Olympus BH2-5RE Vollständige Demontage, Reinigung und Wiedermontage - Seite 16
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Problems with the Turret Assembly
A few problems with the turret assembly can
sometimes be found in the reassembled nosepiece. The
first will be seen if one or more of the mechanical
detents are excessively worn. This will cause radial float
of the revolving turret in one or more of the objective
positions, and these objectives will have trouble
returning to and maintaining their proper index
position.
This can make it difficult to utilize some
illumination types, such as phase contrast, since the
phase annuli will not be able to hold an acceptable
alignment due to variations in objective indexing.
The other problem that may be seen is caused by
overall float of the revolving turret, relative to the
center point of the stationary base. If there is excess
play in the center-pivot ball, such that the turret is not
held in the exact center point, the whole turret may
move slightly, resulting in poor objective centering and
all that that entails. This problem may be encountered
if the threaded retaining ring has not been properly
snugged down, or if the center pivot-adjustment screw
has not been properly adjusted to remove the play in
the center-pivot mechanism.
Original Olympus Documentation
Scanned versions of the following PDF service manuals
are available for download at various microscope-
related hobbyist sites on the internet. These can also
be found by searching for the titles in an internet search
engine, such as Google.
Olympus Research Microscopes Series BH2 (BHS) Repair Manual
Complete Teardown, Cleaning, and Reassembly of the Olympus BH2-5RE Modular Revolving Nosepiece
Olympus Research Microscope BH2 Repair Manual
How to Contact the Author
Please feel free to direct any questions or comments
regarding this document (or BH-2 microscopes in
general) to the author at the email address included on
the cover page of this document.
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