Lincoln Electric SVM120-A Welder User Manual


 
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TROUBLESHOOTING & REPAIR
F-58 F-58
RANGER 10-LX
OUTPUT RECTIFIER BRIDGE REMOVAL
AND REPLACEMENT (continued)
FIGURE F.14 - OUTPUT RECTIFIER CONNECTIONS
PROCEDURE
1. Perform this procedure with the engine OFF.
2. With the 5/16” and 3/8” nut drivers, remove
the sheet metal screws from the left and right
case sides.
3. Carefully remove the left and right case
sides. Note that the output rectifier is di-
vided into two parts. The positive portion is
located on the lower right side and the neg-
ative portion on the lower left side of the
machine.
For the remaining steps refer to FIgure F.14.
4. With the 1/2” wrench, remove the diode pig-
tails and heavy leads from the terminal studs.
Note lead and washer placement: nut, split
washer, flat washer, leads. Label leads for
reassembly. See wiring diagram.
5. With the 1/2” wrench, remove the two heavy
leads and one small lead from the rectifier
heat sink plate. (Note that the small lead is
always on top for reassembly.)
6. With the 7/16” wrench, remove the nut and
washers holding the top stud assembly to the
rectifier mounting bolts.
7. With the 7/16” wrench, remove the nuts, lock
washers, and flat washers from the two top
mounting bolts. (Note insulator place-
ment.)
8. With the 3/8” nut driver, remove the two bot-
tom mounting sheet metal screws. (Note
insulator placement - upon reassembly the
heat sink must be electrically insulated from
the frame of the Ranger 10-LX.)
Left Side (–) Right Side (+)