Originally Posted by
Steven Tribe
This is in good condition. Paint loss is endemic with aluminium bodied front and rear cells. The fact that the aperture ring has been removed means that something is seriously wrong with the iris mechanism (probably). This removal is not part of a usual clean and adjust servicing. Even is the iris has been removed or busted it is still of use as makeshift waterhouse stops could be used. Professional replacement/repair of the iris is both possible and expensive.
Some methods of loosening the cells are so extreme that I dare not mention them here where others read! However, the most reliable method I have used with big objectives is to attach two automobile oil filter wrenches to the barrel and the appropriate cell. Place on the floor and lock one wrench against the floor and apply torque on the cell with the other (anti-clockwise!). You have to make strips of cushioning/friction material to prevent metal to metal contact.
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