Olympus BH2 Series Complete Teardown, Cleaning, And Reassembly - Page 17

Browse online or download pdf Complete Teardown, Cleaning, And Reassembly for Microscope Olympus BH2 Series. Olympus BH2 Series 40 pages. Phase contrast
Also for Olympus BH2 Series: Troubleshooting & Adjustment Manual (46 pages), Complete Teardown, Cleaning, And Reassembly (23 pages), Teardown, Cleaning And Reassembly (45 pages), Manual (6 pages), Installation Manual (9 pages)

Olympus BH2 Series Complete Teardown, Cleaning, And Reassembly
Once the brass gear-retaining ring securing the three
gears in the gear cluster has been removed, the three
loose gears may then be removed from the gear-
support base for cleaning (see
Figure 36 – The gear-retaining ring has been removed
Remove the top (right-most) drive gear from the gear-
support base first (see
Figure
Figure 37 – Remove the top (right-most) drive gear
Next, remove the middle drive gear from the gear-
support base (see
Figure
Figure 38 – Remove the middle drive gear
Finally, remove the bottom (left-most) drive gear from
the gear-support base (see
Complete Teardown, Cleaning, and Reassembly of the Olympus BH-2 Coaxial Focus Mechanism
Figure
36).
37).
38).
Figure
39).
Figure 39 – Remove the bottom (left-most) gear
Clean the old grease from the three gear holes in the
gear-support base and from the support pins and teeth
of all three drive gears. The gear-support base attaches
to the coarse-focus knob via three M2.6X5 pan-head
screws and three starred lock washers, as shown in the
rear view of the coarse-focus knob (see
Note: Removal of the gear-support base is not required for this
procedure but is included here for the sake of completeness.
Figure 40 – Rear view of the right-hand coarse-focus knob
To remove the gear-support base (with the attached
coarse-focus shaft) from the coarse-focus knob, use a
suitable JIS screwdriver to remove the three M2.6X5
pan-head screws and washers, and then separate the
gear-support base, with the attached coarse-focus
shaft, from the plastic coarse-focus knob. The brass
coarse-focus shaft threads into the back of the gear-
support base and is staked in place with adhesive.
These two components should not be separated unless
absolutely necessary. If it ever becomes necessary to
separate the brass coarse-focus shaft from the gear-
support base, be sure to first soften the adhesive by
thoroughly heating the bonded pieces before loosening
and removing the coarse-focus shaft. While gripping
the hollow coarse-focus shaft during removal from the
gear-support base, be careful to not scuff or flatten the
shaft.
Figure
40).
Revision 4
Page 17 of 40