Weld Mode Selector Switch Removal And Replacement Procedure - Lincoln Electric Cross Country 300 Service Manual

LINCOLN ELECTRIC
WELD MODE SELECTOR SWITCH 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 Weld Mode Selector Switch.
MATERIALS NEEDED
Wiring Diagram
REMOVAL PROCEDURE
1. Turn off the engine on the Cross Country 300 machine.
2. Perform the Case Cover Removal Procedure.
3. Perform the Capacitor Discharge Procedure.
4. Disconnect the lead from the negative battery terminal. See Wiring Diagram.
5. Carefully depress the tabs at the top and bottom of the of the rear side of the switch. See Figure
F.51.
6. Carefully maneuver the switch thru the front of the control panel.
7. Label and disconnect leads 214, 217, 222A, 220 and 218 from terminals 1, 4, 2, 3, 6 and 5 of the
switch. See Figure F.52. See Wiring Diagram.
8. Route wires back thru the control panel and remove the switch backing plate.
9. The switch can now be removed and replaced.
REPLACEMENT PROCEDURE
1. Carefully position new engine control unit into the machine.
2. Carefully position switch backing plate over the wiring for the switch and route the leads thru the
front panel of the machine.
3. Connect leads 214, 217, 222A, 220 and 218 to terminals 1, 4, 2, 3, 6 and 5 of the switch. See Wiring
Diagram.
4. Carefully press the switch into position on the control panel. The tabs on the switch should lock the
switch in place on the switch backing plate.
5. Connect the lead to the negative battery terminal.
6. Perform the Case Cover Replacement Procedure.
7. Perform the Retest After Repair Procedure.
Cross Country™ 300 Service Manual
96