Lincoln Electric SHIELD-ARC SVM128-A Service Manual page 91

F-37
FIGURE F.14 – COMMUTATOR WRAP-AROUND REMOVAL
PROCEDURE
1. Turn the engine OFF.
2. Perform the Alternator Rotor Removal
procedure.
3. With the 1/2" wrench, remove the four nuts
and bolts holding the case top and doors
assembly to the welder frame. Carefully lift
up and remove the top and doors assembly.
4. With the 3/8" nut driver, remove the two
leads from the alternator brush holder
assembly. Note lead placement. Set brush
holder aside.
5. With the 1/2" wrench, remove the battery.
6. With the 3/8" wrench, remove the bottom
alternator cover.
7. With the slot head screwdriver, remove the
commutator wrap-around. See Figure F.14.
8. Disconnect the yellow and white wires at the
in-line connectors. See the Wiring Diagram
and Figure F.15.
9. Disconnect the two yellow leads. One is
located at the field bridge and the other at
the field fuse holder. Cut any necessary
cable ties. See Figure F.15.
TROUBLESHOOTING & REPAIR
ALTERNATOR STATOR REMOVAL AND
REPLACEMENT (continued)
SA-250
COMMUTATOR
WRAP-AROUND
ALTERNATOR
BRUSH HOLDER
ASSEMBLY
(REMOVED)
10. Remove the tape and using the 3/8"
wrench and slot head screw driver, discon-
nect the black auxiliary power lead from
the current transformer. Cut any neces-
sary cable ties. See the Wiring Diagram
and Figure F.15.
11. Remove the red auxiliary power lead from
the CB4 circuit breaker. See the Wiring
Diagram.
12. Remove the white auxiliary power lead
from the 115VAC receptacle. Cut any nec-
essary cable ties.
NOTE: The CB1 circuit breaker may have to
be removed to access the terminal for the white
lead.
13. Remove the red lead from the negative ter-
minal of the field rectifier bridge.
Figure F.16.
14. Remove the black lead from the positive
terminal of the field rectifier bridge. See
Figure F.16.
F-37
See