Lincoln Electric IDEALARC CV-300 Service Manual page 80

F-41
SCR REMOVAL AND REPLACEMENT (CONTINUED)
PROCEDURE FOR THE 5/8
INCH WIDE SPRING
1. Place a piece of sleeving around
each bolt.
2. Insert bolts thru the leaf spring. The
leaf spring is flat so the orientation
of the leaf spring does not matter.
3. Place the steel pressure pad in the
housing with the 1/8 inch wide
standoff facing up. See Figure F.23.
STEEL PRESSURE PAD
HOUSING
Figure F.23 - Housing and Pressure
Pad for 5/8" Wide leaf spring.
4. Insert bolts and leaf spring into
plastic housing being sure that the
steel pressure pad remains in posi-
tion. Pressing on the bolt heads
should produce a rocking action of
the spring in it's housing.
5. Insert clamp assembly thru heat
sinks. Install nuts. Tighten clamp
nuts equally on bolts until finger
tight. Be sure that the leaf spring is
not cocked in the housing.
Figure F.24. Heat sinks may not be
exactly as pictured.
6. Re-inspect the SCR for proper seat-
ing.
TROUBLESHOOTING & REPAIR
HEAT SINK
5/8"
HEX NUT
Figure F.24 - Clamp Assembly.
See
IDEALARC CV-300
STEEL
PRESSURE
PAD
LEAF
SPRING
S.C.R.
HOUSING
HEAT SINK
PLAIN WASHER
F-41
SLEEVING
1/4-28 OR 1/4-20
CAP SCREW