johnf04
Well-known
I posted this in the much lamented Classic Camera Repair Forum in 2003, and I just noticed that the archive here doesn't cover that year. The post assumes you have removed the top and bottom covers.
"You will need to pull the mirror box to replace the foam seal behind it - to do this, remove the prism, and the casting beneath that it rests on. Remove the aperture lever (3 screws - you will see them when you take off the bottom plate). Undo the screws holding the front plate, and ease the front and mirror box forward, taking care that the meter needle clears the top. When you have the front out, unsolder the 3 wires above the flash socket - note where they go. At the back of the mirror box you will see 2 black wires leading to the CDS resistor. The resistor is held in by the strip of foam on top. Remove the foam, lift out the resistor, and the neutral density filter that sits in front of it. The front is now free, and you can flush out and lube the winding and shutter systems. I didn't have to touch the meter on my camera, but as long as you keep notes of where any wires go, and of the position of the rack and gear behind the shutter speed knob, you'll do ok. Replace all the foam you can see on the mirror box, except the piece above the resistor. When you refit the front, have the wind lever attached. I found that the mirror box seats itself nicely if you wind the camera while you push the box home. Refit the resistor after you replace the mirror box, don't forget the filter, which goes in front of the resistor. Then replace the foam which sits above the resistor."
"You will need to pull the mirror box to replace the foam seal behind it - to do this, remove the prism, and the casting beneath that it rests on. Remove the aperture lever (3 screws - you will see them when you take off the bottom plate). Undo the screws holding the front plate, and ease the front and mirror box forward, taking care that the meter needle clears the top. When you have the front out, unsolder the 3 wires above the flash socket - note where they go. At the back of the mirror box you will see 2 black wires leading to the CDS resistor. The resistor is held in by the strip of foam on top. Remove the foam, lift out the resistor, and the neutral density filter that sits in front of it. The front is now free, and you can flush out and lube the winding and shutter systems. I didn't have to touch the meter on my camera, but as long as you keep notes of where any wires go, and of the position of the rack and gear behind the shutter speed knob, you'll do ok. Replace all the foam you can see on the mirror box, except the piece above the resistor. When you refit the front, have the wind lever attached. I found that the mirror box seats itself nicely if you wind the camera while you push the box home. Refit the resistor after you replace the mirror box, don't forget the filter, which goes in front of the resistor. Then replace the foam which sits above the resistor."