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TROUBLESHOOTING & REPAIR
F-55 F-55
RANGER 8
WARNING
OUTPUT RECTIFIER BRIDGE REMOVAL
AND REPLACEMENT
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 manu-
al.
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 trou-
bleshooting assistance before you proceed. Call 1-800-833-9353 (WELD).
DESCRIPTION
The following procedure will aid the technician in removing the output rectifier bridge for
maintenance or replacement.
MATERIALS NEEDED
5/16” Nut driver
1/2” wrench
7/16” wrench
3/8” wrench
Slot head screw driver
Dow Corning 340
Wiring Diagram
This procedure takes approximately 60 minutes to perform.