Choke Assembly Removal And Replacement Procedure - Lincoln Electric Tomahawk 1500 Service Manual

LINCOLN ELECTRIC

CHOKE ASSEMBLY REMOVAL AND REPLACEMENT PROCEDURE

Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized
repairs performed on this equipment may result in danger to the technician or machine operator and will
invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety
notes and precautions detailed throughout this manual. If for any reason you do not understand the test
procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department
for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This procedure will aid the technician in the removal and replacement of the Choke Assembly.
MATERIALS NEEDED
Torx Nutdriver (Size T-20)
3/8" Nutdriver
Wiring Diagram
REMOVAL PROCEDURE
1. Remove the input power from the Tomahawk 1500.
2. Perform the Case Cover Removal And Capacitor Discharge Procedure.
3. Label and disconnect leads 413 and 414 from the quick-connect terminals. See Wiring Diagram.
4. Using a Torx nutdriver (size T-20), remove the two screws, lock washers and flat washers securing
the leads to terminals IND1 and IND2 of the buck / boost board. Label and disconnect the leads
from terminals IND1 and IND2 of the buck / boost board. See
Diagram.
5. Using a Torx nutdriver (size T-20), remove the two screws, lock washers and flat washers securing
the leads to terminals B7 and B8 of the output board. Label and disconnect the leads from
terminals B7 and B8 of the output board. See
6. Using a 3/8" nutdriver, remove the four screws securing the choke assembly to the machine. See
Figure F.52.
7. Clear any leads necessary for removal and the choke assembly can now be removed and replaced.
REPLACEMENT PROCEDURE
1. Carefully position the new choke assembly into the
2. Using a 3/8" nutdriver, attach the four screws securing the choke assembly to the machine.
3. Using a Torx nutdriver (size T-20), connect the two screws, lock washers and flat washers securing
the previously disconnected leads to terminals B7 and B8 of the output board. See Wiring Diagram.
Torque to 11 – 13 in/lbs.
Tomahawk® 1500 Service Manual
Figures F.48
Figures F.50 and F.51. See Wiring Diagram.
machine.
and F.49. See Wiring
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