December 5, 2010
The FE Arm of the Nikon Fluophot is easily removed. This microscope was designed with interchangeable parts, put together with close fitting machined dovetails and centering bolts held in place with set screws. A very nice design, solid and easily assembled and disassembled for cleaning, maintenance and repair.
The process of removing the arm entails removal of the trinocular head, which uses one finger tightened set screw, easily loosened and lifted out of it's round dovetailed fitting. Next you remove the FE Arm mounting screw and slide the whole arm off the vertical holder at the rear of the scope. The whole process takes about 45 seconds.
At this time, I am able to remove and replace the arm and trinocular head, but have found no set screw to remove the nose turret. If anyone has any information on how to do this, I would love to hear from you. I do have the Nikon Fluophot Owners Manual, distributed by Nikon Instruments on request. It shows the process for removing the nose turret from the BD-Arm, in their example, there is a set screw to remove. Mine has no such screw and I have not found any other way to get it off. It does need cleaning in the space behind the nose turret, in the opening that passes light from the objective lenses to the trinocular head. Top and bottom openings are covered with some kind of glass or filters, and I can see dust that I would like to clean.
In the first and last images, you see a small center cover with two tool holes. I have removed this to look under it and it is full of tiny bearings with grease packing. I did not try and lift the nose turret off this mounting, for the obvious reasons. :o) All other visible Phillips Head screws, I have removed and found nothing under the covers to make me go further. The nose turret remains a mystery, and full of dust.
Below are a series of images from various angles of the arm, removed from the scope body;