Lincoln Electric Idealarc DC600 9773MSP Service Manual page 92

TROUBLESHOOTING & REPAIR
5. Remove the four thru bolts and
associated nuts and washers hold.
ing the SCR heat sink to the bridge
tie bars.
a. The main mounting bolts that
mount the SCR bridge assem-
bly to the frame rail may have
to be loosened to slide the
SCR Heat Sink out from under
the buss jumper strap.
b. When all four thru-bolts are
removed, the SCR Heat Sink
directly above or below will be
detached also.
SCR Heat Sink above or
below. To hold the Heat Sink in
place temporarily, insert one of
the thru-bolts and replace the
nut hand tight.
6. Install the replacement SCR Heat
Sink in reverse order of removal.
a. Apply a thin layer of Lincoln
Support the
E1868 (Dow Corning 340) heat
sink compound to all bolted
electrical connections on the
aluminum heat sinks.
IDEALARC DC-600
F-51