
On mine the top & bottom are metal & the sides are fiberglass, There's a inner frame made of metal that the sides attach to. I had to use a Miller style connector since the Marquette plugs are a different size & not available any longer. I needed to replace the ground connection plug since the wrong connector had been used & it caused the connection to become sloppy & not fit correctly. I used a air nozzle to blow out the dust on the coils then wiped them down with some WD-40. Then all that was really needed was a wire brush to clean some light rust off of the frame & re-paint the frame.

Once the panels were all removed it was easy to sand & re-paint them. The wires to the plugs are fairly heavy & will stay in place once the front panel is removed, But I put a piece of tape & the amp# on each wire just to be sure! I did clean each solder connection with a wire brush & then applied heat shrink tubing to each connection, Mainly because I all ready had it on hand.

Each one of those plug connections will have a lock nut & washer on the back of the front panel, Loosen the lock nuts & then the front caps should twist off. The only moving part is the switch, Which I disassembled & cleaned the contacts with steel wool. Click to expand.It wasn't really that hard since most of the connections are already wired straight to the transformer & the plug connections are soldered to each lead.
