Output Rectifier Bridge Removal And Replacement Procedure - Lincoln Electric Cross Country 300 Service Manual

LINCOLN ELECTRIC
OUTPUT RECTIFIER BRIDGE 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 Output Rectifier Bridge.
MATERIALS NEEDED
1/2" Nutdriver
1/2" Open-End Wrench
7/16" Nutdriver
7/16" Open-End Wrench
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. Using a 1/2" nutdriver and a 1/2" open-end wrench, remove the bolt, nut, lock washer and two flat
washers securing leads B1-NEG and B4-NEG to the negative terminal of the rectifier bridge. See
Figure F.62. See Wiring Diagram.
5. Using a 1/2" nutdriver and a 1/2" open-end wrench, remove the bolt, nut, lock washer and two flat
washers securing leads B2-POS, B5-POS and POS-shunt to the positive terminal of the rectifier
bridge. See Figure F.62. See Wiring Diagram.
6. Using a 7/16" nutdriver and a 7/16" open-end wrench, remove the bolt, nut, lock washer and two
flat washers securing leads W1 and W6 to the top terminal of the rectifier bridge. See Figure F.62.
See Wiring Diagram.
7. Using a 7/16" nutdriver and a 7/16" open-end wrench, remove the bolt, nut, lock washer and two
flat washers securing leads W2 and W3 to the middle terminal of the rectifier bridge. See Figure
F.62. See Wiring Diagram.
8. Using a 7/16" nutdriver and a 7/16" open-end wrench, remove the bolt, nut, lock washer and two
flat washers securing leads W4 and W5 to the bottom terminal of the rectifier bridge. See Figure
F.62. See Wiring Diagram.
9. Using a 1/2" nutdriver, loosen the nut securing the top of the rectifier bridge to the power module
panel. See Figure F.63.
Cross Country™ 300 Service Manual
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