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TROUBLESHOOTING & REPAIR
F-83 F-83
RANGER 305D
WARNING
OUTPUT RECTIFIER BRIDGE AND CHOKE REMOVALANDREPLACEMENT
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 elec-
trical 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 troubleshoot-
ing assistance before you proceed. Call 1-888-935-3877.
DESCRIPTION
The following procedure will aid the technician in removing and replacing the output rectifier
bridge and the choke in the Ranger 305D.
MATERIALS NEEDED
Miscellaneous hand tools
Electrical joint compound (Dow Corning 340 - Lincoln T12837)