Teardown, Cleaning, and Reassembly of the Miscellaneous Parts of the Olympus BH-2 Microscope Frames Revision 1 Page 38 of 45
Once the threaded retaining ring has been loosened
with the spanner tool, continue to unscrew the ring by
hand until it disengages from the threads of the frame
of the Light Exit Assembly (see Figure 161).
Figure 161 – Unscrew and remove threaded retaining ring
Using a suitable lens suction tool (item 9 of Appendix
1), carefully lift and remove the glass field-exit lens from
the frame of the Light Exit Assembly (see Figure 162).
Figure 162 – Lift and remove the glass field-exit lens
Use a lens duster bulb (item 11 of Appendix 1) to
remove as much loose dust and debris as possible from
the glass field-exit lens (see Figure 163).
Figure 163 – Blow loose dust from the glass lens
Use a suitable lens-cleaning solution and lint-free tissue
(items 4 and 5 of Appendix 1) to carefully clean the
glass field-exit lens (see Figure 164).
Figure 164 – Clean both sides of the field-exit lens
Using a suitable lens suction tool (item 9 of Appendix
1), carefully place the glass field-exit lens back into the
recess in the frame of the Light Exit Assembly (see
Figure 165).
Figure 165 – Place field-exit lens back into the recess
Carefully engage the threaded retaining ring with the
threads in the frame of the Light-Exit Assembly and
tighten it until it is finger tight, being careful not to
smudge the glass lens (see Figure 166).
Figure 166 – Engage the threaded retaining ring
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