Lincoln Electric SVM175-A CHOPPER MODULE REMOVALAND REPLACEMENT(continued) Replacement

TROUBLESHOOTING & REPAIR
F-89 F-89
RANGER 305D
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CHOPPER MODULE REMOVALAND REPLACEMENT(continued)
Replacement
1. Mount the heat sink to the brackets on the
vertical baffle with the three 3/8” screws.
Mount the plastic strip with the top two
screws.
2. Connect leads 23 and 25 at their in-line cou-
plers.
3. Using a 7/16” wrench, attach the heavy leads
and small leads as follows. Note placement
of leads and fasteners: screw,lock washer,
flat washer, small lead, heavy lead. Apply a
thin coating of electrical thermal joint com-
pound (Dow Corning 340 - Lincoln T12837)
to the mating surfaces (but not the threads).
Tighten the fasteners to between 50-60 in-
lbs.
4. Replace any cable ties cut at disassembly.
5. When procedures are complete, perform the
Case Cover Replacement procedure.
TERMINAL LEADS
B4 Heavy lead W11,small
lead 14
B5 HL W5, SL 13
B6 HL W8
B1 HL W6
B2 HL W4, SL 301
B3 HL W9, SL 302