Olympus BH2 Series Повний демонтаж, очищення та повторний монтаж - Сторінка 22
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Figure 60
shows the steel bearing balls with dried
grease after they have been removed from the
retaining-ring end of the pinion assembly.
Figure 60 – Bearing balls removed from retaining-ring end
Once the steel balls have been removed from the
retaining-ring end, and while still holding the pinion
assembly over the catch tray, carefully withdraw the
steel pinion from the brass pinion mount and remove
the 30 steel balls supporting the gear-end of the steel
pinion (see
Figure
61).
Figure 61 – The bearing balls removed from gear end
Clean and Reassemble the Pinion Assembly
Soak the steel balls in a suitable solvent (e.g., acetone)
to remove the old grease and any debris, and then
allow them to dry, or obtain 60 new 1/16" balls (item P1
of
Appendix
3) to replace them. Thoroughly clean the
old grease from the brass pinion mount, the steel
pinion, and from the slotted brass retaining ring. On a
clean, flat surface, stand the steel pinion on its end
(with the gear-end down) and apply a healthy ring of
grease around the perimeter of the upper face of the
gear (see
Figure
62).
Complete Teardown, Cleaning, and Reassembly of the Olympus BH-2 Coaxial Focus Mechanism
Figure 62 – Apply grease to upper face of the pinion gear
Use a fine-point tweezers or a toothpick with a dab of
grease on the end to pick up and place 30 of the steel
balls in the ring of grease on the gear, leaving as little
space as possible between the adjacent balls (see
63).
Figure 63 – Bearing balls on the top face of the gear
Carefully lower the brass pinion mount over the steel
pinion, with its threaded end facing downward, until it
contacts the ring of steel balls on the gear, trapping the
balls in place (see
Figure
pinion mount fully seated against the ring of steel balls
as you proceed with the reassembly, so that the balls do
not come out of place.
Figure 64 – Lower brass pinion mount over steel pinion
64). Be sure to keep the brass
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Figure