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TROUBLESHOOTING & REPAIR
F-48 F-48
IDEALARC CV-400
FIGURE F.26 – CHOKE REMOVAL
GLASTIC
STIFFENERS
CHOKE
LEADS
TOP
"E" IRON
THRU-BOLTS
(4)
BOTTOM
"E" IRON
MAIN TRANSFORMER REMOVAL & REPLACEMENT (continued)
REMOVAL OF CHOKE AND TOP
IRON ASSEMBLY
1. Remove the three (two left and one right)
glastic stiffeners connecting the negative rec-
tifier plate and choke assembly to the main
transformer thru-bolts. See Figure F.26.
2. Remove the top choke lead from the negative
rectifier plate.
3. Remove the bottom choke lead from the neg-
ative output terminal.
4. Using the 9/16” deep well socket wrench,
remove the four thru-bolts that clamp the top
“E” iron and choke assembly to the bottom
“E” iron. NOTE: for easier reassembly, clean
the threads.
5. Using a hoist, carefully lift the choke and top
iron assembly out and clear of the trans-
former coils.
NOTE: The coils may be “stuck” to the top iron
and may require some careful prying to
dislodge them. Depending upon which
coil(s) are to be replaced, it may be
advantageous to remove some of the
“stuck” coils with the top iron.
6. The leads from the coils that are to be
removed and/or replaced must be discon-
nected. See the Wiring Diagram.
When aluminum leads are re-connected, apply a
thin layer of Dow Corning 340 Heat Sink
Compound (Lincoln E1868) to mating surfaces.