Mark for strain relief
“+” Terminal
Red Dot
Black Lead
FIGURE D.15
8. Install the new gun cable. Pass the cable connec-
tor through the opening in the right handle, seat
the strain relief in place, and then check to insure
the cable is not kinked between strain relief and
connector. Reassemble gun by reversing steps 2
through 5.
CORRECTING WIRE SHAvING ISSUES
1. If the inlet of the liner assembly is shaving the alu-
minum wire (the wire is usually peeled off in curled
chips) during feeding, the wire feed centerlines of
the wire drive and the liner itself may be mis-
aligned.
• This misalignment may occur whenever the gun
tube, wire drive, or welding cable assemblies are
replaced.
• A limited amount of adjustment is available at the
gun tube mounting to possibly eliminate the shav-
ing problem.
2. Visually check if wire is centered in the liner’s inlet
opening. Feed wire through the spool gun and note
which side the shaving seems to occur.
3. Remove left side of handle. See Figure D.10 Gun
Tube Replacement. Slightly loosen gun tube’s nut
as shown.
4. Slide the gun tube in the mounting plate’s hole to
realign the wire and then retighten the nut as
shown. Reassemble the gun.
5. Repeat steps 2 thru 4 until shaving is eliminated. A
light accumulation of fine dust is also permissible
after feeding 1/4 of a spool during welding use.