Inspecting The Revolving Turret For Wear Of The Mechanical Detents; Figure 43 - Revolving Turret With Severely Worn Mechanical Detents; Figure 44 - Close-Up View Of A Worn Mechanical Detent Notch - Olympus BH-NRE Manual

Appendix 1

Inspecting the Revolving Turret for Wear of the Mechanical Detents

The photos below show the revolving turret from a BH2-5RE modular revolving nosepiece which has severely worn
mechanical detents, as a result of extensive use and a poor service history. The revolving turret is made of brass (a soft
metal), with a hard, corrosion/wear-resistant layer of dull, silver-colored plating on the exposed surface. When the hard
plating in the area of the mechanical detents begin to wear away, as a result of severe use without routine cleaning and
re-greasing of the detents, the underlying brass will then be exposed. This exposed brass will then wear very quickly
with continued usage, soon rendering the nosepiece assembly unusable. Figure 43 shows an example of a revolving
turret with severe wear. Exposed brass is visible in the areas of the mechanical detents. Figure 44 shows a close-up of
one of the mechanical detents, where the wear can clearly be seen.
Figure 43 – Revolving turret with severely worn mechanical detents
Figure 44 – Close-up view of a worn mechanical detent notch
Complete Teardown, Cleaning, and Reassembly of the Olympus BH-NRE Modular Revolving Nosepiece Page 16 of 17
Revision 3