I’ve recently acquired a Calumet monorail 4x5 camera s/n 14288, which I think is a CC401 long focus model.
The rotating back is very stiff to move. With the locking level in the up position CCW movement from vertical to horizontal (portrait to landscape mode) is smooth once friction is overcome. Whereas CW movement is much stiffer.
There is no (noise or swalf/debris) indication of metal to metal erosion or damage.
I’d like to know how the back can be removed so I can see what is causing the stiffness of movement. Also what lubricant, if any, should be used to ensure a smooth and easy rotation?
An image of the in-situ rotatable back is attached.
Regards
Tony
Attachment 135364
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