Teardown, Cleaning, and Reassembly of the Miscellaneous Parts of the Olympus BH-2 Microscope Frames Revision 1 Page 16 of 45
Unscrew and remove the viewing head locking
thumbscrew from the tapped hole in the BHSU/BHTU
pillar arm (see Figure 39).
Figure 39 – Unscrew and remove the locking thumbscrew
Clean the Locking Screw (BHSU/BHTU)
Use an acid brush and a suitable solvent to clean any
grease or contaminants from the threads of the locking
thumbscrew (see Figure 40).
Figure 40 – Clean the threads of the locking thumbscrew
Clean Tapped Threads for Locking Screw (BHSU/BHTU)
Use a cotton swab and a suitable solvent (acetone) to
clean any grease or contaminants from the threads of
the tapped hole in the pillar arm (see Figure 41).
Figure 41 – Clean the threads of the tapped hole
Reinstall the Locking Thumbscrew (BHSU/BHTU)
Apply a light coating of grease to the threads of the
locking thumbscrew (see Figure 42). Wipe away any
excess grease.
Figure 42 – Apply grease to threads of the thumbscrew
Carefully screw the freshly greased locking screw into
the tapped hole in the BHSU/BHTU pillar arm (see
Figure 43) until the ring groove in the end of the locking
thumbscrew is visible in the dovetail recess for the
viewing head (see Figure 44). Thoroughly remove any
visible grease squeeze-out.
Figure 43 – Screw the thumbscrew into the tapped hole
Figure 44 – The ring groove for the retaining e-clip
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