3/16” Allen Bolt Location; Nylon Mounting Pin - Lincoln Electric INVERTEC V350-PRO Service Manual

F-61
MAIN SWITCH BOARD REMOVAL & REPLACEMENT (continued)
9. Using a 3/16" allen wrench remove four allen
bolts and washers as shown in Figure F.23.
At this point, the board is ready for removal.
Carefully remove the board from the 4 nylon
mounting pins. Note: Depress the retaining
pins on the sides of the nylon mounts to
release the board. See Figure F.24.
10. Carefully maneuver the board out of the
machine.
11. Apply a thin coat of Penetrox A-13 to the
IGBT heatsinks on the back of the new
switch boards mating surfaces. Note: Keep
compound away from the mounting holes.
12. Mount the new board on the nylon m o u n t -
ing pins.
TROUBLESHOOTING & REPAIR
FIGURE F.23. – 3/16" ALLEN BOLT LOCATION
- +
3/16" ALLEN BOLTS
- +
FIGURE F.24. – NYLON MOUNTING PIN
DEPRESS
LOCKING TAB ON
MOUNTING PIN
V350-PRO
- +
- +
13. Replace the four allen bolts and washers
previously removed.
14. Replace the eight capacitor terminal nuts,
washers, and necessary leads previously
removed.
15. Reconnect the three harness plugs previous-
ly removed.
16. Reconnect the nine leads (#201-#209) that
were previously removed.
17. Pre-torque all screws to 25 inch lbs. before
tightening to 44 inch lbs.
18. Replace the case wraparound cover.
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