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Main Transformer
1/2" Mounting
Bolts
FIGURE F.16 – MAIN TRANSFORMER LOCATION
MAIN TRANSFORMER REMOVAL AND REPLACEMENT PROCEDURE
(continued)
PROCEDURE
1. Using a 3/8” nutdriver, remove both sides of the
case wraparound cover.
2. Using a 5/16” nutdriver, remove the tool tray.
3. Locate the main transformer. See Figure F.16.
4. Label and disconnect leads X9, X10, 104B, &
104C. See Figure F.17.
5. Using a flathead screwdriver, Label and discon-
nect lead H1B and other associated lead con-
nected to the same terminal. These leads are
connected to the ON/OFF switch. See Figure
F.17.
6. Using a 7/16” nutdriver, Label and disconnect
leads X8, X7, X6, X5, X4, X3, & X2 from the
switch assembly. Note washer position upon
removal. See Figure F.18.
7. Using a 1/2” nutdriver, label and remove lead
X1 from the output diode bridge rectifier.
8. Using a 5/16” Nutdriver, open the rear access
panel. See Figure F.20.
9. Disconnect lead 118 from the rear access
panel. See Figure F.21.
10. Feed lead 118 toward the inside of the
machine.
11. Cut any necessary cable ties.
12. Remove any necessary wiring harnesses.
13. Disconnect lead 121. See Figure F.19.
14. Using a 1/2” nutdriver, remove the four main
transformer mounting bolts and associated
washers. See Figure F.16.
TROUBLESHOOTING AND REPAIR
F-42 F-42
Power MIG® 215XT
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